java-尝试写了一个 JDBC 操作 SQLServer 的工具类，但是好像有问题，求大神帮忙指正—

尝试写了一个 JDBC 操作 SQLServer 的工具类，但是好像有问题，求大神帮忙指正

java新人，尝试写了一个 JDBC 操作 SQLServer 的工具类，但是好像有问题，调用 insert 指令没问题，而 select 指令出现如下报错：
com.microsoft.sqlserver.jdbc.SQLServerException: ')' 附近有语法错误。
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(SQLServerException.java:216)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.getNextResult(SQLServerStatement.java:1515)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.doExecuteStatement(SQLServerStatement.java:792)
at com.microsoft.sqlserver.jdbc.SQLServerStatement$StmtExecCmd.doExecute(SQLServerStatement.java:689)
at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:5696)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:1715)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeCommand(SQLServerStatement.java:180)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeStatement(SQLServerStatement.java:155)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeQuery(SQLServerStatement.java:616)
at com.javaee.servletxm.comm.MSSQLJDBC.select(MSSQLJDBC.java:160)
at com.javaee.servletxm.comm.MSSQLJDBC.select(MSSQLJDBC.java:195)
at com.javaee.servletxm.comm.MSSQLJDBC.selectFirstValue(MSSQLJDBC.java:172)
at com.javaee.servletxm.comm.MSSQLJDBC.getPageNumber(MSSQLJDBC.java:221)
at com.javaee.servletxm.comm.MSSQLJDBC.selectByFY(MSSQLJDBC.java:259)
at com.javaee.servletxm.kqgl.KqManager.getAllKqxx(KqManager.java:38)
at com.javaee.servletxm.kqgl.Kqwh.doGet(Kqwh.java:47)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:879)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:617)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1760)
at java.lang.Thread.run(Thread.java:724)

这是具体的代码，求大神帮忙指正

package com.javaee.servletxm.comm;
/**

jdbc下 SQL Server 2005 数据库的封装类 */ import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.sql.CallableStatement; import java.sql.Connection; import java.sql.Date; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.ResultSetMetaData; import java.sql.SQLException; import java.sql.Statement; import java.sql.Timestamp; import java.text.SimpleDateFormat; import java.util.List; import java.util.Properties;

public class MSSQLJDBC {
// 配置文件名称
private String iniFileName = MSSQLJDBC.class.getClassLoader().getResource("/com/javaee/servletxm/comm").getPath()+ "mssql.properties";
// 连接数据库
private String driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
private String url = "jdbc:sqlserver://localhost;DatabaseName=jdms";
private String user = "sa";
private String password = "";

// 定义连接属性
private Connection connect = null;

// 与连接有关三个通道
private Statement stmt = null;
private PreparedStatement pstmt = null;
private CallableStatement cstmt = null;

public static final String stmtType = "stmt";
public static final String pstmtType = "pstmt";
public static final String cstmtType = "cstmt";

// 定义参数类型的静态常量值
public static final String varCharType = "varchar";
public static final String intType = "int";
public static final String doubleType = "decimal";
public static final String dateType = "datetime";
public static final String timeType = "timestamp";

// 定义全局的结果集
private ResultSet rs = null;

// 在构造方法中对属性进行初始化赋值操作
public MSSQLJDBC() {
    // 读取配置文件
    readIni();
    // 初始化连接
    initConnect();
}

// 可配置文件 .properties
// 读取配置文件
private void readIni() {
    File file = new File(iniFileName);
    if (!file.exists()) {
        // 创建一个文件
        try {
            file.createNewFile();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    // 判断文件是否有值
    if (file.length() == 0) {// 说明是一个空文件
        // 初始化值
        try {
            Properties p = new Properties();
            p.put("driver", driver);
            p.put("url", url);
            p.put("user", user);
            p.put("password", password);
            FileOutputStream fos = new FileOutputStream(file);
            p.store(fos, "配置文件信息");
            fos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    } else {// 如果有值
        // 将信息读取出来
        try {
            FileInputStream fis = new FileInputStream(file);
            Properties p = new Properties();
            p.load(fis);
            this.driver = p.getProperty("driver");
            this.url = p.getProperty("url");
            this.user = p.getProperty("user");
            this.password = p.getProperty("password");
            fis.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

// 建立连接
private void initConnect() {
    try {
        Class.forName(driver);
        this.connect = DriverManager.getConnection(url, user, password);
        this.connect.setAutoCommit(false);// 设置手动提交事务
        this.stmt = connect.createStatement();
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    } catch (SQLException e) {
        e.printStackTrace();
    }
}

/*/ 从tomcat缓冲池获取连接
private void initConnectFromDataSource() {
    try {
        InitialContext ic = new InitialContext();
        DataSource ds = (DataSource) ic.lookup("java:comp/env/jdbc/oracleds");
        this.connect = ds.getConnection();
        this.connect.setAutoCommit(false);
        this.stmt = connect.createStatement();
    } catch (NamingException e) {
        e.printStackTrace();
    } catch (SQLException e) {
        e.printStackTrace();
    }
}*/

// 需要调用者控制事务的两个方法
// 提交方法
private void commit() {
    try {
        this.connect.commit();
    } catch (SQLException e) {
        e.printStackTrace();
    }
}

// 回滚事务
private void rollBack() {
    try {
        this.connect.rollback();
    } catch (SQLException e) {
        e.printStackTrace();
    }
}

// 定义一组与操作有关的方法
// 使用普通通道执行的select
public ResultSet select(String sql) {
    ResultSet prs = null;
    if (stmt != null) {
        try {
            prs = stmt.executeQuery(sql);
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
    return prs;
}

// 根据传入的sql直接获取单一值
// 使用此方法的时候sql语句返回的单一的值
public String selectFirstValue(String sql, String type, List<String> csList) {
    String rstr = "";
    rs = select(sql, type, csList);// 确定此结果集只有一条记录
    if (rs != null) {// 说明结果集有值，且只有一条记录
        try {
            ResultSetMetaData rsmd = rs.getMetaData();
            if (rs.next()) { // 移动到第一条记录
                String p_type = rsmd.getColumnTypeName(1);
                rstr = getResultSetValue(rs, 1, p_type);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
    return rstr;
}

// 使用普通通道执行的select
/**
 * sql 参数 type 使用通道的类型 stmt pstmt cstmt List<String> csList 预编通道执行的参数队列
 * String 最少必须满足如下条件的字符串 数据类型 ,数据值 数据类型定义说明 字符串 数字（整数、小数） 日期（DATE、TIMESTAMP）
 */
public ResultSet select(String sql, String type, List<String> csList) {
    ResultSet prs = null;
    if (type.equals(stmtType)) {// 说明使用普通通道来执行
        prs = select(sql);
    } else if (type.equals(pstmtType)) {// 说明使用预编译通道来执行
        if (connect != null) {
            try {
                pstmt = connect.prepareStatement(sql);
                // 验证传入的参数和sql中的参数个数一致

                setPrepareStatement(pstmt, csList);// 将参数设置进当前的预编译通道

                prs = pstmt.executeQuery();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
    return prs;
}

// 获取 总页数
public int getPageNumber(String sql, String type, List<String> csList,
        int pageSize) {
    // 处理总页数
    int pageNumber = 0;

    // 第一步获取sql总记录数
    String psql = "select count(*) from (" + sql + ")";
    String result = selectFirstValue(psql, type, csList);
    int rows = 0;
    if (result != null && result.trim() != "") {
        rows = Integer.valueOf(result);
    }

    if (rows % pageSize == 0) {
        pageNumber = rows / pageSize;
    } else {
        pageNumber = rows / pageSize + 1;
    }
    return pageNumber;
}

/**
 * 自动添加分页查询方法
 * 
 * @param sql
 *            要执行的sql
 * @param type
 *            执行方式
 * @param csList
 *            参数列表
 * @param curPage
 *            当前页数
 * @param pageSize
 *            每页记录数 默认为10
 * @return
 */
public ResultSet selectByFY(String sql, String type, List<String> csList,
        int curPage, int pageSize) {
    ResultSet prs = null;

    // 处理 每页记录数
    if (pageSize <= 0) {
        pageSize = 10;// 默认页面10条记录
    }

    int pageNumber = getPageNumber(sql, type, csList, pageSize);

    // 处理当前页数
    if (curPage < 0) {
        curPage = 1;// 默认第一页
    }
    if (curPage > pageNumber) {
        curPage = pageNumber;
    }

    String psql = "select tmpaa.* from (select tmpa.*,(select (ROW_NUMBER() over (order by id))) as rn from ("
            + sql + ") tmpa where (select (ROW_NUMBER() over (order by id))) <= " + (curPage * pageSize)
            + ") tmpaa where tmpaa.rn >= " + ((curPage - 1) * pageSize + 1);
    prs = select(psql, type, csList);

    return prs;
}

// 将预编通道执行的参数队列按照指定规则设置进通道中
private void setPrepareStatement(PreparedStatement p, List<String> csList)
        throws Exception {
    if (csList != null && csList.size() > 0) {
        for (int i = 0; i < csList.size(); i++) {
            // 此处的str是数据类型 ,数据值
            // 解析出数据类型和数据值
            String[] s = csList.get(i).split(",");
            String sType = s[0];
            String sData = s[1];
            if (varCharType.equals(sType)) {
                p.setString(i + 1, sData);
            } else if (intType.equals(sType)) {
                p.setInt(i + 1, Integer.valueOf(sData));
            } else if(doubleType.equals(sType)){
                p.setDouble(i+1, Double.valueOf(sData));
            } else if (dateType.equals(sType)) {
                SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
                java.util.Date d = sdf.parse(sData);
                p.setDate(i + 1, new Date(d.getTime()));
            } else if (timeType.equals(sType)) {
                SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
                java.util.Date d = sdf.parse(sData);
                p.setTimestamp(i + 1, new Timestamp(d.getTime()));
            }
        }
    }
}

// 定义一个执行insert update delete的方法
public int iudSql(String sql) {
    int ri = -1;
    if (stmt != null) {
        try {
            ri = stmt.executeUpdate(sql);
            commit();
        } catch (SQLException e) {
            e.printStackTrace();
            rollBack();
        }
    }
    return ri;
}

public int iudSql(String sql, String type, List<String> csList) {
    int ri = -1;
    if (stmtType.equals(type)) {
        ri = iudSql(sql);
    } else if (pstmtType.equals(type)) {
        if (connect != null) {
            try {
                pstmt = connect.prepareStatement(sql);
                setPrepareStatement(pstmt, csList);
                ri = pstmt.executeUpdate();
                commit();
            } catch (Exception e) {
                e.printStackTrace();
                rollBack();
            }
        }
    }
    return ri;
}

/**
 * 编写一个通用的遍历ResultSet结果集的方法
 */
public void iteratorResultSet(ResultSet rs) {
    try {
        if (rs != null) {// 说明有值
            // ResultSetMetaData 此对象里封装了与结果集有关所有信息
            // 此结果有几列组成，每列的列名,每列的数据类型
            ResultSetMetaData rsmd = rs.getMetaData();
            // 得到结果集列数
            int columnCount = rsmd.getColumnCount();
            // 输出此结果集的所有列名
            for (int i = 1; i <= columnCount; i++) {
                System.out.print(rsmd.getColumnName(i) + "\t");
            }
            System.out.println("");
            // 遍历输出所有的数据
            while (rs.next()) {
                // 如何在获取rs中的数据?
                for (int i = 1; i <= columnCount; i++) {
                    String type = rsmd.getColumnTypeName(i);
                    System.out.print(getResultSetValue(rs, i, type) + "\t");
                }
                System.out.println("");
            }
        }
    } catch (SQLException e) {
        e.printStackTrace();
    }
}

