org.apache.ibatis.exceptions.PersistenceException怎么解决?

调试一个开源项目出现报错,项目所有sql都会报空指针异常


严重: Servlet.service() for servlet [springMvc] in context with path [/mallapp] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: 
### Error querying database.  Cause: java.lang.NullPointerException
### The error may exist in file [H:\WorksSpace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\mallapp\WEB-INF\classes\mybatis\category\CategoryMapper.xml]
### The error may involve CategoryMapper.listAll-Inline
### The error occurred while setting parameters
### SQL: select       category_name,    category_img,    sort,    category_id,   super_id      from        shop_category      where      super_id =?   order by sort
### Cause: java.lang.NullPointerException] with root cause
java.lang.NullPointerException
    at org.apache.ibatis.type.BaseTypeHandler.setParameter(BaseTypeHandler.java:43)
    at org.apache.ibatis.scripting.defaults.DefaultParameterHandler.setParameters(DefaultParameterHandler.java:81)
    at org.apache.ibatis.executor.statement.PreparedStatementHandler.parameterize(PreparedStatementHandler.java:80)
    at org.apache.ibatis.executor.statement.RoutingStatementHandler.parameterize(RoutingStatementHandler.java:61)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:62)
    at com.sun.proxy.$Proxy84.parameterize(Unknown Source)
    at org.apache.ibatis.executor.ReuseExecutor.prepareStatement(ReuseExecutor.java:79)
    at org.apache.ibatis.executor.ReuseExecutor.doQuery(ReuseExecutor.java:56)
    at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267)
    at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137)
    at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96)
    at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358)
    at com.sun.proxy.$Proxy74.selectList(Unknown Source)
    at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:198)
    at com.yq.dao.DaoSupport.findForList(DaoSupport.java:118)
    at com.yq.service.category.impl.CategoryService.listAll(CategoryService.java:62)
    at com.yq.service.category.impl.CategoryService$$FastClassBySpringCGLIB$$51d95cd7.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:711)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:644)
    at com.yq.service.category.impl.CategoryService$$EnhancerBySpringCGLIB$$c2253a36.listAll(<generated>)
    at com.yq.controller.category.CategoryController.list(CategoryController.java:80)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:690)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:123)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)

CategoryMapper.xml

<?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="CategoryMapper">

    <!--表名 -->
    <sql id="tableName">
        shop_category
    </sql>

    <!-- 字段 -->
    <sql id="Field">
        category_name,  
        category_img,   
        sort,   
        category_id,
        super_id
    </sql>

    <!-- 字段值 -->
    <sql id="FieldValue">
        #{category_name},
        #{category_img},    
        #{sort},    
        #{category_id},
        #{super_id}
    </sql>

    <!-- 新增-->
    <insert id="save" parameterType="pd">
        insert into 
    <include refid="tableName"></include>
        (
    <include refid="Field"></include>
        ) values (
    <include refid="FieldValue"></include>
        )
    </insert>

    <!-- 删除-->
    <delete id="delete" parameterType="pd">
        delete from
        <include refid="tableName"></include>
        where 
            category_id = #{category_id}
    </delete>

    <!-- 修改 -->
    <update id="edit" parameterType="pd">
        update
        <include refid="tableName"></include>
        set 
            category_name = #{category_name},
            category_img = #{category_img},
            sort = #{sort}
        where 
        category_id = #{category_id}
    </update>

    <!-- 通过ID获取数据 -->
    <select id="findById" parameterType="pd" resultType="pd">
        select 
        <include refid="Field"></include>
        from 
        <include refid="tableName"></include>
        where 
        category_id = #{category_id}
    </select>

    <!-- 列表 -->
    <select id="datalistPage" parameterType="page" resultType="pd">
        select
        <include refid="Field"></include>
        from 
        <include refid="tableName"></include>
        where 1=1 
        and
        super_id =#{pd.super_id}
        order by sort
    </select>

    <!-- 列表(全部) -->
    <select id="listAll" parameterType="pd" resultType="pd">
        select
        <include refid="Field"></include>
        from 
        <include refid="tableName"></include>
        where

        super_id =#{super_id}
        order by sort
    </select>

    <!-- 批量删除 -->
    <delete id="deleteAll" parameterType="String">
        delete from
        <include refid="tableName"></include>
        where 
            category_id in
        <foreach item="item" index="index" collection="array" open="(" separator="," close=")">
                 #{item}
        </foreach>
    </delete>

</mapper>

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD SQL Map Config 3.0//EN"  
    "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

    <settings> 
        <setting name="cacheEnabled" value="true" /><!-- 全局映射器启用缓存 -->   
        <setting name="useGeneratedKeys" value="true" /> 
        <setting name="defaultExecutorType" value="REUSE" /> 
        <!-- 打印查询语句 -->  
        <setting name="logImpl" value="LOG4J" />  

    </settings>

    <typeAliases>
        <typeAlias type="org.change.entity.system.User" alias="User"/>
        <typeAlias type="org.change.entity.system.Role" alias="Role"/>
        <typeAlias type="org.change.entity.system.Menu" alias="Menu"/>
        <typeAlias type="org.change.entity.system.Dictionaries" alias="Dictionaries"/>
        <typeAlias type="org.change.entity.system.Department" alias="Department"/>
        <typeAlias type="org.change.util.PageData" alias="pd"/>
        <!-- 分页 -->
        <typeAlias type="org.change.entity.Page" alias="Page"/>
    </typeAliases>

    <plugins>
        <plugin interceptor="org.change.plugin.PagePlugin">
            <property name="dialect" value="mysql"/>
            <property name="pageSqlId" value=".*listPage.*"/>
        </plugin>
    </plugins>

</configuration>

DAO.java

public interface DAO {

    /**
     * 保存对象
     * @param str
     * @param obj
     * @return
     * @throws Exception
     */
    public Object save(String str, Object obj) throws Exception;

    /**
     * 修改对象
     * @param str
     * @param obj
     * @return
     * @throws Exception
     */
    public Object update(String str, Object obj) throws Exception;

    /**
     * 删除对象 
     * @param str
     * @param obj
     * @return
     * @throws Exception
     */
    public Object delete(String str, Object obj) throws Exception;

    /**
     * 查找对象
     * @param str
     * @param obj
     * @return
     * @throws Exception
     */
    public Object findForObject(String str, Object obj) throws Exception;

    /**
     * 查找对象
     * @param str
     * @param obj
     * @return
     * @throws Exception
     */
    public Object findForList(String str, Object obj) throws Exception;

    /**
     * 查找对象封装成Map
     * @param s
     * @param obj
     * @return
     * @throws Exception
     */
    public Object findForMap(String sql, Object obj, String key , String value) throws Exception;

}

DaoSupport.java

@Repository("daoSupport")
public class DaoSupport implements DAO {

    @Resource(name = "sqlSessionTemplate")
    private SqlSessionTemplate sqlSessionTemplate;

    /**
     * 保存对象
     * @param str
     * @param obj
     * @return
     * @throws Exception
     */
    public Object save(String str, Object obj) throws Exception {
        return sqlSessionTemplate.insert(str, obj);
    }

    /**
     * 批量更新
     * @param str
     * @param obj
     * @return
     * @throws Exception
     */
    public Object batchSave(String str, List objs )throws Exception{
        return sqlSessionTemplate.insert(str, objs);
    }

    /**
     * 修改对象
     * @param str
     * @param obj
     * @return
     * @throws Exception
     */
    public Object update(String str, Object obj) throws Exception {
        return sqlSessionTemplate.update(str, obj);
    }