// 从ResultSet中根据数据类型来得到数据值的方法
// 先处理常用的sqlserver的数据类型的对应
private String getResultSetValue(ResultSet rs, int index, String type) {
    String rstr = "";
    try {
        if (rs != null && !"".equals(type) && index > 0) {
            if ("char".equals(type.trim()) || "varchar".equals(type.trim())) {
                if (rs.getString(index) != null) {
                    rstr = rs.getString(index);
                }
            } else if ("int".equals(type.trim())) {
                    rstr = rs.getInt(index) + "";
            } else if ("decimal".equals(type.trim())) {
                    rstr = String.valueOf(rs.getDouble(index));
            } else if ("date".equals(type.trim())) {
                Date date = rs.getDate(index);
                if (date != null) {
                    rstr = new SimpleDateFormat("yyyy年MM月dd日").format(date);
                }
            } else if ("timestamp".equals(type.trim()) || "datetime".equals(type.trim())) {
                Timestamp tt = rs.getTimestamp(index);
                if (tt != null) {
                    rstr = new SimpleDateFormat("yyyy年MM月dd日 HH时mm分ss秒").format(tt);
                }
            }
        }
    } catch (SQLException e) {
        e.printStackTrace();
    }
    return rstr;
}

/*
//统一事务管理的批量sql的封装 
public boolean iudSql(List<String> sqlList){ 
    int ri = -1; 
    if(stmt!=null){ 
        try { 
            ri = stmt.executeUpdate(sql); 
            commit(); 
        } catch (SQLException e) { 
            e.printStackTrace(); 
            rollBack(); 
        } 
    } 
    return ri; 
}*/


// 关闭连接
public void close() {
    try {
        // 关闭所有的与数据库有关的对象
        if (rs != null) {
            rs.close();
            rs = null;
        }
        if (stmt != null) {
            stmt.close();
            stmt = null;
        }
        if (pstmt != null) {
            pstmt.close();
            pstmt = null;
        }
        if (cstmt != null) {
            cstmt.close();
            cstmt = null;
        }
        if (connect != null) {
            connect.close();
            connect = null;
        }
    } catch (SQLException e) {
        e.printStackTrace();
    }
}

}

发布于：2013.12.22 08:58

java sql jdbc

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: XKIND

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-_-！
查询语句有问题
每次执行sql前把sql语句打印出来，仔细排查下

发布于：2014.06.28 12:32

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: 小马哥_Mark

声望： 62

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java用ant.jar工具类执行sql脚本遇到问题: 最近在研究用工具类ant.jar执行sql脚本文件，一般对数据和字段的操作都无问题，但当要执行生成触发器或者存储过程时却出错，有大神做过这方面的吗？或者用其他方法可以执行能生成存储过程和触发器的sql脚本？求解！新人无币，望见谅~ ``` Exception in thread "main" com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 at org.apache.tools.ant.taskdefs.SQLExec.execute(SQLExec.java:672) at execSQL.AntExecSql.main(AntExecSql.java:38) Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:526) at com.mysql.jdbc.Util.handleNewInstance(Util.java:409) at com.mysql.jdbc.Util.getInstance(Util.java:384) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3562) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3494) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1960) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2114) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2690) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2619) at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:783) at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:626) at org.apache.tools.ant.taskdefs.SQLExec.execSQL(SQLExec.java:775) at org.apache.tools.ant.taskdefs.SQLExec.runStatements(SQLExec.java:745) at org.apache.tools.ant.taskdefs.SQLExec$Transaction.runTransaction(SQLExec.java:1055) at org.apache.tools.ant.taskdefs.SQLExec$Transaction.access$000(SQLExec.java:985) at org.apache.tools.ant.taskdefs.SQLExec.execute(SQLExec.java:653) ... 1 more ```

关于maven项目导入jdbc驱动的问题: 这是我在maven项目下创建的一个工具类，想要在某些操作后向mysql数据库导入信息 ![图片说明](https://img-ask.csdn.net/upload/201806/28/1530166852_26878.png) 运行之前我导入过mysql的包 ![图片说明](https://img-ask.csdn.net/upload/201806/28/1530166919_122838.png) 但是运行时，jdbc的驱动一直无法加载成功，代码没有被运行后来我在网上查了查，当修改pom.xml时又会报错 ![图片说明](https://img-ask.csdn.net/upload/201806/28/1530167308_912958.png) 想问问还有没有什么办法能加载起jdbc的驱动？

关于preparedstatement.executeUpdate方法: 我在自己写一个JDBC工具类。但卡在了update方法的实现。工具类目前的代码如下： public final class HDBTools { // 数据库url,username,password private static String URL = "jdbc:mysql://localhost:3306/shiyan?" + "useUnicode=true&characterEncoding=UTF8"; private static String URN = "root"; private static String PSW = "root"; private static HDBTools hdb = null; private HDBTools(){} // 单例模式 public static HDBTools getHDBTools() { // 延迟加载 if (hdb == null) { // 双重锁，防止多个线程同时访问 synchronized (HDBTools.class) { // 双重锁,调度程序的偶然情况 if (hdb == null) { hdb = new HDBTools(); } } } return hdb; } // 静态代码块 static { try { Class.forName("com.mysql.jdbc.Driver"); } catch (ClassNotFoundException e) { e.printStackTrace(); } } // 链接 private Connection conn = null; // 结果集 private ResultSet resultSet = null; // 语句 private PreparedStatement preparedstatement = null; //get the connection of database private Connection getConn() throws SQLException { return DriverManager.getConnection(URL, URN, PSW); } public List<Map<String,Object>> findAll(String sql,Object[] objs) throws SQLException{ List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); conn = getConn(); preparedstatement = (PreparedStatement) conn.prepareStatement(sql); for(int i = 0;i<objs.length;i++){ preparedstatement.setObject(i+1, objs[i]); } resultSet = (ResultSet) preparedstatement.executeQuery(); ResultSetMetaData rsmd = preparedstatement.getMetaData(); // 取得结果集列数 int columnCount = rsmd.getColumnCount(); Map<String, Object> data = null; while(resultSet.next()){ data = new HashMap<String, Object>(); // 每循环一条将列名和列值存入Map for (int i = 1; i < columnCount; i++) { data.put(rsmd.getColumnLabel(i), resultSet.getObject(rsmd.getColumnLabel(i))); } // 将整条数据的Map存入到List中 list.add(data); } close(resultSet, preparedstatement, conn); return list; } public int update(String sql,Object[] objs) throws SQLException{ conn = getConn(); preparedstatement = (PreparedStatement) conn.prepareStatement(sql); for(int i = 0;i<objs.length;i++){ preparedstatement.setObject(i+1, objs[i]); } System.out.println(preparedstatement); int rows = preparedstatement.executeUpdate(sql); close(resultSet, preparedstatement, conn); return rows; } public void close(ResultSet rs, PreparedStatement pst, Connection conn) { try { if (rs != null) { rs.close(); } } catch (SQLException e) { e.printStackTrace(); } finally { try { if (pst != null) { pst.close(); } } catch (SQLException e) { e.printStackTrace(); } finally { if (conn != null) { try { conn.close(); } catch (SQLException e) { e.printStackTrace(); } } } } } } 测试代码如下： HDBTools hdbt = HDBTools.getHDBTools(); int i = hdbt.update("insert into stu (name,address,money) values (?,?,?)", new Object[]{"hanshuai","changchun",10000}); System.out.println(i); 运行测试代码，预处理完成的SQL语句以及出现的异常如下： com.mysql.jdbc.PreparedStatement@14b2db7: insert into stu (name,address,money) values ('hanshuai','changchun',10000) Exception in thread "main" com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?,?,?)' at line 1 at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:936) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2941) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1623) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1715) at com.mysql.jdbc.Connection.execSQL(Connection.java:3243) at com.mysql.jdbc.Statement.executeUpdate(Statement.java:1343) at com.mysql.jdbc.Statement.executeUpdate(Statement.java:1260) at com.shuai.utils.jdbc.HDBTools.update(HDBTools.java:101) at com.shuai.utils.jdbc.Demo.main(Demo.java:12) 异常说，我的SQL 语句有问题，但是我将预处理后的SQL语句输出到控制台（见控制台结果第一行），将控制台SQL语句拷贝到SQL yang 中，运行数据添加成功。也就是说SQL语句没有问题。我感觉是我对preparedstatement.executeUpdate方法的理解出现了问题。希望各路大神不吝赐教。

请问大神在数据库中可以执行的sql语句，为什么通过java类连接数据库执行报错: 报错信息： java.sql.SQLException: Already closed.

我用Eclipse开发birt报表时数据源连接不上数据库同事却可以望大神看看: 驱动也加了的 ![图片说明](https://img-ask.csdn.net/upload/201607/13/1468373073_365575.png) 点击test Connection 报 java.lang.NoClassDefFoundError: sun/io/UnknownCharacterException at com.ibm.db2.jcc.b.a.<init>(a.java:238) at com.ibm.db2.jcc.b.b.a(b.java:1624) at com.ibm.db2.jcc.c.p.a(p.java:350) at com.ibm.db2.jcc.c.p.<init>(p.java:404) at com.ibm.db2.jcc.b.b.<init>(b.java:256) at com.ibm.db2.jcc.DB2Driver.connect(DB2Driver.java:163) at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager$WrappedDriver.connect(JDBCDriverManager.java:1271) at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.doConnect(JDBCDriverManager.java:306) at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.getConnection(JDBCDriverManager.java:209) at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.tryCreateConnection(JDBCDriverManager.java:824) at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.testConnection(JDBCDriverManager.java:745) at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.testConnection(JDBCDriverManager.java:641) at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.testConnection(JDBCDriverManager.java:613) at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.testConnection(JDBCDriverManager.java:681) at org.eclipse.birt.report.data.oda.jdbc.ui.util.DriverLoader.testConnection(DriverLoader.java:147) at org.eclipse.birt.report.data.oda.jdbc.ui.util.DriverLoader.testConnection(DriverLoader.java:175) at org.eclipse.birt.report.data.oda.jdbc.ui.profile.JDBCSelectionPageHelper.testConnection(JDBCSelectionPageHelper.java:961) at org.eclipse.birt.report.data.oda.jdbc.ui.profile.JDBCSelectionPageHelper.access$11(JDBCSelectionPageHelper.java:929) at org.eclipse.birt.report.data.oda.jdbc.ui.profile.JDBCSelectionPageHelper$8.widgetSelected(JDBCSelectionPageHelper.java:852) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4353) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1061) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4172) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761) at org.eclipse.jface.window.Window.runEventLoop(Window.java:832) at org.eclipse.jface.window.Window.open(Window.java:808) at org.eclipse.birt.report.designer.ui.dialogs.BaseDialog.open(BaseDialog.java:111) at org.eclipse.birt.report.designer.data.ui.providers.EditableDataSourceNodeProvider.performEdit(EditableDataSourceNodeProvider.java:73) at org.eclipse.birt.report.designer.internal.ui.views.DefaultNodeProvider.performRequest(DefaultNodeProvider.java:472) at org.eclipse.birt.report.designer.internal.ui.views.actions.EditAction.doAction(EditAction.java:85) at org.eclipse.birt.report.designer.internal.ui.views.actions.AbstractElementAction.run(AbstractElementAction.java:70) at org.eclipse.birt.report.designer.internal.ui.views.RenameListener.doubleClick(RenameListener.java:214) at org.eclipse.jface.viewers.StructuredViewer$1.run(StructuredViewer.java:831) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:178) at org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick(StructuredViewer.java:828) at org.eclipse.jface.viewers.AbstractTreeViewer.handleDoubleSelect(AbstractTreeViewer.java:1472) at org.eclipse.jface.viewers.StructuredViewer$4.widgetDefaultSelected(StructuredViewer.java:1237) at org.eclipse.jface.util.OpenStrategy.fireDefaultSelectionEvent(OpenStrategy.java:252) at org.eclipse.jface.util.OpenStrategy.access$0(OpenStrategy.java:249) at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:311) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4353) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1061) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4172) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:382) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:236) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) Caused by: java.lang.ClassNotFoundException: sun.io.UnknownCharacterException at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 69 more

Hibernate的根据实体自动生成表: 刚学hibernate，有很多地方不是很懂，跟着视频敲，但那个视频用的是ecplise，我用的是Myecplise，然后他可以创建一个hbm.xml指明映射关系，然后我不行，我只能根据实体创建出表，然后我在Hibernate.cfg.xml中加入了 <property name="dialect">org.hibernate.dialect.MySQLDialect</property> <property name="connection.url">jdbc:mysql://localhost:3306/websourse</property> <property name="connection.username">root</property> <property name="connection.password">123456</property> <property name="connection.driver_class">com.mysql.jdbc.Driver</property> <property name="myeclipse.connection.profile">TTT</property> <property name="show_sql">true</property> <property name="format_sql">true</property> <property name="hibernate.hbm2ddl.auto">create</property> <mapping class="Students"></mapping> 然后在websource中也没见到这张表![不知道哪里有问题](https://img-ask.csdn.net/upload/201701/10/1484045291_40259.png)

发现一个神奇的问题 prepareStatement setString方法的问题: import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class noSelect_Test { /* * 非查询sql语句 */ public static int nonSelect(String sql,String...args){ System.out.println( args.length); //通过工具类获取数据库连接 Connection conn=DBUtils.getConnection(); PreparedStatement ps=null; int rs = 0; try { ps= conn.prepareStatement(sql); for(int i=1;i<=args.length;i++){ int c=i; /* System.out.println( args.length); System.out.println(i); System.out.println(u); ps.setString(i++, u);*/ System.out.println(i); System.out.println(args[c-1]); ps.setString(i, args[c-1]); } rs=ps.executeUpdate(sql); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ DBUtils.close(null, ps, conn); } return rs; } public static void main(String args[]){ String sql="insert into t_login (username,userpwd)values(?,?)"; nonSelect(sql,"57656","25456"); } } 以上是操作下面是 2 kaishi 1 57656 57656 2 25456 25456 com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?,?)' at line 1 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:526) at com.mysql.jdbc.Util.handleNewInstance(Util.java:409) at com.mysql.jdbc.Util.getInstance(Util.java:384) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3566) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3498) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1959) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2113) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2562) at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1664) at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1583) at com.vince.jdbc.noSelect_Test.nonSelect(noSelect_Test.java:35) at com.vince.jdbc.noSelect_Test.main(noSelect_Test.java:49) 你们说该怎么搞

java.io.StreamCorruptedException: invalid stream header: 77327070是什么情况如何解决？: springboot+datajpa+sqlserver报Caused by: invalid stream header: 77327070是什么情况如何解决？刚接触springboot+jpa的小白，拜求各路大神的帮忙：开发工具是eclipse: 没写controller层，先用junit测试crud(即增删改查)中其中的修改和删除，不能用，代码如下：实体编译好后 1.首先JpaRepository层用的完全是继承JpaRepository的借口自带方法，出查询外没用自定义任何修改： @Repository @Transactional public interface sd extends JpaRepository<sd, String>{ Page<sd> findAll(Pageable pageable); } ```2.service 层是： @Override @Modifying @Transactional public void delete(String pid) { // TODO Auto-generated method stub cd.deleteById(pid); } @Override public boolean update(sd sf) { // TODO Auto-generated method stub cd.save(cfb); return true; } 3.测试类中： @Test @Modifying @Transactional public void deletepro() { cps.delete("fef232"); } @Test public void querypro() { /* int page=1,size=10; Sort sort = new Sort(Direction.DESC, "pid"); Pageable pageable = new PageRequest(page, size, sort); System.out.println(cps.findByPages(pageable));*/ } ``4.具体报错为： **org.hibernate.type.SerializationException: could not deserialize** at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_191] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_191] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_191] .......（太长了懒得粘了省略） **Caused by: java.io.StreamCorruptedException: invalid stream header: 77327070 ** at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:866) ~[na:1.8.0_191] at java.io.ObjectInputStream.<init>(ObjectInputStream.java:358) ~[na:1.8.0_191] at org.hibernate.internal.util.SerializationHelper$CustomObjectInputStream.<init>(SerializationHelper.java:309) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final] at org.hibernate.internal.util.SerializationHelper$CustomObjectInputStream.<init>(SerializationHelper.java:299) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final] at org.hibernate.internal.util.SerializationHelper.doDeserialize(SerializationHelper.java:218) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final] ... 110 common frames omitted 5，配置用的是：application.properties 具体是： #port is update server.port=8080 #connection spring.datasource.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver spring.datasource.url=jdbc:sqlserver://localhost:1433;DatabaseName=tzc12 spring.datasource.username=sa1 spring.datasource.password=qq hibernate.dialect=org.hibernate.dialect.SQLServerDialect spring.jpa.properties.hibernate.show_sql=true spring.jpa.hibernate.ddl-auto = update # Naming strategy spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy #controller spring.mvc.view.prefix=/ spring.mvc.view.suffix=.jsp #Connection Pool spring.datasource.initialSize=5 spring.datasource.minIdle=5 spring.datasource.maxActive=20 spring.datasource.maxWait=60000 spring.datasource.timeBetweenEvictionRunsMillis=60000 spring.datasource.minEvictableIdleTimeMillis=300000 spring.datasource.validationQuery=SELECT 1 FROM DUAL spring.datasource.testWhileIdle=true spring.datasource.testOnBorrow=false spring.datasource.testOnReturn=false ``` 除外，测试查询方法时junit未报错，但出现了以下情况是什么原因？如何解决： JpaRepository层看最上面 service层： @Override public Page<sd> findByPages(Pageable pageable) { // TODO Auto-generated method stub return cd.findAll(pageable); } @Test public void querypro() { int page=1,size=10; Sort sort = new Sort(Direction.DESC, "pid"); Pageable pageable = new PageRequest(page, size, sort); System.out.println(cps.findByPages(pageable)); } 结果出来为： Page 2 of 1 containing UNKNOWN instances 更新后：实体类： sd为主表，cds为附表，即cds 的主键是sd的外键。 @Entity @Table(name="cftbiop") public class sd implements Serializable{ /** * */ private static final long serialVersionUID = 8786038170195933216L; @Id private String pid=(UUID.randomUUID().toString()) ; private String pname ; private String introduction; private String marque; private String showcase; private String waytoraise ; private int suppot; private int raisefunds ; private int goalnum ; private cds showid; @ManyToOne @JoinColumn(name="showid") public cds getShowid() { return showid; } public void setShowid(CFShowProspecification showid) { this.showid = showid; } private boolean homepagedisplay; private int price; 其余getter,setter省略不粘了，都已getter,setter，测试查询方法，把page改为0后，报了和删除，修改一样的错误

java.lang.NoClassDefFoundError: package hx.nan.JDBCUtils; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import java.util.ResourceBundle; public class DBConnection { public static String URL; public static String USERNAME; public static String PASSWORD; public static String DRIVER; private DBConnection(){} static{ ResourceBundle rb = ResourceBundle.getBundle("JDBCUtils.jdbc_config"); URL = rb.getString("URL"); USERNAME = rb.getString("USERNAME"); PASSWORD = rb.getString("PASSWORD"); DRIVER = rb.getString("DRIVER"); try { Class.forName(DRIVER); } catch (ClassNotFoundException e) { System.out.println("驱动加载失败"); e.printStackTrace(); } } public static Connection getConnection(){ Connection con = null; try { con = DriverManager.getConnection(URL,USERNAME,PASSWORD); } catch (SQLException e) { e.printStackTrace(); System.out.println("获取数据库连接失败"); } return con; } public static void close(ResultSet rs,Statement state,Connection con){ try { if(rs!=null){ rs.close(); } state.close(); con.close(); } catch (SQLException e) { e.printStackTrace(); } } } java.lang.NoClassDefFoundError: Could not initialize class hx.nan.JDBCUtils.DBConnection hx.nan.JDBCUtils.JdbcTemplete.update(JdbcTemplete.java:30) hx.nan.Dao.UserDaoImp.add(UserDaoImp.java:33) hx.nan.action.RegisterAction.doPost(RegisterAction.java:29) javax.servlet.http.HttpServlet.service(HttpServlet.java:648) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 如果没有静态块的话不会报错，正常运行，这是怎么回事？而且try catch也没有捕获到异常

使用spring时，无法注入（提示：java.lang.NullPointerException）: 异常信息如下： org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:408) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:360) javax.servlet.http.HttpServlet.service(HttpServlet.java:710) javax.servlet.http.HttpServlet.service(HttpServlet.java:803) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:78) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77) root cause java.lang.NullPointerException com.test.dao.jdbc.UserDAO.insert(UserDAO.java:11) com.test.controller.LoginController.onSubmit(LoginController.java:21) org.springframework.web.servlet.mvc.SimpleFormController.onSubmit(SimpleFormController.java:408) org.springframework.web.servlet.mvc.SimpleFormController.onSubmit(SimpleFormController.java:380) org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:267) org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:250) org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153) org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:45) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:820) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:755) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:396) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:360) javax.servlet.http.HttpServlet.service(HttpServlet.java:710) javax.servlet.http.HttpServlet.service(HttpServlet.java:803) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:78) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77) web.xml <display-name>TestDemo</display-name> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/applicationContext.xml</param-value> </context-param> <servlet> <servlet-name>context</servlet-name> <servlet-class>org.springframework.web.context.ContextLoaderServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <filter> <filter-name>encodingFilter</filter-name> <filter-class> org.springframework.web.filter.CharacterEncodingFilter </filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <servlet> <servlet-name>dispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> applicationContext.xml: <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.microsoft.jdbc.sqlserver.SQLServerDriver"> <property name="url" value="jdbc:sqlserver://localhost:1433;databaseName=test"> <property name="username" value="sa"> <property name="password" value=""> </bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource"></property> <property name="mappingResources"> <list> <value>com/test/domain/User.hbm.xml</value> </list> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</prop> </props> </property> </bean> <bean id="userDAO" class="com.test.dao.jdbc.UserDAO"> <property name="sessionFactory" ref="sessionFactory"> </bean> dispatcherServlet-servlet.xml: <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/"></property> <property name="suffix" value=".jsp"></property> </bean> <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> <property name="mappings"> <props> <prop key="/login.do">loginController</prop> </props> </property> </bean> <bean id="loginController" class="com.test.controller.LoginController"> <property name="successView" value="/admin/success"></property> <property name="formView" value="/admin/login"></property> </bean> UserDAO.java: public class UserDAO extends BaseDao implements IUserDAO { public void insert(User user) { System.out.println("hibernateTemplate: " + this.getHibernateTemplate()); this.getHibernateTemplate().update("INSERT INTO USERPASS (USERNAME, PASSWORDS) VALUES ('" + user.getUserName() +"', '" + user.getPassword() + "')"); } public User find(Integer id) { List rows = this.getHibernateTemplate().find("SELECT * FROM USERPASS WHERE ID=" + id.intValue()); Iterator it = rows.iterator(); if(it.hasNext()) { Map userMap = (Map)it.next(); User user = new User(); user.setUserName(userMap.get("USERNAME").toString()); user.setPassword(userMap.get("PASSWORDS").toString()); return user; } return null; } }