    /**
     * 批量更新
     * @param str
     * @param obj
     * @return
     * @throws Exception
     */
    public void batchUpdate(String str, List objs )throws Exception{
        SqlSessionFactory sqlSessionFactory = sqlSessionTemplate.getSqlSessionFactory();
        //批量执行器
        SqlSession sqlSession = sqlSessionFactory.openSession(ExecutorType.BATCH,false);
        try{
            if(objs!=null){
                for(int i=0,size=objs.size();i<size;i++){
                    sqlSession.update(str, objs.get(i));
                }
                sqlSession.flushStatements();
                sqlSession.commit();
                sqlSession.clearCache();
            }
        }finally{
            sqlSession.close();
        }
    }

    /**
     * 批量更新
     * @param str
     * @param obj
     * @return
     * @throws Exception
     */
    public Object batchDelete(String str, List objs )throws Exception{
        return sqlSessionTemplate.delete(str, objs);
    }

    /**
     * 删除对象 
     * @param str
     * @param obj
     * @return
     * @throws Exception
     */
    public Object delete(String str, Object obj) throws Exception {
        return sqlSessionTemplate.delete(str, obj);
    }

    /**
     * 查找对象
     * @param str
     * @param obj
     * @return
     * @throws Exception
     */
    public Object findForObject(String str, Object obj) throws Exception {
        return sqlSessionTemplate.selectOne(str, obj);
    }

    /**
     * 查找对象
     * @param str
     * @param obj
     * @return
     * @throws Exception
     */
    public Object findForList(String str, Object obj) throws Exception {
        return sqlSessionTemplate.selectList(str, obj);
    }

    public Object findForMap(String str, Object obj, String key, String value) throws Exception {
        return sqlSessionTemplate.selectMap(str, obj, key);
    }

}

spring.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: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.xsd
                        http://www.springframework.org/schema/aop 
                        http://www.springframework.org/schema/aop/spring-aop.xsd
                        http://www.springframework.org/schema/context 
                        http://www.springframework.org/schema/context/spring-context.xsd
                        http://www.springframework.org/schema/tx 
                        http://www.springframework.org/schema/tx/spring-tx.xsd
    ">



    <!-- 配置事务管理器 -->
    <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">   
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
        <property name="location" value="classpath:jdbc.properties"/>  
    </bean> 

    <!-- 阿里 druid数据库连接池 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">  
         <!-- 数据库基本信息配置 -->
         <property name="driverClassName" value="${driverClassName}" />  
         <property name="url" value="${url}" />  
         <property name="username" value="${username}" />  
         <property name="password" value="${password}" />  
         <property name="filters" value="${filters}" />  
         <!-- 最大并发连接数 -->
         <property name="maxActive" value="${maxActive}" />
         <!-- 初始化连接数量 -->
         <property name="initialSize" value="${initialSize}" />
         <!-- 配置获取连接等待超时的时间 -->
         <property name="maxWait" value="${maxWait}" />
         <!-- 最小空闲连接数 -->
         <property name="minIdle" value="${minIdle}" />  
         <!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 -->
         <property name="timeBetweenEvictionRunsMillis" value="${timeBetweenEvictionRunsMillis}" />
         <!-- 配置一个连接在池中最小生存的时间,单位是毫秒 -->
         <property name="minEvictableIdleTimeMillis" value="${minEvictableIdleTimeMillis}" />  
         <property name="validationQuery" value="${validationQuery}" />  
         <property name="testWhileIdle" value="${testWhileIdle}" />  
         <property name="testOnBorrow" value="${testOnBorrow}" />  
         <property name="testOnReturn" value="${testOnReturn}" />  
         <property name="maxOpenPreparedStatements" value="${maxOpenPreparedStatements}" />
         <!-- 打开removeAbandoned功能 -->
         <property name="removeAbandoned" value="${removeAbandoned}" />
         <!-- 1800秒,也就是30分钟 -->
         <property name="removeAbandonedTimeout" value="${removeAbandonedTimeout}" />
         <!-- 关闭abanded连接时输出错误日志 -->   
         <property name="logAbandoned" value="${logAbandoned}" />
    </bean>  

    <!-- 启用注解 -->
    <context:annotation-config />

    <!-- 启动组件扫描,排除@Controller组件,该组件由SpringMVC配置文件扫描 -->
    <context:component-scan base-package="com">
        <context:exclude-filter type="annotation"
            expression="org.springframework.stereotype.Controller" />
    </context:component-scan>

    <!-- 注解方式配置事务-->
    <!-- <tx:annotation-driven transaction-manager="transactionManager" />   -->
    <!-- 拦截器方式配置事务 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="delete*" propagation="REQUIRED" read-only="false" 
                       rollback-for="java.lang.Exception"/>
            <tx:method name="insert*" propagation="REQUIRED" read-only="false" 
                       rollback-for="java.lang.Exception" />
            <tx:method name="update*" propagation="REQUIRED" read-only="false" 
                       rollback-for="java.lang.Exception" />
            <tx:method name="save*" propagation="REQUIRED" read-only="false" 
                       rollback-for="java.lang.Exception" />
            <tx:method name="*" propagation="SUPPORTS"/>            
        </tx:attributes>
    </tx:advice> 

    <aop:aspectj-autoproxy proxy-target-class="true"/>

    <!-- 事物处理 -->
    <aop:config>
        <aop:pointcut id="pc" expression="execution(* com.*.service..*(..))" />
        <aop:advisor pointcut-ref="pc" advice-ref="txAdvice" />
    </aop:config>

    <!-- 配置mybatis -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <!-- mapper扫描 -->
        <property name="mapperLocations" value="classpath:mybatis/*/*.xml"></property>
    </bean>

    <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg ref="sqlSessionFactory" />
    </bean>