Spring 注入为空: 在一个SSH的项目中遇到一个问题，我有一个dao的接口BaseJdbcDao，和一个dao的实现类BaseJdbcDaoImpl，实现类已经通过注解提交给容器进行管理，然后有一个工具类MailHelper想通过自动装配载入dao的实现类，可是每次都没有装配成功，代码如下，请教各位： [code="java"] package base; import java.util.List; import java.util.Map; import org.springframework.jdbc.support.rowset.SqlRowSet; public interface BaseJdbcDao { public abstract List queryForList(String sql); public abstract int queryForInt(String sql); public abstract SqlRowSet queryForRowSet(String sql); public abstract int update(String sql); public abstract Map queryForMap(String sql); public abstract void delete(String sql); public abstract void insert(String sql); } [/code] [code="java"] package base.impl; import java.util.List; import java.util.Map; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.jdbc.support.rowset.SqlRowSet; import base.BaseJdbcDao; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Repository; @Repository("basejdbcdao") public class BaseJdbcDaoImpl implements BaseJdbcDao { private JdbcTemplate jdbcTemplate; public JdbcTemplate getJdbcTemplate() { return jdbcTemplate; } @Autowired public void setJdbcTemplate(JdbcTemplate jdbcTemplate) { this.jdbcTemplate = jdbcTemplate; } public List queryForList(String sql){ System.out.println(sql); return this.getJdbcTemplate().queryForList(sql); } public int queryForInt(String sql){ System.out.println(sql); return this.getJdbcTemplate().queryForInt(sql); } public SqlRowSet queryForRowSet(String sql){ System.out.println(sql); return this.getJdbcTemplate().queryForRowSet(sql); } public int update(String sql){ System.out.println(sql); return this.getJdbcTemplate().update(sql); } public Map queryForMap(String sql){ System.out.println(sql); return this.getJdbcTemplate().queryForMap(sql); } public void delete(String sql){ System.out.println(sql); this.getJdbcTemplate().update(sql); } public void insert(String sql){ System.out.println(sql); this.getJdbcTemplate().execute(sql); } } [/code] [code="java"]package util; import java.io.IOException; import java.util.HashMap; import java.util.Properties; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.jdbc.support.rowset.SqlRowSet; import java.util.Date; import javax.activation.DataHandler; import javax.mail.Authenticator; import javax.mail.Message; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; import util.ByteArrayDataSource; import javax.mail.PasswordAuthentication; import base.BaseJdbcDao; import base.impl.BaseJdbcDaoImpl; public class MailHelper { @Autowired @Qualifier("basejdbcdao") private BaseJdbcDao dao; private String email; private String mobile; private String school; private String name; private String remark; private String appstr; public MailHelper(String school,String name,String mobile,String email,String remark,String appstr){ this.email = email; this.mobile = mobile; this.school = school; this.name = name; this.remark = remark; this.appstr = appstr; } public MailHelper(){}; public void sendMail(){ this.insertData(school,name,mobile,email,remark,appstr); } /** * 帐号申请的功能 * @param template * @param pschool * @param pname * @param pmobile * @param pemail * @param premark */ public void insertData(String pschool,String pname,String pmobile,String pemail,String premark,String appstr){ String email = changeContent( pemail); String mobile = changeContent( pmobile); String school =changeContent (pschool); String name =changeContent (pname); String remark = changeContent (premark); String to = "test@163.com"; String subject = "申请"; StringBuilder sb = new StringBuilder("insert into maillist(linkman,school,mobile,mail,remark)values('"+name+"','"+school+"','"+mobile+"','"+email+"','"+remark+"')"); dao.update(sb.toString()); remark = "内容略。。"; this.send( to, subject, remark); } /** * Sending a mail with given values.<br> * content parameter means the main email text,it refers to a html file. * * @param smtpServer * @param to * @param from * @param subject * @param content * @param emailUsername * @param emailUserpass * @author WYQ */ private String send(String to,String subject,String content) { try { HashMap<String,String> map = readParamters(); String smtpserver = map.get("smtpserver"); String publicaccount = map.get("publicaccount"); String publicpwd = map.get("publicpwd"); String from = map.get("publicmail"); Properties props = System.getProperties(); props.put("mail.smtp.port", "25"); props.put("mail.smtp.starttls.enable","false"); props.put("mail.smtp.auth", "true"); props.put("mail.smtp.host", smtpserver); Session session = null; session = Session.getDefaultInstance(props,new PasswordAuthenticator(publicaccount,publicpwd)); Message msg = new MimeMessage(session); msg.setFrom(new InternetAddress(from)); msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse( to, false)); msg.setSubject(subject); msg.setDataHandler(new DataHandler(new ByteArrayDataSource(content,"text/html; charset=\"utf-8\""))); msg.setHeader("X-Mailer", "XML-Mail"); msg.setSentDate(new Date()); // -- Send the message -- Transport.send(msg); return "success"; } catch (Exception ex) { return "Error" + ex; } } private HashMap<String,String> readParamters(){ HashMap<String,String> map = new HashMap<String,String>(); Properties properties =new Properties(); try { properties.load(MailHelper.class.getClassLoader().getResourceAsStream("mail.properties")); map.put("smtpserver", properties.getProperty("smtpserver")); map.put("publicmail", properties.getProperty("publicmail")); map.put("publicaccount", properties.getProperty("publicaccount")); map.put("publicpwd", properties.getProperty("publicpwd")); } catch (IOException e) { e.printStackTrace(); } return map; } } class PasswordAuthenticator extends Authenticator { private String username; private String password; public PasswordAuthenticator(String username, String password) { this.username = username; this.password = password; } protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication (username, password); } } [/code] 然后我在struts的action类中调用MailHelper的send方法进行邮件发送时，打印的dao总是为空，action的代码是： [code="java"] /** * 帐号申请-邮件发送 * @return */ public String sendMail(){ MailHelper mh = new MailHelper(); mh.sendMail(); success = true; return SUCCESS; } [/code] spring的自动扫描和注解配置已经开启，也已经把dao的package路径和MailHelper的package路径加入到基类中了， [code="java"] <context:component-scan base-package="action,service,dao,base,util,tools"/> [/code] 现在就是弄不明白，为什么通过new出来的MailHelper对象中注入的dao总是为空呢。

Spring boot controller类加入@Autowired注解启动报错: ![图片说明](https://img-ask.csdn.net/upload/201904/11/1554974904_886024.png) 工程结构 ``` //下面是全部的代码，最下面时错误日志。第一次提问，不知道插入代码片的格式是不是这样的，跪求大神指导，已经看了很多解决方案，但都无法解决我的问题，注释掉Autowired或者@注释掉Autowired(required=false)虽然可以启动项目，但是程序执行时又会发生错误，问题是逃避不了的。再次跪求大神指导。 //controller package controller; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; import bean.AppMessage; import service.AppMessageService; @RestController @RequestMapping("/appmessage") public class AppMessageController { @Autowired/*(required=false)*/ private AppMessageService service; @RequestMapping("/getThree") public List<AppMessage> getThreeForMessage(){ List<AppMessage> list = service.getMessage(); return list; } @RequestMapping("/getAll") public List<AppMessage> getAllMessage(){ List<AppMessage> list = service.getAllMessage(); int num = list.size(); if(null!=list && num>3){ for (int i = 0; i < num-3; i++) { list.remove(0); } } return list; } @RequestMapping("/getByID") public List<AppMessage> getMessageById(@RequestParam("id") String id){ List<AppMessage> list = service.getMessageById(id); int num = list.size(); if(null!=list && num>5){ for (int i = 0; i < num-5; i++) { list.remove(0); } } return list; } @RequestMapping(value = "/add",method = RequestMethod.POST) public int addMessage(@RequestBody AppMessage appMessage){ return service.addMessage(appMessage); } @RequestMapping(value="/delMessageById",method=RequestMethod.POST) public int delMessageById(@RequestParam("id") String id){ return service.delMessage(id); } } ``` ``` //Service package service; import java.util.ArrayList; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import bean.AppMessage; import mapper.AppMessageMapper; @Transactional @Service("appMessageService") public class AppMessageService { @Autowired private AppMessageMapper mapper; public List<AppMessage> getMessage(){ List<AppMessage> list = new ArrayList<AppMessage>(); list.add(mapper.selectByPrimaryKey("xtt")); //list = mapper.selectAll(); return list; } public List<AppMessage> getAllMessage(){ List<AppMessage> list = new ArrayList<AppMessage>(); list = mapper.selectAll(); return list; } public int addMessage(AppMessage appMessage) { return mapper.insert(appMessage); } public List<AppMessage> getMessageById(String id) { return mapper.getMessById(id); } public int delMessage(String id) { return mapper.deleteByPrimaryKey(id); } } ``` ``` //Mapper 接口，映射到mapper.xml package mapper; import java.util.List; import bean.AppMessage; public interface AppMessageMapper { int deleteByPrimaryKey(String id); int insert(AppMessage record); int insertSelective(AppMessage record); AppMessage selectByPrimaryKey(String id); int updateByPrimaryKeySelective(AppMessage record); int updateByPrimaryKey(AppMessage record); List<AppMessage> selectAll(); List<AppMessage> getMessById(String id); } ``` ```  <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" > <mapper namespace="mapper.AppMessageMapper" >  <resultMap id="BaseResultMap" type="bean.AppMessage" > <id column="id" property="id" jdbcType="VARCHAR" /> <result column="message" property="message" jdbcType="VARCHAR" /> <result column="senddate" property="senddate" jdbcType="TIMESTAMP" /> </resultMap> <sql id="Base_Column_List" > id, message, senddate </sql> <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.String" > select <include refid="Base_Column_List" /> from appuser_message where id = #{id,jdbcType=VARCHAR} </select> <delete id="deleteByPrimaryKey" parameterType="java.lang.String" > delete from appuser_message where id = #{id,jdbcType=VARCHAR} </delete> <insert id="insert" parameterType="bean.AppMessage" > insert into appuser_message (id, message, senddate ) values (#{id,jdbcType=VARCHAR}, #{message,jdbcType=VARCHAR}, #{senddate,jdbcType=TIMESTAMP} ) </insert> <insert id="insertSelective" parameterType="bean.AppMessage" > insert into appuser_message <trim prefix="(" suffix=")" suffixOverrides="," > <if test="id != null" > id, </if> <if test="message != null" > message, </if> <if test="senddate != null" > senddate, </if> </trim> <trim prefix="values (" suffix=")" suffixOverrides="," > <if test="id != null" > #{id,jdbcType=VARCHAR}, </if> <if test="message != null" > #{message,jdbcType=VARCHAR}, </if> <if test="senddate != null" > #{senddate,jdbcType=TIMESTAMP}, </if> </trim> </insert> <update id="updateByPrimaryKeySelective" parameterType="bean.AppMessage" > update appuser_message <set > <if test="message != null" > message = #{message,jdbcType=VARCHAR}, </if> <if test="senddate != null" > senddate = #{senddate,jdbcType=TIMESTAMP}, </if> </set> where id = #{id,jdbcType=VARCHAR} </update> <update id="updateByPrimaryKey" parameterType="bean.AppMessage" > update appuser_message set message = #{message,jdbcType=VARCHAR}, senddate = #{senddate,jdbcType=TIMESTAMP} where id = #{id,jdbcType=VARCHAR} </update> <select id="selectAll" resultMap="BaseResultMap"> select id, message, senddate from appuser_message order by senddate </select> <select id="getMessById" resultMap="BaseResultMap" parameterType="java.lang.String"> select id, message, senddate from appuser_message where id = #{id,jdbcType=VARCHAR} order by senddate asc </select> </mapper> ``` ``` //实体类 package bean; import java.util.Date; public class AppMessage { private String id; private String message; private Date senddate; public String getId() { return id; } public void setId(String id) { this.id = id == null ? null : id.trim(); } public String getMessage() { return message; } public void setMessage(String message) { this.message = message == null ? null : message.trim(); } public Date getSenddate() { return senddate; } public void setSenddate(Date senddate) { this.senddate = senddate; } } ``` ``` //启动类 package com.shuai.spring_boot_1; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.annotation.ComponentScan; /** * Hello world! * */ @ComponentScan(basePackages="controller") @SpringBootApplication public class App { public static void main(String[] args) { SpringApplication.run(App.class, args); } } ``` ``` pom.xml <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.3.5.RELEASE</version> </parent> <groupId>com.shuai</groupId> <artifactId>spring-boot-1</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>spring-boot-1</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <scope>test</scope> </dependency>  <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>com.jayway.jsonpath</groupId> <artifactId>json-path</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.0.0</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency>  </dependencies> <build> <plugins>  <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project> ``` ``` #properties文件 spring.datasource.url=jdbc:mysql://localhost:3306/world spring.datasource.username=root spring.datasource.password=000000 spring.datasource.driver-class-name=com.mysql.jdbc.Driver spring.datasource.max-idle=10 spring.datasource.max-wait=10000 spring.datasource.min-idle=5 spring.datasource.initial-size=5 server.port=8012 server.session.timeout=10 server.tomcat.uri-encoding=UTF-8 # mybatis.config= classpath:mybatis-config.xml mybatis.mapperLocations=classpath:mappers/*.xml # domain object's package #mybatis.typeAliasesPackage=com.lgp.SpringBoot.bean mybatis.typeAliasesPackage=bean # handler's package # mybatis.typeHandlersPackage= # check the mybatis configuration exists # mybatis.check-config-location= # mode of execution. Default is SIMPLE # mybatis.executorType= ``` ![图片说明](https://img-ask.csdn.net/upload/201904/11/1554976465_217387.png) 错误日志