</beans>

2个回答

super_id 这个值为 null 吧 ; 在mybatis的配置文件中 添加一下

<setting name="jdbcTypeForNull" value="NULL"/>
``` ,
在 #{super_id} 中添加一个和表字段匹配的jdbcType 例如 #{super_id,jdbcType=VARCHAR} ; 如果用的是 对象.属性 的形式 , 要注意对象本身不能是 null

查询结果为空,导致的空指针异常

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求助java学习过程中使用mybatis时遇到异常报错PersistenceException

异常错误信息是 ``` Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.lang.NullPointerException ### The error may exist in com/briup/estore/dao/CustomerMapper.xml ### The error may involve com.briup.estore.dao.ICustomerDao.findByName ### The error occurred while executing a query ### Cause: java.lang.NullPointerException at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:122) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:113) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:73) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:69) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:53) at com.sun.proxy.$Proxy0.findByName(Unknown Source) at com.briup.estore.service.impl.Test.main(Test.java:21) Caused by: java.lang.NullPointerException at java.lang.String.<init>(Unknown Source) at oracle.sql.CharacterSet.AL32UTF8ToString(CharacterSet.java:1518) at oracle.jdbc.driver.DBConversion.CharBytesToString(DBConversion.java:610) at oracle.jdbc.driver.DBConversion.CharBytesToString(DBConversion.java:555) at oracle.jdbc.driver.T4CTTIoauthenticate.receiveOauth(T4CTTIoauthenticate.java:822) at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:362) at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:441) at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165) at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35) at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801) at java.sql.DriverManager.getConnection(Unknown Source) at java.sql.DriverManager.getConnection(Unknown Source) at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.doGetConnection(UnpooledDataSource.java:201) at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.doGetConnection(UnpooledDataSource.java:196) at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.getConnection(UnpooledDataSource.java:93) at org.apache.ibatis.datasource.pooled.PooledDataSource.popConnection(PooledDataSource.java:385) at org.apache.ibatis.datasource.pooled.PooledDataSource.getConnection(PooledDataSource.java:89) at org.apache.ibatis.transaction.jdbc.JdbcTransaction.openConnection(JdbcTransaction.java:140) at org.apache.ibatis.transaction.jdbc.JdbcTransaction.getConnection(JdbcTransaction.java:62) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:315) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:75) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:61) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:303) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:154) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:102) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:82) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:120) ... 6 more ``` 我使用的mybatis-config.xml和mapper.xml中的代码都没有问题,我把原代码打包都放入他人电脑中运行都能成功,而我的不行,会报上述异常,数据库用的是Oracle 10g ,编译代码的是eclipse 4.7,Oracle使用cmd命令可以使用,但是就是用mybatis的不行,有没有大佬知道这种情况的,求帮助

使用MyBatis时报错,求解?

org.apache.ibatis.exceptions.PersistenceException: ### Error building SqlSession. ### The error may exist in me/pacl/mapping/userMapper.xml ### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'me.gacl.domain.User'. Cause: java.lang.ClassNotFoundException: Cannot find class: me.gacl.domain.User at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:82) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:66) at me.pacl.test.MyBatisUtil.getSqlSessionFactory(MyBatisUtil.java:19) at me.pacl.test.MyBatisUtil.getSqlSession(MyBatisUtil.java:41) at me.pacl.test.TestCRUDBXmlMapper.testAdd(TestCRUDBXmlMapper.java:13) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) at org.junit.runners.ParentRunner.run(ParentRunner.java:236) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'me.gacl.domain.User'. Cause: java.lang.ClassNotFoundException: Cannot find class: me.gacl.domain.User at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:115) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:95) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:80) ... 27 more Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'me.gacl.domain.User'. Cause: java.lang.ClassNotFoundException: Cannot find class: me.gacl.domain.User at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:120) at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92) at org.apache.ibatis.builder.xml.XMLConfigBuilder.mapperElement(XMLConfigBuilder.java:340) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:113) ... 29 more Caused by: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'me.gacl.domain.User'. Cause: java.lang.ClassNotFoundException: Cannot find class: me.gacl.domain.User at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:118) at org.apache.ibatis.builder.xml.XMLStatementBuilder.parseStatementNode(XMLStatementBuilder.java:68) at org.apache.ibatis.builder.xml.XMLMapperBuilder.buildStatementFromContext(XMLMapperBuilder.java:135) at org.apache.ibatis.builder.xml.XMLMapperBuilder.buildStatementFromContext(XMLMapperBuilder.java:128) at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:118) ... 32 more Caused by: org.apache.ibatis.type.TypeException: Could not resolve type alias 'me.gacl.domain.User'. Cause: java.lang.ClassNotFoundException: Cannot find class: me.gacl.domain.User at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:120) at org.apache.ibatis.builder.BaseBuilder.resolveAlias(BaseBuilder.java:149) at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:116) ... 36 more Caused by: java.lang.ClassNotFoundException: Cannot find class: me.gacl.domain.User at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:200) at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:89) at org.apache.ibatis.io.Resources.classForName(Resources.java:261) at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:116) ... 38 more

Could not get JDBC Connection

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.microsoft.sqlserver.jdbc.SQLServerDriver' ### The error may exist in cn/drzk/wanda/cinema/dao/form/dao/TicketsFromDao.java (best guess) ### The error may involve cn.drzk.wanda.cinema.dao.form.dao.TicketsFromDao.count ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.microsoft.sqlserver.jdbc.SQLServerDriver'

数据库连不上求助,请问该从哪几方面改呢

HTTP ERROR 404 Problem accessing /gfhj/Jsp/errorPages/error.jsp. Reason:     NOT_FOUND Caused by: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:  ### Error updating database.  Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user 'root'@'localhost' (using password: YES)) ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user 'root'@'localhost' (using password: YES)) at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:364) at com.sun.proxy.$Proxy7.insert(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:236) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:46) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:43) at com.sun.proxy.$Proxy13.adduser(Unknown Source) at com.jiujiu.ssl.user.service.Test_UserService.adduser(Test_UserService.java:17) at com.jiujiu.ssl.user.web.Test_UserContorller.adduser(Test_UserContorller.java:39)

Mybatis 运行出错

org.apache.ibatis.exceptions.PersistenceException: ### Error building SqlSession. ### Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: java.io.FileNotFoundException: http://www.mybatis.org/dtd/mybatis-3-congig.dtd at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:82) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:66) at test.UserMapperTest.test(UserMapperTest.java:24) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:389) at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:115) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:167) at org.junit.jupiter.engine.execution.ThrowableCollector.execute(ThrowableCollector.java:40) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:163) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:110) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$execute$3(HierarchicalTestExecutor.java:83) at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:77) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$null$2(HierarchicalTestExecutor.java:92) at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$execute$3(HierarchicalTestExecutor.java:92) at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:77) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$null$2(HierarchicalTestExecutor.java:92) at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$execute$3(HierarchicalTestExecutor.java:92) at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:77) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:51) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:43) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:170) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:154) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:90) at org.eclipse.jdt.internal.junit5.runner.JUnit5TestReference.run(JUnit5TestReference.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: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: java.io.FileNotFoundException: http://www.mybatis.org/dtd/mybatis-3-congig.dtd at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:259) at org.apache.ibatis.parsing.XPathParser.<init>(XPathParser.java:125) at org.apache.ibatis.builder.xml.XMLConfigBuilder.<init>(XMLConfigBuilder.java:78) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:79) ... 55 more Caused by: java.io.FileNotFoundException: http://www.mybatis.org/dtd/mybatis-3-congig.dtd at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1836) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1441) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:647) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startEntity(XMLEntityManager.java:1305) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startDTDEntity(XMLEntityManager.java:1271) at com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl.setInputSource(XMLDTDScannerImpl.java:263) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.dispatch(XMLDocumentScannerImpl.java:1167) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.next(XMLDocumentScannerImpl.java:1050) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:964) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141) at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243) at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339) at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:257) ... 58 more ![图片说明](https://img-ask.csdn.net/upload/201903/15/1552633871_158992.jpg)

mybatis mapper配置错误

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <configuration> <mapper namespace="test"> <select id="findUserById" parameterType="int" resultType="com.nullException.mybatis.po.User"> select * from user where id = #{id} </select> </mapper> 以上是我的mapper的xml配置文件 然后测试的时候报错 报错信息为: org.apache.ibatis.exceptions.PersistenceException: ### Error building SqlSession. ### The error may exist in sqlmap/User.xml ### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 7; columnNumber: 26; 必须为元素类型 "mapper" 声明属性 "namespace"。 at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:26) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:82) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:66) at com.nullException.mybatis.first.MybatisFirst.init(MybatisFirst.java:22) at com.nullException.mybatis.first.Test.main(Test.java:8) Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 7; columnNumber: 26; 必须为元素类型 "mapper" 声明属性 "namespace"。 at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:109) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:92) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:80) ... 3 more 初学者,问题可能很白痴,有了解的大神帮忙看一下哈

这是关于什么方面错误?求解答

Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: ### Error building SqlSession. ### Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 15; columnNumber: 36; 与元素类型 "value" 相关联的属性 "{1}" 应有左引号。 at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:79) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:63) at com.zxy.test.TestMyBatis.main(TestMyBatis.java:18) Caused by: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 15; columnNumber: 36; 与元素类型 "value" 相关联的属性 "{1}" 应有左引号。 at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:253) at org.apache.ibatis.parsing.XPathParser.<init>(XPathParser.java:122) at org.apache.ibatis.builder.xml.XMLConfigBuilder.<init>(XMLConfigBuilder.java:72) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:76) ... 2 more Caused by: org.xml.sax.SAXParseException; lineNumber: 15; columnNumber: 36; 与元素类型 "value" 相关联的属性 "{1}" 应有左引号。 at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:198) at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177) at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:441) at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368) at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1375) at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanAttributeValue(XMLScanner.java:768) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanAttribute(XMLDocumentFragmentScannerImpl.java:1506) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1279) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2715) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:488) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123) at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:240) at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:300) at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:251) ... 5 more

mybatis配置问题(应该是路径问题)

**工程目录结构如图**![图片说明](https://img-ask.csdn.net/upload/201704/26/1493178209_211620.jpg) **mapper映射如下** ``` <?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="UsersMapper"> <select id="selectUser" resultType="bean.Users"> select * from users where userID = #{id} </select> </mapper> ``` **配置文件如下** ``` <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <environments default="development"> <environment id="development"> <transactionManager type="JDBC" /> <dataSource type="POOLED"> <property name="user" value="root"></property> <property name="password" value="1995"></property> <property name="driverClass" value="com.mysql.jdbc.Driver"></property> <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/hibernate?characterEncoding=utf8&amp;serverTimezone=UTC"></property> </dataSource> </environment> </environments> <mappers> <mapper resource="UsersMapper.xml" /> </mappers> </configuration> ``` **junit测试类** ``` @Test public void test() throws IOException { String resource = "mybatis-config.xml"; InputStream inputStream = Resources.getResourceAsStream(resource); SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream) ; SqlSession session = sqlSessionFactory.openSession(); try { Users user = session.selectOne("UsersMapper.selectUser", 1); System.out.println(user); } finally { session.close(); } } ``` **错误信息如下** org.apache.ibatis.exceptions.PersistenceException: ### Error building SqlSession. ### The error may exist in SQL Mapper Configuration ### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.datasource.DataSourceException: Unknown DataSource property: driverClass at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:80) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:64) at main.MybatisTest.test(MybatisTest.java:24) 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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) 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.junit.runners.ParentRunner.run(ParentRunner.java:363) 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:459) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.datasource.DataSourceException: Unknown DataSource property: driverClass at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:120) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:98) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:78) ... 25 more Caused by: org.apache.ibatis.datasource.DataSourceException: Unknown DataSource property: driverClass at org.apache.ibatis.datasource.unpooled.UnpooledDataSourceFactory.setProperties(UnpooledDataSourceFactory.java:55) at org.apache.ibatis.builder.xml.XMLConfigBuilder.dataSourceElement(XMLConfigBuilder.java:321) at org.apache.ibatis.builder.xml.XMLConfigBuilder.environmentsElement(XMLConfigBuilder.java:275) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:115) ... 27 more

mybatis 报ExecutorException: Executor was closed.

在同一个方法里面,有两步update数据库操作,分别是库中的两张表,但这两步是一个完整事务,第一步update成功了,第二步就报了这个错误 请高手帮忙看下,可能是什么原因? 报错如下: Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error updating database. C ause: org.apache.ibatis.executor.ExecutorException: Executor was closed. ### The error may exist in file [/export/App/transfer.support.ws.aa.com/WEB-INF/classes/mapper/order/Order.xml] ### The error may involve com.aa.bb.ts.support.server.dao.mapper.OrderMapper.updateOrderById ### The error occurred while executing an update ### Cause: org.apache.ibatis.executor.ExecutorException: Executor was closed. at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23) at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:147) 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 com.aa.bb.common.db.mybaties.SqlSessionInterceptor.doInvoke(SqlSessionInterceptor.java:204) at com.aa.bb.common.db.mybaties.SqlSessionInterceptor.invoke(SqlSessionInterceptor.java:173) at $Proxy39.update(Unknown Source) at com.aa.bb.common.db.mybaties.SqlSessionTemplate.update(SqlSessionTemplate.java:147) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:82) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40) at $Proxy42.updateOrderById(Unknown Source) at com.aa.bb.ts.support.server.core.service.impl.OrderAndDetailServiceImpl.updateOrderById(OrderAndDetailServiceImpl.java:134) 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.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:196) at $Proxy45.updateOrderById(Unknown Source) at com.aa.bb.ts.support.server.core.service.impl.AntiAndOrderServiceImpl.cancelAntiAndOrderById(AntiAndOrderServiceImpl.java:131) ... 39 more Caused by: org.apache.ibatis.executor.ExecutorException: Executor was closed. at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:106) at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:145) ... 59 more

异常org.mybatis.spring.MyBatisSystemException:

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for InvestorMapper.listInvestor ### Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for InvestorMapper.listInvestor at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:364) at $Proxy5.selectList(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:194) at models.Dao.findForList(Dao.java:148) at controllers.BusiTzNetvalController.listInvestor(BusiTzNetvalController.java:33) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at play.mvc.ActionInvoker.invokeWithContinuation(ActionInvoker.java:546) at play.mvc.ActionInvoker.invoke(ActionInvoker.java:500) at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:476) at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:471) at play.mvc.ActionInvoker.invoke(ActionInvoker.java:159) at play.server.PlayHandler$NettyInvocation.execute(PlayHandler.java:220) at play.Invoker$Invocation.run(Invoker.java:265) at play.server.PlayHandler$NettyInvocation.run(PlayHandler.java:200) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:207) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for InvestorMapper.listInvestor ### Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for InvestorMapper.listInvestor at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:107) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:98) 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.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:354) ... 24 more Caused by: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for InvestorMapper.listInvestor at org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:768) at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:603) at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:596) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:103) ... 30 more

mybatis代码一样却报错

正确的 test="volume!=null and vloume!=' '" 错误的 test="volume!=null and volume!=' '" 第一段代码没有问题 然后带二段代码写上去就报错 ``` <select id="alist" parameterType="hashmap" resultType="android"> select * from Android where 1=1 <if test="version!=null and version!=' '"> and version>#{version} </if> <if test="volume!=null and vloume!=' '"> and volume like "${volume}%"; </if> </select> <select id="ddlist" parameterType="hashmap" resultType="Android"> select * from Android <where> <if test="version!=null and version!=' '"> and version>#{version} </if> <if test="volume!=null and volume!=' '"> and volume like "${volume}%"; </if> </where> </select> ``` 控制台报错代码 ``` log4j:WARN No appenders could be found for logger (org.apache.ibatis.logging.LogFactory). log4j:WARN Please initialize the log4j system properly. log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info. Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.lang.NumberFormatException: For input string: "十" ### Cause: java.lang.NumberFormatException: For input string: "十" at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:26) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:111) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:119) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:63) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52) at $Proxy0.alist(Unknown Source) at com.hy.am.test.Select1.main(Select1.java:28) Caused by: java.lang.NumberFormatException: For input string: "十" at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1224) at java.lang.Double.parseDouble(Double.java:510) at org.apache.ibatis.ognl.OgnlOps.doubleValue(OgnlOps.java:259) at org.apache.ibatis.ognl.OgnlOps.compareWithConversion(OgnlOps.java:143) at org.apache.ibatis.ognl.OgnlOps.isEqual(OgnlOps.java:186) at org.apache.ibatis.ognl.OgnlOps.equal(OgnlOps.java:578) at org.apache.ibatis.ognl.ASTNotEq.getValueBody(ASTNotEq.java:51) at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170) at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:210) at org.apache.ibatis.ognl.ASTAnd.getValueBody(ASTAnd.java:56) at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170) at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:210) at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:333) at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:413) at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:395) at org.apache.ibatis.scripting.xmltags.OgnlCache.getValue(OgnlCache.java:48) at org.apache.ibatis.scripting.xmltags.ExpressionEvaluator.evaluateBoolean(ExpressionEvaluator.java:32) at org.apache.ibatis.scripting.xmltags.IfSqlNode.apply(IfSqlNode.java:33) at org.apache.ibatis.scripting.xmltags.MixedSqlNode.apply(MixedSqlNode.java:32) at org.apache.ibatis.scripting.xmltags.DynamicSqlSource.getBoundSql(DynamicSqlSource.java:40) at org.apache.ibatis.mapping.MappedStatement.getBoundSql(MappedStatement.java:278) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:75) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108) ... 6 more ``` 有没有大佬清楚这个是什么原因啊

请教一下,到底我的mapper.xml哪里出错了,弄不明白为什么找不到我写的log类

## update一下经大佬提点后如何解决的 可能因为我曾用粗暴的方法改动过Log.java的类名,导致Log类编译出问题了,编译后类文件夹内根本没有Log.class文件。于是我又粗暴地delete了Log类重写了一次,果然没问题了。 顺便百度了一下如何修改类名 https://zhidao.baidu.com/question/340215163.html ## 原问题如下 小白入门程序媛,这个是一个mybatis的关于银行转账的小练习 在写log部分之前,我写的account部分测试过是没有问题的,转账的业务也成功了的。现在是想增加一个记录日志的操作,在数据库log表格添加转账记录,并且利用log4j在硬盘生成log file中记录转账信息。 可是按照同样的套路写了了log实体类后再写logmapper.xml,却出现了以下的错误,后来干脆连mybatis中的别名的部分都去掉了,直接在mapper.xml中使用完整的类名,还是说找不到我写的log类。实在搞不懂是namespace出错了还是怎么滴。。。。 ## 错误信息如下: ``` 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server version: Apache Tomcat/8.5.42 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server built: Jun 4 2019 20:29:04 UTC 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server number: 8.5.42.0 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: OS Name: Windows 10 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: OS Version: 10.0 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Architecture: amd64 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Java Home: C:\Program Files\Java\jdk1.8.0_201\jre 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: JVM Version: 1.8.0_201-b09 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: JVM Vendor: Oracle Corporation 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: CATALINA_BASE: D:\eclipse-workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: CATALINA_HOME: D:\apache-tomcat-8.5.42 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dcatalina.base=D:\eclipse-workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dcatalina.home=D:\apache-tomcat-8.5.42 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dwtp.deploy=D:\eclipse-workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Djava.endorsed.dirs=D:\apache-tomcat-8.5.42\endorsed 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dfile.encoding=UTF-8 七月 13, 2019 8:47:00 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: Loaded APR based Apache Tomcat Native library [1.2.21] using APR version [1.6.5]. 七月 13, 2019 8:47:00 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true]. 七月 13, 2019 8:47:00 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true] 七月 13, 2019 8:47:00 下午 org.apache.catalina.core.AprLifecycleListener initializeSSL 信息: OpenSSL successfully initialized [OpenSSL 1.1.1a 20 Nov 2018] 七月 13, 2019 8:47:00 下午 org.apache.coyote.AbstractProtocol init 信息: Initializing ProtocolHandler ["http-nio-8080"] 七月 13, 2019 8:47:00 下午 org.apache.tomcat.util.net.NioSelectorPool getSharedSelector 信息: Using a shared selector for servlet write/read 七月 13, 2019 8:47:00 下午 org.apache.coyote.AbstractProtocol init 信息: Initializing ProtocolHandler ["ajp-nio-8009"] 七月 13, 2019 8:47:00 下午 org.apache.tomcat.util.net.NioSelectorPool getSharedSelector 信息: Using a shared selector for servlet write/read 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.Catalina load 信息: Initialization processed in 828 ms 七月 13, 2019 8:47:00 下午 org.apache.catalina.core.StandardService startInternal 信息: Starting service [Catalina] 七月 13, 2019 8:47:00 下午 org.apache.catalina.core.StandardEngine startInternal 信息: Starting Servlet Engine: Apache Tomcat/8.5.42 七月 13, 2019 8:47:01 下午 org.apache.jasper.servlet.TldScanner scanJars 信息: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. 七月 13, 2019 8:47:02 下午 org.apache.coyote.AbstractProtocol start 信息: Starting ProtocolHandler ["http-nio-8080"] 七月 13, 2019 8:47:02 下午 org.apache.coyote.AbstractProtocol start 信息: Starting ProtocolHandler ["ajp-nio-8009"] 七月 13, 2019 8:47:02 下午 org.apache.catalina.startup.Catalina start 信息: Server startup in 1377 ms 七月 13, 2019 8:47:32 下午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet [yan.ibbie.servlet.TransferServlet] in context with path [/bank] threw exception org.apache.ibatis.exceptions.PersistenceException: ### Error building SqlSession. ### The error may exist in yan/ibbie/mapper/logmapper.xml ### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'yan/ibbie/mapper/logmapper.xml'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'yan.ibbie.pojo.Log'. Cause: java.lang.ClassNotFoundException: Cannot find class: yan.ibbie.pojo.Log at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:80) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:64) at yan.ibbie.service.Impl.AccountServiceImpl.transfer(AccountServiceImpl.java:23) at yan.ibbie.servlet.TransferServlet.service(TransferServlet.java:36) 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:493) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:660) 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$ConnectionHandler.process(AbstractProtocol.java:808) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498) 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) Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'yan/ibbie/mapper/logmapper.xml'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'yan.ibbie.pojo.Log'. Cause: java.lang.ClassNotFoundException: Cannot find class: yan.ibbie.pojo.Log at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:121) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:99) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:78) ... 