使用druid连接mysql报错，搞不清楚是哪里的问题，求解答！！!: 报错如下： 04-Dec-2019 19:16:27.521 淇℃伅 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory 鎶妛eb 搴旂敤绋嬪簭閮ㄧ讲鍒扮洰褰� [D:\javaEE\tomcat\webapps\manager] 04-Dec-2019 19:16:27.537 淇℃伅 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [D:\javaEE\tomcat\webapps\manager] has finished in [16] ms 04-Dec-2019 19:16:40.134 淇℃伅 [http-nio-80-exec-9] com.alibaba.druid.support.logging.JakartaCommonsLoggingImpl.info {dataSource-1} inited org.springframework.dao.EmptyResultDataAccessException: Incorrect result size: expected 1, actual 0 at org.springframework.dao.support.DataAccessUtils.requiredSingleResult(DataAccessUtils.java:71) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:797) at dao.UserDaoImpl.UserDaoImpl.findUserByUsernameAndPassword(UserDaoImpl.java:19) at service.impl.UserServiceImpl.login(UserServiceImpl.java:13) at Servlet.LoginServlet.doPost(LoginServlet.java:55) at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:528) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:798) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:810) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) 配置文件： driverClassName=com.mysql.cj.jdbc.Driver url=jdbc:mysql://localhost:3306/day17 username=root password=root initialSize=5 maxActive=10 maxWait=3000 validationQuery:SELECT 1 testWhileIdle:true testOnBorrow:false testOnReturn:false 工具类如下： /** * JDBC工具类使用Durid连接池 */ public class JDBCUtils { private static DataSource ds ; static { try { //1.加载配置文件 Properties pro = new Properties(); //使用ClassLoader加载配置文件，获取字节输入流 InputStream is = JDBCUtils.class.getClassLoader().getResourceAsStream("druid.properties"); pro.load(is); //2.初始化连接池对象 ds = DruidDataSourceFactory.createDataSource(pro); } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } /** * 获取连接池对象 */ public static DataSource getDataSource(){ return ds; } /** * 获取连接Connection对象 */ public static Connection getConnection() throws SQLException { return ds.getConnection(); } }

struts2注解url没跳转到action里的方法，没报错也没跳转: 我补下图片： ![图片说明](https://img-ask.csdn.net/upload/201509/21/1442781387_310218.png) package com.AppServer.action; import javax.annotation.Resource; import org.apache.struts2.convention.annotation.Action; import org.apache.struts2.convention.annotation.ExceptionMapping; import org.apache.struts2.convention.annotation.ExceptionMappings; import org.apache.struts2.convention.annotation.Namespace; import org.apache.struts2.convention.annotation.ParentPackage; import org.apache.struts2.convention.annotation.Result; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Controller; import org.springframework.stereotype.Service; import com.AppServer.bean.User; import com.AppServer.dao.UserDAO; import com.AppServer.service.UserService; import com.demo.interceptor.MethodCacheInterceptor; import com.opensymphony.xwork2.ActionSupport; import com.opensymphony.xwork2.ModelDriven; @Controller @ParentPackage("struts-default") @Namespace(value = "msgAction") @ExceptionMappings({ @ExceptionMapping(exception = "java.lange.RuntimeException", result = "error") }) public class MsgAction extends ActionSupport { private String username; private String password; @Resource private UserService userService; @Action(value = "msg" , results = { @Result(name = "success", location = "/success.jsp"), @Result(name = "failure", location = "/failure.jsp"), @Result(name = "error", location = "/login.jsp")}) //获取用户信息 public String getInfo() { System.out.println("进来玩"); return SUCCESS; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } } url访问如下：http://127.0.0.1:8080/AppServer_1.1/msgAction/msg.do 访问之后没报错，没进去getInfo这个方法 struts2.xml: <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts>  <constant name="struts.i18n.encoding" value="UTF-8" />  <constant name="struts.serve.static.browserCache" value="false" />  <constant name="struts.configuration.xml.reload" value="true" />  <constant name="struts.devMode" value="true" />  <constant name="struts.ui.theme" value="simple" />  <constant name="struts.objectFactory" value="spring" />  <constant name="struts.action.extension" value="do" />  <package name="msg" extends="struts-default"> <default-action-ref name="indexPage" /> <global-results> <result name="exceptionPage">/error/exceptionPage.jsp</result> </global-results> <global-exception-mappings> <exception-mapping result="exceptionPage" exception="java.lang.Exception" /> </global-exception-mappings> <action name="indexPage"> <result>/login.jsp</result> </action>  </package> </struts> application.xml: <?xml version="1.0" encoding="UTF-8" ?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd" default-autowire="byName" default-lazy-init="true">   <context:component-scan base-package="com" />  <context:property-placeholder location="classpath:jdbc.properties" />         <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${jdbc.driverClassName}"/> <property name="url" value="${jdbc.url}"/> <property name="username" value="${jdbc.username}"/>  <property name="password" value="${jdbc.password}"/>  <property name="initialSize" value="1"/>  <property name="maxActive" value="500"/>  <property name="maxIdle" value="2"/>  <property name="minIdle" value="1"/> </bean>        <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" p:dataSource-ref="dataSource"> <property name="mappingLocations"> <list> <value>classpath*:/com/**/*.hbm.xml</value> </list> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">${hibernate.dialect}</prop> <prop key="hibernate.show_sql">${hibernate.show_sql}</prop> <prop key="hibernate.format_sql">${hibernate.format_sql}</prop> <prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop> <prop key="hibernate.cache.use_second_level_cache">${hibernate.cache.use_second_level_cache}</prop> <prop key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop> <prop key="hibernate.cache.region.factory_class">${hibernate.cache.region.factory_class}</prop> </props> </property> </bean>      <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager" p:sessionFactory-ref="sessionFactory" />    <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="insert*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="edit*" propagation="REQUIRED" /> <tx:method name="save*" propagation="REQUIRED" /> <tx:method name="add*" propagation="REQUIRED" /> <tx:method name="new*" propagation="REQUIRED" /> <tx:method name="set*" propagation="REQUIRED" /> <tx:method name="remove*" propagation="REQUIRED" /> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="change*" propagation="REQUIRED" /> <tx:method name="get*" propagation="REQUIRED" read-only="true" /> <tx:method name="find*" propagation="REQUIRED" read-only="true" /> <tx:method name="load*" propagation="REQUIRED" read-only="true" /> <tx:method name="search*" propagation="REQUIRED" read-only="true" /> <tx:method name="*" propagation="REQUIRED" read-only="true" /> </tx:attributes> </tx:advice> <aop:config> <aop:pointcut id="mypointcut" expression="execution(* com.**.service..*.*(..))" /> <aop:advisor advice-ref="txAdvice" pointcut-ref="mypointcut" /> </aop:config>  <bean id="hibernateTemplate" class="org.springframework.orm.hibernate4.HibernateTemplate" p:sessionFactory-ref="sessionFactory" /> <bean id="hibernateDaoSupport" class="org.springframework.orm.hibernate4.support.HibernateDaoSupport" p:hibernateTemplate-ref="hibernateTemplate" abstract="true"/> <bean id="sessionFactoryUtils" class="org.springframework.orm.hibernate4.SessionFactoryUtils" abstract="true"/> </beans> tomcat6.0:服务器运行正常：九月 21, 2015 4:22:24 上午 org.apache.catalina.core.AprLifecycleListener init 信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: D:\Java\jdk1.7.0\bin;E:\tomcat6\bin 九月 21, 2015 4:22:25 上午 org.apache.coyote.http11.Http11Protocol init 信息: Initializing Coyote HTTP/1.1 on http-8080 九月 21, 2015 4:22:25 上午 org.apache.catalina.startup.Catalina load 信息: Initialization processed in 516 ms 九月 21, 2015 4:22:25 上午 org.apache.catalina.core.StandardService start 信息: Starting service Catalina 九月 21, 2015 4:22:25 上午 org.apache.catalina.core.StandardEngine start 信息: Starting Servlet Engine: Apache Tomcat/6.0.41 九月 21, 2015 4:22:25 上午 org.apache.catalina.startup.HostConfig deployDirectory 信息: Deploying web application directory AppServer_1.1 九月 21, 2015 4:22:25 上午 org.apache.catalina.loader.WebappClassLoader validateJarFile 信息: validateJarFile(E:\tomcat6\webapps\AppServer_1.1\WEB-INF\lib\servlet-api.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class 九月 21, 2015 4:22:26 上午 org.apache.catalina.core.ApplicationContext log 信息: Set web app root system property: 'webapp.root' = [E:\tomcat6\webapps\AppServer_1.1\] 九月 21, 2015 4:22:26 上午 org.apache.catalina.core.ApplicationContext log 信息: Initializing log4j from [classpath:log4j.properties] 九月 21, 2015 4:22:26 上午 org.apache.catalina.core.ApplicationContext log 信息: Initializing Spring root WebApplicationContext 九月 21, 2015 4:22:34 上午 org.apache.coyote.http11.Http11Protocol start 信息: Starting Coyote HTTP/1.1 on http-8080 九月 21, 2015 4:22:34 上午 org.apache.jk.common.ChannelSocket init 信息: JK: ajp13 listening on /0.0.0.0:8009 九月 21, 2015 4:22:34 上午 org.apache.jk.server.JkMain start 信息: Jk running ID=0 time=0/23 config=null 九月 21, 2015 4:22:34 上午 org.apache.catalina.startup.Catalina start 信息: Server startup in 9364 ms 测试定时任务：2015-09-21 04:30:00:074 测试定时任务：2015-09-21 04:40:00:004 url访问地址：http://127.0.0.1:8080/AppServer_1.1/msgAction/msg.do 没有进去action的getinfo方法，这是为什么？而且也没有任何的报错！！！！！！！！！！！

晕死,有人见过类似的错误没?关于的hibernate的: 我没分了 5......... 先来错误提示(首先说明不是简单的表不存在,所有的映射文件都没有映射过company表[至少没有显式引用]) [code="java"]ERROR 2009-09-10 13:31:58.343 JDBCExceptionReporter:logExceptions - Table 'bfw_utf8.company' doesn't exist org.springframework.jdbc.BadSqlGrammarException: Hibernate operation: could not insert: [com.bafang.pojos.SiteAd]; bad SQL grammar [insert into site_ad (subsite_id, site_ad_location_id, site_ad_location_name, site_ad_keyword_id, site_ad_keyword, company_id, company_name, txt, url, media_type, media_file, type, charge, start_time, end_time, item_order, enabled) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)]; nested exception is com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: Table 'bfw_utf8.company' doesn't exist Caused by: com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: Table 'bfw_utf8.company' doesn't exist at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:936) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2870) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1573) at com.mysql.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:1160) at com.mysql.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:685) at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1400) at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1314) at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1299) at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeUpdate(NewProxyPreparedStatement.java:105) at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:73) at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:33) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2158) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2638) at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:48) at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:248) at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:298) at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:181) at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:107) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:187) at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:172) at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70) at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:535) at org.hibernate.impl.SessionImpl.save(SessionImpl.java:523) at org.hibernate.impl.SessionImpl.save(SessionImpl.java:519) at org.springframework.orm.hibernate3.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:598) at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:358) at org.springframework.orm.hibernate3.HibernateTemplate.save(HibernateTemplate.java:595) at com.bafang.pojos.base._BaseRootDAO.save(_BaseRootDAO.java:25) at com.bafang.pojos.base.BaseSiteAdDAO.save(BaseSiteAdDAO.java:20) at com.bafang.pojos.base.BaseSiteAdDAO$$FastClassByCGLIB$$33c630a7.invoke(<generated>) at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149) at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:609) at com.bafang.pojos.dao.SiteAdDAO$$EnhancerByCGLIB$$29bf5095.save(<generated>) at com.bafang.web.action.admin.main.AdAction.add(AdAction.java:107) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:269) at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:170) at org.springframework.web.struts.DelegatingActionProxy.execute(DelegatingActionProxy.java:106) at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58) at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67) at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51) at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190) at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304) at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190) at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) at com.bafang.web.servlet.BFActionServlet.process(BFActionServlet.java:26) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462) at javax.servlet.http.HttpServlet.service(HttpServlet.java:709) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at com.bafang.web.filters.HTMLFilter.synthesisURI(HTMLFilter.java:85) at com.bafang.web.filters.HTMLFilter.doFilter(HTMLFilter.java:60) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at com.bafang.web.filters.AdminFilter.doFilter(AdminFilter.java:41) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at com.bafang.web.filters.SubsiteFilter.doFilter(SubsiteFilter.java:35) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929) at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683) at java.lang.Thread.run(Thread.java:619)[/code] 相关hibernate映射文件 SiteAd.hbm.xml [code="xml"]<?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" > <hibernate-mapping package="com.bafang.pojos"> <class name="SiteAd" table="site_ad"> <id name="id" type="integer" column="id"> <generator class="identity" /> </id> <property name="subsiteId" column="subsite_id" type="integer" not-null="false" length="11" /> <property name="siteAdLocationId" column="site_ad_location_id" type="string" not-null="false" length="50" /> <property name="siteAdLocationName" column="site_ad_location_name" type="string" not-null="false" length="255" /> <many-to-one name="siteAdLocation" column="site_ad_location_id" class="SiteAdLocation" not-null="false" insert="false" update="false" /> <property name="siteAdKeywordId" column="site_ad_keyword_id" type="integer" not-null="false" length="11" /> <property name="siteAdKeyword" column="site_ad_keyword" type="string" not-null="false" length="255" /> <property name="companyId" column="company_id" type="integer" not-null="false" length="11" /> <property name="companyName" column="company_name" type="string" not-null="false" length="255" />  <property name="txt" column="txt" type="string" not-null="false" length="255" /> <property name="url" column="url" type="string" not-null="false" length="255" /> <property name="mediaType" column="media_type" type="string" not-null="false" length="255" /> <property name="mediaFile" column="media_file" type="string" not-null="false" length="255" /> <property name="type" column="type" type="string" not-null="false" length="100" /> <property name="charge" column="charge" type="java.lang.Float" not-null="false" length="12" /> <property name="startTime" column="start_time" type="timestamp" not-null="false" length="19" /> <property name="endTime" column="end_time" type="timestamp" not-null="false" length="19" /> <property name="itemOrder" column="item_order" type="integer" not-null="false" length="11" /> <property name="enabled" column="enabled" type="boolean" not-null="false" length="1" /> </class> </hibernate-mapping>[/code] pojo相关类 com.bafang.pojos.SiteAd.java [code="java"]package com.bafang.pojos; import com.bafang.pojos.base.BaseSiteAd; public class SiteAd extends BaseSiteAd { private static final long serialVersionUID = 7092206885096359130L; public SiteAd () { } public String getTypeName(){ if("1".equals(getType())) return "多媒体广告"; else if("2".equals(getType())) return "连接广告"; else if("3".equals(getType())) return "店铺广告"; else if("4".equals(getType())) return "店铺评论广告"; else return "其它广告"; } }[/code] com.bafang.pojos.base.BaseSiteAd.java [code="java"]package com.bafang.pojos.base; import java.io.Serializable; public abstract class BaseSiteAd implements Serializable { protected Integer id; protected Integer subsiteId; protected String siteAdLocationId; protected String siteAdLocationName; protected Integer siteAdKeywordId; protected String siteAdKeyword; protected Integer companyId; protected String companyName; protected String txt; protected String url; protected String mediaType; protected String mediaFile; protected String type; protected Float charge; protected java.util.Date startTime; protected java.util.Date endTime; protected Integer itemOrder; protected Boolean enabled; protected com.bafang.pojos.SiteAdLocation siteAdLocation; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public Integer getSubsiteId() { return subsiteId; } public void setSubsiteId(Integer subsiteId) { this.subsiteId = subsiteId; } public String getSiteAdLocationId() { return siteAdLocationId; } public void setSiteAdLocationId(String siteAdLocationId) { this.siteAdLocationId = siteAdLocationId; } public String getSiteAdLocationName() { return siteAdLocationName; } public void setSiteAdLocationName(String siteAdLocationName) { this.siteAdLocationName = siteAdLocationName; } public Integer getSiteAdKeywordId() { return siteAdKeywordId; } public void setSiteAdKeywordId(Integer siteAdKeywordId) { this.siteAdKeywordId = siteAdKeywordId; } public String getSiteAdKeyword() { return siteAdKeyword; } public void setSiteAdKeyword(String siteAdKeyword) { this.siteAdKeyword = siteAdKeyword; } public Integer getCompanyId() { return companyId; } public void setCompanyId(Integer companyId) { this.companyId = companyId; } public String getCompanyName() { return companyName; } public void setCompanyName(String companyName) { this.companyName = companyName; } public String getTxt() { return txt; } public void setTxt(String txt) { this.txt = txt; } public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } public String getMediaType() { return mediaType; } public void setMediaType(String mediaType) { this.mediaType = mediaType; } public String getMediaFile() { return mediaFile; } public void setMediaFile(String mediaFile) { this.mediaFile = mediaFile; } public String getType() { return type; } public void setType(String type) { this.type = type; } public Float getCharge() { return charge; } public void setCharge(Float charge) { this.charge = charge; } public java.util.Date getStartTime() { return startTime; } public void setStartTime(java.util.Date startTime) { this.startTime = startTime; } public java.util.Date getEndTime() { return endTime; } public void setEndTime(java.util.Date endTime) { this.endTime = endTime; } public Integer getItemOrder() { return itemOrder; } public void setItemOrder(Integer itemOrder) { this.itemOrder = itemOrder; } public Boolean getEnabled() { return enabled; } public void setEnabled(Boolean enabled) { this.enabled = enabled; } public com.bafang.pojos.SiteAdLocation getSiteAdLocation() { return siteAdLocation; } public void setSiteAdLocation(com.bafang.pojos.SiteAdLocation siteAdLocation) { this.siteAdLocation = siteAdLocation; } }[/code] 保存动作是直接调用spring的工具类 org.springframework.orm.hibernate3.support.HibernateDaoSupport.save(Object obj); 我debug过,就是保存的动作后报的错数据库query 日志 [code="java"]090910 13:31:50 2 Query SET autocommit=0 2 Prepare select siteadloca0_.id as id17_, siteadloca0_.subsite_id as subsite2_17_, siteadloca0_.name as name17_, siteadloca0_.type as type17_, siteadloca0_.width as width17_, siteadloca0_.height as height17_, siteadloca0_.item_count as item7_17_, siteadloca0_.url as url17_, siteadloca0_.enabled as enabled17_ from site_ad_location siteadloca0_ where 1=1 and siteadloca0_.subsite_id=1 limit ? 2 Execute select siteadloca0_.id as id17_, siteadloca0_.subsite_id as subsite2_17_, siteadloca0_.name as name17_, siteadloca0_.type as type17_, siteadloca0_.width as width17_, siteadloca0_.height as height17_, siteadloca0_.item_count as item7_17_, siteadloca0_.url as url17_, siteadloca0_.enabled as enabled17_ from site_ad_location siteadloca0_ where 1=1 and siteadloca0_.subsite_id=1 limit 20 2 Close stmt 2 Query commit 2 Query SET autocommit=1 2 Query SET autocommit=0 2 Prepare select count(*) as col_0_0_ from site_ad_location siteadloca0_ where 1=1 and siteadloca0_.subsite_id=? 2 Execute select count(*) as col_0_0_ from site_ad_location siteadloca0_ where 1=1 and siteadloca0_.subsite_id=1 2 Close stmt 2 Query commit 2 Query SET autocommit=1 090910 13:31:58 2 Prepare insert into site_ad (subsite_id, site_ad_location_id, site_ad_location_name, site_ad_keyword_id, site_ad_keyword, company_id, company_name, txt, url, media_type, media_file, type, charge, start_time, end_time, item_order, enabled) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) 2 Query select name into str from site_ad_location where id=new.site_ad_location_id 2 Query select name into str from company where id=new.company_id 2 Query SELECT 1 2 Close stmt D:\Program Files\MySQL\MySQL Server 5.1\bin\mysqld, Version: 5.1.37-community-log (MySQL Community Server (GPL)). started with: TCP Port: 3306, Named Pipe: (null) Time Id Command Argument 090910 13:33:15 1 Connect root@localhost on 1 Query SET NAMES utf8 2 Connect root@localhost on 2 Query SELECT @@sql_mode 2 Query SET SESSION sql_mode='STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' 2 Query SET NAMES utf8 2 Quit 090910 13:33:17 1 Quit 3 Connect root@localhost on 3 Query SELECT @@sql_mode 3 Query SET SESSION sql_mode='STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' 3 Query SET NAMES utf8[/code] [b]问题补充：[/b] [quote]dwangel[/quote]已经清理过项目还是一样谢谢啊已经找到问题了以前写成的程序员弄了个触发器在数据库里刚刚发现的谢谢了分不多都给你了