26 more Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'yan/ibbie/mapper/logmapper.xml'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'yan.ibbie.pojo.Log'. Cause: java.lang.ClassNotFoundException: Cannot find class: yan.ibbie.pojo.Log at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:120) at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92) at org.apache.ibatis.builder.xml.XMLConfigBuilder.mapperElement(XMLConfigBuilder.java:373) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:119) ... 28 more Caused by: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'yan.ibbie.pojo.Log'. Cause: java.lang.ClassNotFoundException: Cannot find class: yan.ibbie.pojo.Log at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:118) at org.apache.ibatis.builder.xml.XMLStatementBuilder.parseStatementNode(XMLStatementBuilder.java:68) at org.apache.ibatis.builder.xml.XMLMapperBuilder.buildStatementFromContext(XMLMapperBuilder.java:135) at org.apache.ibatis.builder.xml.XMLMapperBuilder.buildStatementFromContext(XMLMapperBuilder.java:128) at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:118) ... 31 more Caused by: org.apache.ibatis.type.TypeException: Could not resolve type alias 'yan.ibbie.pojo.Log'. Cause: java.lang.ClassNotFoundException: Cannot find class: yan.ibbie.pojo.Log at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:120) at org.apache.ibatis.builder.BaseBuilder.resolveAlias(BaseBuilder.java:149) at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:116) ... 35 more Caused by: java.lang.ClassNotFoundException: Cannot find class: yan.ibbie.pojo.Log at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:200) at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:89) at org.apache.ibatis.io.Resources.classForName(Resources.java:261) at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:116) ... 37 more ``` ## mybatis.xml如下: ``` <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <settings> <setting name="logImpl" value="LOG4J"/> </settings> <!-- default填默认使用的environment的id --> <environments default="default"> <!-- environment标签声明一个环境 --> <environment id="default"> <!-- type="JDBC"表示使用原生JDBC事务 --> <transactionManager type="JDBC"></transactionManager> <dataSource type="POOLED"> <property name="driver" value="com.mysql.cj.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/ssm?serverTimezone=GMT%2B8"/> <property name="username" value="root"/> <property name="password" value="1233210"/> </dataSource> </environment> </environments> <mappers> <mapper resource="yan/ibbie/mapper/accountmapper.xml"/> <mapper resource="yan/ibbie/mapper/logmapper.xml"/> </mappers> </configuration> ``` ## accountmapper.xml如下: ``` <?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="yan.ibbie.mapper.accountmapper"> <!-- 根据账号和密码查询账户信息 --> <select id="selByAccnoPassword" resultType="yan.ibbie.pojo.Account" parameterType="yan.ibbie.pojo.Account"> select * from account where accno=#{accNo} and password=#{password} </select> <!-- 根据账号和姓名查询账户信息 --> <select id="selByAccnoName" resultType="yan.ibbie.pojo.Account" parameterType="yan.ibbie.pojo.Account"> select * from account where accno=#{accNo} and name=#{name} </select> <!-- 根据账号修改账户余额 --> <update id="updBalanceByAccno" parameterType="yan.ibbie.pojo.Account"> update account set balance=balance+#{balance} where accno=#{accNo} </update> </mapper> ``` ## logmapper.xml如下: ``` <?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="yan.ibbie.mapper.logmapper"> <insert id="insLog" parameterType="yan.ibbie.pojo.Log"> insert into log values(default,#{accOut},#{accIn},#{money}) </insert> </mapper> ``` ## yan.ibbie.pojo.log如下 ``` package yan.ibbie.pojo; public class Log { private int id; private String accOut; private String accIn; private double money; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getAccOut() { return accOut; } public void setAccOut(String accOut) { this.accOut = accOut; } public String getAccIn() { return accIn; } public void setAccIn(String accIn) { this.accIn = accIn; } public double getMoney() { return money; } public void setMoney(double money) { this.money = money; } } ``` ## AccountServiceImpl如下: ``` package yan.ibbie.service.Impl; import java.io.IOException; import java.io.InputStream; import java.util.Date; import org.apache.ibatis.io.Resources; import org.apache.ibatis.session.SqlSession; import org.apache.ibatis.session.SqlSessionFactory; import org.apache.ibatis.session.SqlSessionFactoryBuilder; import com.sun.istack.internal.logging.Logger; import yan.ibbie.pojo.Account; import yan.ibbie.pojo.Log; import yan.ibbie.service.AccountService; public class AccountServiceImpl implements AccountService { @Override public int transfer(Account accIn, Account accOut) throws IOException { InputStream is = Resources.getResourceAsStream("mybatis.xml"); SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(is); SqlSession session = factory.openSession(); Account accOutSelect = session.selectOne("yan.ibbie.mapper.accountmapper.selByAccnoPassword",accOut); if (accOutSelect!=null) { if(accOutSelect.getBalance()>=accOut.getBalance()) { Account accInSelect = session.selectOne("yan.ibbie.mapper.accountmapper.selByAccnoName",accIn); if (accInSelect!=null) { accIn.setBalance(accOut.getBalance()); accOut.setBalance(-accOut.getBalance()); int index=session.update("yan.ibbie.mapper.accountmapper.updBalanceByAccno", accOut); index += session.update("yan.ibbie.mapper.accountmapper.updBalanceByAccno",accIn); if (index==2) { Log log = new Log(); log.setAccOut(accOut.getAccNo()); log.setAccIn(accIn.getAccNo()); log.setMoney(accIn.getBalance()); session.update("yan.ibbie.mapper.logmapper.insLog", log); Logger logger = Logger.getLogger(AccountServiceImpl.class); logger.info(log.getAccOut()+"给"+log.getAccIn()+ "在"+new Date().toLocaleString()+"转了"+log.getMoney()); session.commit(); session.close(); return SUCCESS; }else { session.rollback(); session.close(); return ERROR; } }else { return ACCOUNT_NAME_NOT_MATCH; } }else { return ACCOUNT_BALANCE_NOT_ENOUGHT; } }else { return ACCOUNT_PASSWORD_NOT_MATCH; } } } ```

Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection

问题描述: 应用程序部署后运行正常,运行一段时间后,调用某个服务后,就出现如下的报错,重启后又正常 ``` 2019-09-25 17:11:17.686 ERROR 2072 --- [http-nio-801-exec-12] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60000, active 20, maxActive 20, creating 0 ### The error may exist in cn/stylefeng/guns/modular/mall/mapper/SetHskLevelMapper.java (best guess) ### The error may involve cn.stylefeng.guns.modular.mall.mapper.SetHskLevelMapper.selectOne ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60000, active 20, maxActive 20, creating 0] with root cause com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60000, active 20, maxActive 20, creating 0 at com.alibaba.druid.pool.DruidDataSource.getConnectionInternal(DruidDataSource.java:1536) at com.alibaba.druid.pool.DruidDataSource.getConnectionDirect(DruidDataSource.java:1272) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5007) at com.alibaba.druid.filter.stat.StatFilter.dataSource_getConnection(StatFilter.java:680) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5003) at com.alibaba.druid.filter.FilterAdapter.dataSource_getConnection(FilterAdapter.java:2745) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5003) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1250) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1242) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:89) at sun.reflect.GeneratedMethodAccessor113.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at com.alibaba.druid.support.spring.stat.DruidStatInterceptor.invoke(DruidStatInterceptor.java:72) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212) at com.sun.proxy.$Proxy93.getConnection(Unknown Source) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:82) at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:68) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:338) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:84) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:326) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83) at sun.reflect.GeneratedMethodAccessor114.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:63) at com.sun.proxy.$Proxy180.query(Unknown Source) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77) at sun.reflect.GeneratedMethodAccessor138.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) at com.sun.proxy.$Proxy97.selectOne(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:166) at com.baomidou.mybatisplus.core.override.PageMapperMethod.execute(PageMapperMethod.java:101) at com.baomidou.mybatisplus.core.override.PageMapperProxy.invoke(PageMapperProxy.java:64) at com.sun.proxy.$Proxy129.selectOne(Unknown Source) at cn.stylefeng.guns.modular.mall.service.SetHskLevelService.model(SetHskLevelService.java:25) at cn.stylefeng.guns.modular.mall.service.SetHskLevelService$$FastClassBySpringCGLIB$$5431aaeb.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at com.alibaba.druid.support.spring.stat.DruidStatInterceptor.invoke(DruidStatInterceptor.java:72) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688) at cn.stylefeng.guns.modular.mall.service.SetHskLevelService$$EnhancerBySpringCGLIB$$ead2cf8a.model(<generated>) at cn.stylefeng.guns.modular.mall.api.HskController.getHskLevel(HskController.java:1039) at cn.stylefeng.guns.modular.mall.api.HskController.getListenTotalReport(HskController.java:711) at sun.reflect.GeneratedMethodAccessor157.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:897) at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) 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:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:387) at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at cn.stylefeng.roses.core.xss.XssFilter.doFilter(XssFilter.java:31) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 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:490) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Unknown Source) ```

spring-MyBatis练习报错 求大神指导啊啊啊啊?

有的部分用直接用了老师的成品,刚开始练习一对一就报错了,在attach source里加上了mybatis的zip还是不对,UserMapper.xml里的sql语句下的username显示拼写而错误,但是可以运行,不知道怎么回事,刚开始学,求大神指导啊,非常感谢!!! OrdersMapper public interface OrdersMapper public List<OrdersExt> findOrdersAndUser(); } OrdersMapper.xml ``` <?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"> <!-- namespace:命名空间,对statement的信息进行分类管理 --> <!-- 注意:在mapper代理时,它具有特殊及重要的作用 --> <mapper namespace="com.zzr.mybatis.mapper.OrdersMapper"> <!--一对一映射语句 --> <select id="findOrdersAndUser" resultType="OrdersExt"> select orders.id, orders.user_id, orders.number, user.username, user.sex from orders,user where orders.user_id = user.id; </select> </mapper> ``` SqlSessionFactoryUtil ``` public class SqlSessionFactoryUtil { private static SqlSessionFactory sessionFactory; static { try { // 加载全局配置文件 String resource = "mybatis-config.xml"; InputStream is = Resources.getResourceAsStream(resource); // 创建sessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(is); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } // 单例模式私有构造 private SqlSessionFactoryUtil() { } // 单例模式获取sessionFactory public static SqlSessionFactory createSessionFactory() { return sessionFactory; } } ``` Test ``` public class OrdersMapperTest { private SqlSessionFactory sessionFactory; @Before public void setup(){ sessionFactory = SqlSessionFactoryUtil.createSessionFactory(); } @Test public void testFindOrdersAndUser(){ //创建session SqlSession session = this.sessionFactory.openSession(); //使用mybatis创建mapper接口的代理对象 OrdersMapper ordersMapper = session.getMapper(OrdersMapper.class); //查询订单信息,关联查询用户信息 List<OrdersExt>ordersExts = ordersMapper.findOrdersAndUser(); System.out.println(ordersExts); } } ``` 报错信息 ``` DEBUG LogFactory:135 - Logging initialized using 'class org.apache.ibatis.logging.slf4j.Slf4jImpl' adapter. DEBUG VFS:109 - Class not found: org.jboss.vfs.VFS DEBUG JBoss6VFS:142 - JBoss 6 VFS API is not available in this environment. DEBUG VFS:109 - Class not found: org.jboss.vfs.VirtualFile DEBUG VFS:70 - VFS implementation org.apache.ibatis.io.JBoss6VFS is not valid in this environment. DEBUG VFS:84 - Using VFS adapter org.apache.ibatis.io.DefaultVFS DEBUG DefaultVFS:222 - Find JAR URL: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po DEBUG DefaultVFS:248 - Not a JAR: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po DEBUG DefaultVFS:102 - Reader entry: Items.class DEBUG DefaultVFS:102 - Reader entry: Orderdetail.class DEBUG DefaultVFS:102 - Reader entry: Orders.class DEBUG DefaultVFS:102 - Reader entry: OrdersExt.class DEBUG DefaultVFS:102 - Reader entry: User.class DEBUG DefaultVFS:102 - Reader entry: UserQueryVO.class DEBUG DefaultVFS:113 - Listing file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po DEBUG DefaultVFS:222 - Find JAR URL: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po/Items.class DEBUG DefaultVFS:248 - Not a JAR: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po/Items.class DEBUG DefaultVFS:102 - Reader entry: ���� DEBUG DefaultVFS:222 - Find JAR URL: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po/Orderdetail.class DEBUG DefaultVFS:248 - Not a JAR: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po/Orderdetail.class DEBUG DefaultVFS:102 - Reader entry: ���� DEBUG DefaultVFS:222 - Find JAR URL: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po/Orders.class DEBUG DefaultVFS:248 - Not a JAR: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po/Orders.class DEBUG DefaultVFS:102 - Reader entry: ���� DEBUG DefaultVFS:222 - Find JAR URL: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po/OrdersExt.class DEBUG DefaultVFS:248 - Not a JAR: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po/OrdersExt.class DEBUG DefaultVFS:102 - Reader entry: ���� DEBUG DefaultVFS:222 - Find JAR URL: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po/User.class DEBUG DefaultVFS:248 - Not a JAR: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po/User.class DEBUG DefaultVFS:102 - Reader entry: ���� DEBUG DefaultVFS:222 - Find JAR URL: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po/UserQueryVO.class DEBUG DefaultVFS:248 - Not a JAR: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/po/UserQueryVO.class DEBUG DefaultVFS:102 - Reader entry: ���� DEBUG ResolverUtil:256 - Checking to see if class com.zzr.mybatis.po.Items matches criteria [is assignable to Object] DEBUG ResolverUtil:256 - Checking to see if class com.zzr.mybatis.po.Orderdetail matches criteria [is assignable to Object] DEBUG ResolverUtil:256 - Checking to see if class com.zzr.mybatis.po.Orders matches criteria [is assignable to Object] DEBUG ResolverUtil:256 - Checking to see if class com.zzr.mybatis.po.OrdersExt matches criteria [is assignable to Object] DEBUG ResolverUtil:256 - Checking to see if class com.zzr.mybatis.po.User matches criteria [is assignable to Object] DEBUG ResolverUtil:256 - Checking to see if class com.zzr.mybatis.po.UserQueryVO matches criteria [is assignable to Object] DEBUG LogFactory:135 - Logging initialized using 'class org.apache.ibatis.logging.log4j.Log4jImpl' adapter. DEBUG PooledDataSource:335 - PooledDataSource forcefully closed/removed all connections. DEBUG PooledDataSource:335 - PooledDataSource forcefully closed/removed all connections. DEBUG PooledDataSource:335 - PooledDataSource forcefully closed/removed all connections. DEBUG PooledDataSource:335 - PooledDataSource forcefully closed/removed all connections. DEBUG DefaultVFS:222 - Find JAR URL: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/mapper DEBUG DefaultVFS:248 - Not a JAR: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/mapper DEBUG DefaultVFS:102 - Reader entry: OrdersMapper.class DEBUG DefaultVFS:102 - Reader entry: OrdersMapper.xml DEBUG DefaultVFS:102 - Reader entry: UserMapper.class DEBUG DefaultVFS:102 - Reader entry: UserMapper.xml DEBUG DefaultVFS:113 - Listing file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/mapper DEBUG DefaultVFS:222 - Find JAR URL: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/mapper/OrdersMapper.class DEBUG DefaultVFS:248 - Not a JAR: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/mapper/OrdersMapper.class DEBUG DefaultVFS:102 - Reader entry: ���� DEBUG DefaultVFS:222 - Find JAR URL: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/mapper/OrdersMapper.xml DEBUG DefaultVFS:248 - Not a JAR: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/mapper/OrdersMapper.xml 00:45:25,274 DEBUG DefaultVFS:102 - Reader entry: <?xml version="1.0" encoding="UTF-8"?> DEBUG DefaultVFS:222 - Find JAR URL: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/mapper/UserMapper.class DEBUG DefaultVFS:248 - Not a JAR: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/mapper/UserMapper.class DEBUG DefaultVFS:102 - Reader entry: ���� DEBUG DefaultVFS:222 - Find JAR URL: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/mapper/UserMapper.xml DEBUG DefaultVFS:248 - Not a JAR: file:/D:/java_se/zzr/MyBatis002/build/classes/com/zzr/mybatis/mapper/UserMapper.xml DEBUG DefaultVFS:102 - Reader entry: <?xml version="1.0" encoding="UTF-8"?> DEBUG ResolverUtil:256 - Checking to see if class com.zzr.mybatis.mapper.OrdersMapper matches criteria [is assignable to Object] DEBUG ResolverUtil:256 - Checking to see if class com.zzr.mybatis.mapper.UserMapper matches criteria [is assignable to Object] java.lang.ExceptionInInitializerError at com.zzr.mybatis.test.OrdersMapperTest.setup(OrdersMapperTest.java:19) 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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) 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.junit.runners.ParentRunner.run(ParentRunner.java:363) 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:459) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error building SqlSession. ### The error may exist in com/zzr/mybatis/mapper/UserMapper.xml ### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'org.mybatis.caches.ehcache.EhcacheCache'. Cause: java.lang.ClassNotFoundException: Cannot find class: org.mybatis.caches.ehcache.EhcacheCache at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:80) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:64) at com.zzr.mybatis.utils.SqlSessionFactoryUtil.<clinit>(SqlSessionFactoryUtil.java:19) ... 24 more Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'org.mybatis.caches.ehcache.EhcacheCache'. Cause: java.lang.ClassNotFoundException: Cannot find class: org.mybatis.caches.ehcache.EhcacheCache at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:121) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:99) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:78) ... 26 more Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'org.mybatis.caches.ehcache.EhcacheCache'. Cause: java.lang.ClassNotFoundException: Cannot find class: org.mybatis.caches.ehcache.EhcacheCache at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:120) at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92) at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.loadXmlResource(MapperAnnotationBuilder.java:173) at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.parse(MapperAnnotationBuilder.java:124) at org.apache.ibatis.binding.MapperRegistry.addMapper(MapperRegistry.java:72) at org.apache.ibatis.binding.MapperRegistry.addMappers(MapperRegistry.java:97) at org.apache.ibatis.binding.MapperRegistry.addMappers(MapperRegistry.java:105) at org.apache.ibatis.session.Configuration.addMappers(Configuration.java:737) at org.apache.ibatis.builder.xml.XMLConfigBuilder.mapperElement(XMLConfigBuilder.java:364) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:119) ... 28 more Caused by: org.apache.ibatis.type.TypeException: Could not resolve type alias 'org.mybatis.caches.ehcache.EhcacheCache'. Cause: java.lang.ClassNotFoundException: Cannot find class: org.mybatis.caches.ehcache.EhcacheCache at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:120) at org.apache.ibatis.builder.xml.XMLMapperBuilder.cacheElement(XMLMapperBuilder.java:202) at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:114) ... 37 more Caused by: java.lang.ClassNotFoundException: Cannot find class: org.mybatis.caches.ehcache.EhcacheCache at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:200) at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:89) at org.apache.ibatis.io.Resources.classForName(Resources.java:261) at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:116) ... 39 more ```