做了一个简单的SSH应用，但启动tomcat时总抛NoClassDefFoundError异常: 做了一个简单的SSH应用，但启动tomcat时总抛NoClassDefFoundError异常。 <br />会有<pre name="code" class="java">java.lang.ClassNotFoundException: javax.transaction.TransactionManager</pre> <br />各位一定要帮看看啊！（ssh未入门级） <br /> <br />开发工具：Eclipse3.2+Tomcat5.5+Mysql5.0 <br />建表 <br /><pre name="code" class="java">CREATE TABLE `people` ( `id` int(11) NOT NULL auto_increment, `name` varchar(100) default NULL, `location` varchar(100) default NULL, PRIMARY KEY (`id`) ) </pre> <br /> <br />首先，建立工程和package,以下是我的工程目录 <br /> action <br /> DeletePeopleAction.java //删除人员action <br /> EditPeopleAction.java //编辑人员action第一步，读取需要修改的人员资料 <br /> EditPeopleActionDo.java //修改人员action <br /> ListPeopleAction.javaSave //显示人员列表action <br /> SavePeopleAction.java //新增人员action <br /> SearchPeopleAction.java //查找人员action <br />dao <br /> IDAO.java //数据库操作接口 <br /> StudentDAOImpl.java //数据库操作实现 <br />domain <br /> AbstractPeople.java //实体抽象类 <br /> People.hbm.xml //数据库映射 <br /> People.java //实体类 <br />service <br /> IService.java //服务层接口 <br /> StudentManagerImpl.java //服务层实现 <br />util <br /> Character.java //字符编码过滤器 <br /> PageSupport.java //分页 <br />applicationContext.xml //Spring配置文件（hibernate部分和Service部分） <br /> <br />JSP：不详细些了。 <br /> addStudent.jsp <br /> editStudent.jsp <br /> searchList.jsp <br /> searchStudent.jsp <br /> studentList.jsp <br /> <br />我觉得问题就出在 Spring 的xml部署上， <br />或者是我引入的包有冲突，要么就是根本不对。 <br />下面是应用的配置信息： <br />1.web.xml <br /><pre name="code" class="java"> <web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemalocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/classes/applicationContext.xml</param-value> </context-param> <resource-ref> <description>SqlServer Datasource example</description> <res-ref-name>jdbc/StudentManager</res-ref-name> <res-type>javax.sql.DataSource</res-type> <res-auth>Container</res-auth> </resource-ref> <filter> <filter-name>hibernateFilter</filter-name> <filter-class> org.springframework.orm.hibernate3.support.OpenSessionInViewFilter </filter-class> <init-param> <param-name>singleSession</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>hibernateFilter</filter-name> <url-pattern>*.do</url-pattern> </filter-mapping> <servlet> <servlet-name>SpringContextServlet</servlet-name> <servlet-class> org.springframework.web.context.ContextLoaderServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet> <servlet-name>SpringLog4jConfigServlet</servlet-name> <servlet-class> org.springframework.web.util.Log4jConfigServlet </servlet-class> </servlet> <servlet> <servlet-name>web</servlet-name> <servlet-class> org.springframework.web.servlet.DispatcherServlet </servlet-class> </servlet> <servlet> <servlet-name>action</servlet-name> <servlet-class>org.apache.struts.action.ActionServlet</servlet-class> <init-param> <param-name>config</param-name> <param-value>/WEB-INF/struts-config.xml</param-value> </init-param> <init-param> <param-name>debug</param-name> <param-value>2</param-value> </init-param> <init-param> <param-name>detail</param-name> <param-value>2</param-value> </init-param> <load-on-startup>2</load-on-startup> </servlet> <servlet-mapping> <servlet-name>action</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>/WEB-INF/jsp/index.jsp</welcome-file> </welcome-file-list> <taglib> <taglib-uri>/WEB-INF/struts-bean.tld</taglib-uri> <taglib-location>/WEB-INF/struts-bean.tld</taglib-location> </taglib> <taglib> <taglib-uri>/WEB-INF/struts-html.tld</taglib-uri> <taglib-location>/WEB-INF/struts-html.tld</taglib-location> </taglib> <taglib> <taglib-uri>/WEB-INF/struts-logic.tld</taglib-uri> <taglib-location>/WEB-INF/struts-logic.tld</taglib-location> </taglib> <taglib> <taglib-uri>/WEB-INF/struts-nested.tld</taglib-uri> <taglib-location>/WEB-INF/struts-nested.tld</taglib-location> </taglib> </web-app> </pre> <br /> <br />2.struts-config.xml <br /><pre name="code" class="java"> <struts-config> <data-sources> <form-beans> <form-bean name="people" type="domain.People"></form-bean> </form-beans> <global-exceptions> <global-forwards> <action-mappings> <action path="/savePeople" name="people" type="action.SavePeopleAction" scope="session" parameter="method"> <forward name="success" path="/listPeople.do"></forward> </action> <action path="/listPeople" name="people" type="action.ListPeopleAction"> <forward name="success" path="/studentList.jsp"></forward> </action> <action path="/deletePeople" name="people" type="action.DeletePeopleAction"> <forward name="success" path="/studentList.jsp"></forward> </action> <action path="/editPeople" name="people" type="action.EditPeopleAction"> <forward name="success" path="/editStudent.jsp"></forward> </action> <action path="/editPeopleDo" name="people" type="action.EditPeopleActionDo"> <forward name="success" path="/studentList.jsp"></forward> </action> <action path="/searchPeople" name="people" type="action.SearchPeopleAction"> <forward name="success" path="/searchList.jsp"></forward> </action> <action path="/test" name="people" type="action.Test"></action> </action-mappings> <controller locale="true"> <message-resources parameter="">  </struts-config> </pre> <br /> <br /> <br />3.applicationContext.xml <br /><pre name="code" class="java"> <beans>  <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager" depends-on="sessionFactory"> <property name="sessionFactory"> <ref bean="sessionFactory"> </property> </bean> <bean id="studentManager" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"> <property name="transactionManager"> <ref bean="transactionManager"></ref> </property> <property name="target"> <bean class="service.StudentManagerImpl"> <property name="studentDAO"> <ref bean="StudentDAO"> </property> </bean> </property> <property name="transactionAttributes"> <props> <prop key="save*">PROPAGATION_REQUIRED</prop> <prop key="list*">PROPAGATION_REQUIRED,readOnly</prop> <prop key="delete*">PROPAGATION_REQUIRED</prop> <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop> <prop key="edit*">PROPAGATION_REQUIRED</prop> <prop key="search*">PROPAGATION_REQUIRED</prop> </props> </property> <property name="proxyTargetClass"> <value>true</value> </property> </bean>  <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName"> <value>com.mysql.jdbc.Driver</value> </property> <property name="url"> <value>jdbc:mysql://localhost:3306/dbjee</value> </property> <property name="username"> <value>root</value> </property> <property name="password"> <value>123456</value> </property> </bean>  <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource"> <ref local="dataSource"> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.cache.use_query_cache">true</prop> <prop key="hibernate.cache.provider_class"> org.hibernate.cache.HashtableCacheProvider</prop> </props> </property>  <property name="mappingResources"> <list> <value>domain/People.hbm.xml</value> </list> </property> </bean> <bean id="StudentDAO" class="dao.StudentDAOImpl"> <property name="sessionFactory"> <ref local="sessionFactory"> </property> </bean> </beans> </pre> <br /> <br />4.People.hbm.xml <br /><pre name="code" class="java">  <hibernate-mapping package="domain"> <class name="People" table="people"> <id name="id" type="java.lang.Integer"> <column name="id"> <generator class="increment"></generator> </id> <property name="name" type="java.lang.String"> <column name="name" length="100"> </property> <property name="location" type="java.lang.String"> <column name="location" length="100"> </property> </class> </hibernate-mapping> </pre> <br /> <br /> <br /><span style="font-size: large;">附件里是我引入的jar包。 <br />希望各位能帮帮忙，困扰我2天，一直出不来。</span> <br /> <br />最后把启动Tomcat时报的错误也贴出来。 <br /><pre name="code" class="java">严重: Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/classes/applicationContext.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: javax/transaction/TransactionManager java.lang.NoClassDefFoundError: javax/transaction/TransactionManager at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Unknown Source) at java.lang.Class.getDeclaredMethods(Unknown Source) at java.beans.Introspector$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.beans.Introspector.getPublicDeclaredMethods(Unknown Source) at java.beans.Introspector.getTargetMethodInfo(Unknown Source) at java.beans.Introspector.getBeanInfo(Unknown Source) at java.beans.Introspector.getBeanInfo(Unknown Source) at org.springframework.beans.CachedIntrospectionResults.<init>(CachedIntrospectionResults.java:149) at org.springframework.beans.CachedIntrospectionResults.forClass(CachedIntrospectionResults.java:85) at org.springframework.beans.BeanWrapperImpl.setIntrospectionClass(BeanWrapperImpl.java:234) at org.springframework.beans.BeanWrapperImpl.setWrappedInstance(BeanWrapperImpl.java:192) at org.springframework.beans.BeanWrapperImpl.setWrappedInstance(BeanWrapperImpl.java:176) at org.springframework.beans.BeanWrapperImpl.<init>(BeanWrapperImpl.java:129) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:491) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:366) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:144) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:330) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:144) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:283) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:321) at org.springframework.web.context.support.AbstractRefreshableWebApplicationContext.refresh(AbstractRefreshableWebApplicationContext.java:139) at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:252) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:190) at org.springframework.web.context.ContextLoaderServlet.init(ContextLoaderServlet.java:83) at javax.servlet.GenericServlet.init(GenericServlet.java:212) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1139) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:966) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3956) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4230) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:626) at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:553) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1150) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022) at org.apache.catalina.core.StandardHost.start(StandardHost.java:736) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:448) at org.apache.catalina.core.StandardServer.start(StandardServer.java:700) at org.apache.catalina.startup.Catalina.start(Catalina.java:552) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433) Caused by: java.lang.ClassNotFoundException: javax.transaction.TransactionManager at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1386) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1232) at java.lang.ClassLoader.loadClassInternal(Unknown Source) ... 55 more 2008-11-14 20:08:31 org.apache.catalina.core.ApplicationContext log 严重: StandardWrapper.Throwable org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/classes/applicationContext.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: javax/transaction/TransactionManager java.lang.NoClassDefFoundError: javax/transaction/TransactionManager at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Unknown Source) at java.lang.Class.getDeclaredMethods(Unknown Source) at java.beans.Introspector$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.beans.Introspector.getPublicDeclaredMethods(Unknown Source) at java.beans.Introspector.getTargetMethodInfo(Unknown Source) at java.beans.Introspector.getBeanInfo(Unknown Source) at java.beans.Introspector.getBeanInfo(Unknown Source) at org.springframework.beans.CachedIntrospectionResults.<init>(CachedIntrospectionResults.java:149) at org.springframework.beans.CachedIntrospectionResults.forClass(CachedIntrospectionResults.java:85) at org.springframework.beans.BeanWrapperImpl.setIntrospectionClass(BeanWrapperImpl.java:234) at org.springframework.beans.BeanWrapperImpl.setWrappedInstance(BeanWrapperImpl.java:192) at org.springframework.beans.BeanWrapperImpl.setWrappedInstance(BeanWrapperImpl.java:176) at org.springframework.beans.BeanWrapperImpl.<init>(BeanWrapperImpl.java:129) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:491) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:366) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:144) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:330) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:144) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:283) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:321) at org.springframework.web.context.support.AbstractRefreshableWebApplicationContext.refresh(AbstractRefreshableWebApplicationContext.java:139) at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:252) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:190) at org.springframework.web.context.ContextLoaderServlet.init(ContextLoaderServlet.java:83) at javax.servlet.GenericServlet.init(GenericServlet.java:212) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1139) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:966) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3956) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4230) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:626) at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:553) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1150) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022) at org.apache.catalina.core.StandardHost.start(StandardHost.java:736) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:448) at org.apache.catalina.core.StandardServer.start(StandardServer.java:700) at org.apache.catalina.startup.Catalina.start(Catalina.java:552) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433) Caused by: java.lang.ClassNotFoundException: javax.transaction.TransactionManager at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1386) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1232) at java.lang.ClassLoader.loadClassInternal(Unknown Source) ... 55 more 2008-11-14 20:08:31 org.apache.catalina.core.StandardContext loadOnStartup 严重: Servlet /SSHDemo threw load() exception java.lang.ClassNotFoundException: javax.transaction.TransactionManager at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1386) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1232) at java.lang.ClassLoader.loadClassInternal(Unknown Source) at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Unknown Source) at java.lang.Class.getDeclaredMethods(Unknown Source) at java.beans.Introspector$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.beans.Introspector.getPublicDeclaredMethods(Unknown Source) at java.beans.Introspector.getTargetMethodInfo(Unknown Source) at java.beans.Introspector.getBeanInfo(Unknown Source) at java.beans.Introspector.getBeanInfo(Unknown Source) at org.springframework.beans.CachedIntrospectionResults.<init>(CachedIntrospectionResults.java:149) at org.springframework.beans.CachedIntrospectionResults.forClass(CachedIntrospectionResults.java:85) at org.springframework.beans.BeanWrapperImpl.setIntrospectionClass(BeanWrapperImpl.java:234) at org.springframework.beans.BeanWrapperImpl.setWrappedInstance(BeanWrapperImpl.java:192) at org.springframework.beans.BeanWrapperImpl.setWrappedInstance(BeanWrapperImpl.java:176) at org.springframework.beans.BeanWrapperImpl.<init>(BeanWrapperImpl.java:129) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:491) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:366) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:144) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:330) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:144) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:283) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:321) at org.springframework.web.context.support.AbstractRefreshableWebApplicationContext.refresh(AbstractRefreshableWebApplicationContext.java:139) at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:252) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:190) at org.springframework.web.context.ContextLoaderServlet.init(ContextLoaderServlet.java:83) at javax.servlet.GenericServlet.init(GenericServlet.java:212) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1139) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:966) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3956) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4230) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:626) at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:553) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1150) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022) at org.apache.catalina.core.StandardHost.start(StandardHost.java:736) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:448) at org.apache.catalina.core.StandardServer.start(StandardServer.java:700) at org.apache.catalina.startup.Catalina.start(Catalina.java:552) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433) 2008-11-14 20:08:32 org.apache.coyote.http11.Http11BaseProtocol start 信息: Starting Coyote HTTP/1.1 on http-8888 2008-11-14 20:08:32 org.apache.jk.common.ChannelSocket init </pre><br /><strong>问题补充</strong><br /><div class="quote_title">zzxplayful 写道</div><div class="quote_div">没有这个包 <br />java.lang.ClassNotFoundException: javax.transaction.TransactionManager </div> <br />这段异常我看得懂， <br />包括下面的： <br /><pre name="code" class="java">org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/classes/applicationContext.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: javax/transaction/TransactionManager</pre> <br /> <br />都看得懂，我想知道的是解决办法。 <br />比如 <br />javax.transaction.TransactionManager <br />在什么包里？ <br />要怎样解决？<br /><strong>问题补充</strong><br /><div class="quote_title">fywcc 写道</div><div class="quote_div">这个是spring里面的你把SPRING的jar包重新覆盖进去试试</div> <br /> <br />我在Spring包里看了啊， <br />源码都是以 org.springframework.×××× 开始的啊， <br />没有 javax.transcation.** 啊， <br />怎么办？还是需要什么别的包，要么是我的包冲突了。 <br /> <br />我引入了： <br />antlr <br />commons-beanutils.jar <br />commons-digester.jar <br />commons-fileupload.jar <br />commons-logging.jar <br />commons-validator.jar <br />jakarta-oro.jar <br />struts.jar <br /> <br />spring.jar <br /> <br />hibernate3.jar<br /><strong>问题补充</strong><br /><div class="quote_title">jones 写道</div><div class="quote_div">放入jta.jar就行了，找找吧，spring里面应该有，要不就是Hibernate里面有</div> <br />谢谢你。 <br />我把缺少的包都放上了，终于启动Tomcat时候不抛异常，而且也能打开welcome页面了。 <br /> <br />但还有其他问题，明天搞。 <br /> <br />第一次搞SSH，多谢指点啊！

移动端app后台框架，springmvc+spring+mybatis占用服务器内存太大是什么原因: <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:task="http://www.springframework.org/schema/task" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd" default-lazy-init="true">  <context:annotation-config/>   <context:component-scan base-package="smart.service" /> <context:component-scan base-package="scott.service.*" />  <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"> <property name="dataSource" ref="dataSource" /> </bean>    <context:component-scan base-package="smart.smartutil.*"></context:component-scan> <task:annotation-driven scheduler="myScheduler"/> <task:scheduler id="myScheduler" pool-size="5"/>   <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name = "driverClassName" value = "com.microsoft.sqlserver.jdbc.SQLServerDriver" /> <property name="url" value=""></property> <property name="username"><value> </value></property> <property name="password"><value></value></property>   <property name="maxActive" value="10" />  <property name="maxIdle" value="10" />  <property name="minIdle" value="0" />  <property name="maxWait" value="90000" />  <property name="timeBetweenEvictionRunsMillis" value="60000" />  <property name="minEvictableIdleTimeMillis" value="25200000" /> </bean>  <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <aop:config> <aop:advisor pointcut="execution(* com.jeecg.service.*.*(..))" advice-ref="txAdvice" /> <aop:advisor pointcut="execution(* smart.service.*.*(..))" advice-ref="txAdvice" /> <aop:advisor pointcut="execution(* scott.service.*.*(..))" advice-ref="txAdvice" />       </aop:config> <bean id="logBean" class="com.base.util.LogAspect" /> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="get*" read-only="true" /> <tx:method name="query*" read-only="true" /> <tx:method name="find*" read-only="true" /> <tx:method name="load*" read-only="true" /> <tx:method name="select*" read-only="true" /> <tx:method name="*" propagation="REQUIRED" rollback-for="Exception" /> </tx:attributes> </tx:advice>  <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="mapperLocations"> <list>  <value>classpath:smart/mapper/*Mapper.xml</value> </list> </property> <property name="configLocation" value="classpath:mybatis-config.xml" /> </bean>  <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" autowire="byName"> <property name="basePackage" value="com.jeecg.dao,scott.dao.*,smart.dao" /> <property name="sqlSessionFactory" ref="sqlSessionFactory"/> </bean>  <bean id="springContextUtil" class="com.base.util.SpringContextUtil" /> </beans>

Sping 构造方法注入错误 java.lang.IllegalStateException: Failed to load ApplicationContext: 错误信息 Mon Oct 08 10:39:48 CST 2018 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification. Mon Oct 08 10:39:48 CST 2018 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification. 10:39:48,985 ERROR TestContextManager:314 - Caught exception while allowing TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener@d4602a] to prepare test instance [org.konghao.cms.service.TestIndexService@21ae6e73] java.lang.IllegalStateException: Failed to load ApplicationContext at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:99) at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:122) at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:105) at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:74) at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:312) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:211) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:288) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:284) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206) Caused by: java.lang.IllegalArgumentException at org.springframework.asm.ClassReader.<init>(Unknown Source) at org.springframework.asm.ClassReader.<init>(Unknown Source) at org.springframework.asm.ClassReader.<init>(Unknown Source) at org.springframework.core.LocalVariableTableParameterNameDiscoverer.inspectClass(LocalVariableTableParameterNameDiscoverer.java:110) at org.springframework.core.LocalVariableTableParameterNameDiscoverer.getParameterNames(LocalVariableTableParameterNameDiscoverer.java:85) at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:193) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1051) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:955) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:490) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:910) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:853) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:768) at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:795) at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:723) at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:196) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1051) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:955) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:490) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:626) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479) at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:120) at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60) at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:100) at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:248) at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContextInternal(CacheAwareContextLoaderDelegate.java:64) at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:91) ... 25 more 测试类代码 package org.konghao.cms.service; import javax.inject.Inject; import org.junit.Test; import org.junit.runner.RunWith; import org.konghao.basic.model.SystemContext; import org.konghao.cms.service.IIndexService; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration("/beans.xml") public class TestIndexService { @Inject private IIndexService indexService; private String rp="D:\\teach_source\\class2\\j2EE\\cms2013\\cms-web\\src\\main\\webapp"; @Test public void testGenerateTop() { SystemContext.setRealPath(rp); indexService.generateTop(); } } package org.konghao.cms.service; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.inject.Inject; import org.konghao.basic.model.SystemContext; import org.konghao.basic.util.FreemarkerUtil; import org.konghao.cms.model.Channel; import org.konghao.cms.web.BaseInfoUtil; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Service("indexService") public class IndexService implements IIndexService { private String ftlPath; private String outPath; private FreemarkerUtil util; @Autowired(required=true) public IndexService(String ftlPath, String outPath) { super(); if(util==null) { this.ftlPath = ftlPath; this.outPath = outPath; util=FreemarkerUtil.getInstance(ftlPath); } } private IChannelService channelService; public IChannelService getChannelService() { return channelService; } @Inject public void setChannelService(IChannelService channelService) { this.channelService = channelService; } @Override public void generateTop() { List<Channel> cs = channelService.listTopNavChannel(); Map<String, Object>root = new HashMap<String, Object>(); root.put("navs", cs); String outfile =SystemContext.getRealPath()+outPath+"/top.jsp"; util.fprint(root,"/top.ftl",outfile); } } bean.xml 文件 <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">  <context:annotation-config />  <context:component-scan base-package="org.konghao" /> <bean id="ftlPath" class="java.lang.String"> <constructor-arg value="/ftl"/> </bean> <bean id="outPath" class="java.lang.String"> <constructor-arg value="/jsp/template"/> </bean> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${jdbc.driverClassName}" /> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" />  <property name="initialSize" value="1" />      <property name="minIdle" value="1" /> <property name="maxActive" value="100" /> <property name="maxIdle" value="20" /> <property name="maxWait" value="1000" /> </bean>  <context:property-placeholder location="classpath:jdbc.properties" />  <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">  <property name="dataSource" ref="dataSource" />  <property name="packagesToScan"> <value>org.konghao.cms.model</value> </property> <property name="hibernateProperties">  <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.hbm2ddl.auto">update</prop> <prop key="hibernate.format_sql">false</prop> </props> </property> </bean>   <bean id="txManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean>  <aop:config>   <aop:pointcut id="allMethods" expression="execution(* org.konghao.cms.service.*.*(..))" />  <aop:advisor advice-ref="txAdvice" pointcut-ref="allMethods" /> </aop:config>  <tx:advice id="txAdvice" transaction-manager="txManager"> <tx:attributes>  <tx:method name="*" propagation="REQUIRED" read-only="true"/>  <tx:method name="add*" propagation="REQUIRED"/> <tx:method name="del*" propagation="REQUIRED"/> <tx:method name="update*" propagation="REQUIRED"/> <tx:method name="save*" propagation="REQUIRED"/> <tx:method name="clear*" propagation="REQUIRED"/> </tx:attributes> </tx:advice>  </beans>

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