mybaits 小小白 error building sqlsession

org.apache.ibatis.exceptions.PersistenceException: ### Error building SqlSession. ### Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 3; columnNumber: 78; 根元素类型 "configuration" 的文档类型声明必须以 '>' 结尾。 at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:80) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:64) at com.atguigu.mybatis.test.MyBatisTest.test(MyBatisTest.java:19) 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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) 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$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206) Caused by: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 3; columnNumber: 78; 根元素类型 "configuration" 的文档类型声明必须以 '>' 结尾。 at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:259) at org.apache.ibatis.parsing.XPathParser.<init>(XPathParser.java:125) at org.apache.ibatis.builder.xml.XMLConfigBuilder.<init>(XMLConfigBuilder.java:81) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:77) ... 25 more Caused by: org.xml.sax.SAXParseException; lineNumber: 3; columnNumber: 78; 根元素类型 "configuration" 的文档类型声明必须以 '>' 结尾。 at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.scanDoctypeDecl(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source) at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source) at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:257) ... 28 more <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper SYSTEM "http://mybatis.org/dtd/mybatis-3-mapper.dtd" PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"> -<mapper namespace="com.atguigu.mybatis.dao.EmployeeMapper"> <select resultType="com.atguigu.mybatis.bean.Employee" id="getEmpById">select id,last_name,email,gender from tbl_employee where id = #{id} </select> </mapper> <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper SYSTEM "http://mybatis.org/dtd/mybatis-3-mapper.dtd" PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"> -<mapper namespace="com.atguigu.mybatis.dao.EmployeeMapper"> <select resultType="com.atguigu.mybatis.bean.Employee" id="getEmpById">select id,last_name,email,gender from tbl_employee where id = #{id} </select> </mapper> ``` ``` package com.atguigu.mybatis.test; import java.io.IOException; import java.io.InputStream; import org.apache.ibatis.io.Resources; import org.apache.ibatis.session.SqlSession; import org.apache.ibatis.session.SqlSessionFactory; import org.apache.ibatis.session.SqlSessionFactoryBuilder; import org.junit.Test; import com.atguigu.mybatis.bean.Employee; public class MyBatisTest { @Test public void test() throws IOException { String resource = "mybatis-config.xml"; InputStream inputStream = Resources.getResourceAsStream(resource); SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream); SqlSession openSession = sqlSessionFactory.openSession(); try { Employee employee = openSession.selectOne("EmployeeMapper", 1); System.out.println(employee); }finally { openSession.close(); } } }

为什么SQL语句在MySQL中可以输出,在mybatis中不行报错Exception: Cannot find class: ${driver}

org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.sql.SQLException: Error setting driver on UnpooledDataSource. Cause: java.lang.ClassNotFoundException: Cannot find class: ${driver} ### The error may exist in cn/fs/dao/UserMapper.xml ### The error may involve cn.fs.dao.UserMapper.count ### The error occurred while executing a query ### Cause: java.sql.SQLException: Error setting driver on UnpooledDataSource. Cause: java.lang.ClassNotFoundException: Cannot find class: ${driver} at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:107) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:98) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:62) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:57) at cn.fs.test.UserMapperTest.test(UserMapperTest.java:39) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28) at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) at org.junit.runners.ParentRunner.run(ParentRunner.java:236) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) Caused by: java.sql.SQLException: Error setting driver on UnpooledDataSource. Cause: java.lang.ClassNotFoundException: Cannot find class: ${driver} at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.initializeDriver(UnpooledDataSource.java:195) at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.doGetConnection(UnpooledDataSource.java:179) at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.doGetConnection(UnpooledDataSource.java:175) at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.getConnection(UnpooledDataSource.java:79) at org.apache.ibatis.datasource.pooled.PooledDataSource.popConnection(PooledDataSource.java:373) at org.apache.ibatis.datasource.pooled.PooledDataSource.getConnection(PooledDataSource.java:82) at org.apache.ibatis.transaction.jdbc.JdbcTransaction.openConnection(JdbcTransaction.java:131) at org.apache.ibatis.transaction.jdbc.JdbcTransaction.getConnection(JdbcTransaction.java:58) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:271) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:69) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:56) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:259) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:132) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:105) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:81) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:104) ... 28 more

error错误 求大神帮忙不知道哪的原因在线等!!!!!!!!!!!!!!!

org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.apache.ibatis.builder.IncompleteElementException: Could not find result map info. ### Cause: org.apache.ibatis.builder.IncompleteElementException: Could not find result map info. ![图片说明](https://img-ask.csdn.net/upload/201705/11/1494495698_75023.jpg)

对实体 "characterEncoding" 的引用必须以 ';' 分隔符结尾。

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Cause: java.lang.NullPointerException ### The error may exist in com/briup/estore/dao/CustomerMapper.xml ### The error may involve com.briup.estore.dao.ICustomerDao.findByName ### The error occurred while executing a query ### Cause: java.lang.NullPointerException at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:122) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:113) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:73) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:69) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:53) at com.sun.proxy.$Proxy0.findByName(Unknown Source) at com.briup.estore.service.impl.Test.main(Test.java:23) Caused by: java.lang.NullPointerException at java.lang.String.<init>(Unknown Source) at oracle.sql.CharacterSet.AL32UTF8ToString(CharacterSet.java:1518) at oracle.jdbc.driver.DBConversion.CharBytesToString(DBConversion.java:610) at oracle.jdbc.driver.DBConversion.CharBytesToString(DBConversion.java:555) at oracle.jdbc.driver.T4CTTIoauthenticate.receiveOauth(T4CTTIoauthenticate.java:822) at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:362) at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:441) at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165) at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35) at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801) at java.sql.DriverManager.getConnection(Unknown Source) at java.sql.DriverManager.getConnection(Unknown Source) at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.doGetConnection(UnpooledDataSource.java:201) at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.doGetConnection(UnpooledDataSource.java:196) at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.getConnection(UnpooledDataSource.java:93) at org.apache.ibatis.datasource.pooled.PooledDataSource.popConnection(PooledDataSource.java:385) at org.apache.ibatis.datasource.pooled.PooledDataSource.getConnection(PooledDataSource.java:89) at org.apache.ibatis.transaction.jdbc.JdbcTransaction.openConnection(JdbcTransaction.java:140) at org.apache.ibatis.transaction.jdbc.JdbcTransaction.getConnection(JdbcTransaction.java:62) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:315) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:75) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:61) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:303) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:154) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:102) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:82) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:120) ... 6 more ``` 求解这是什么原因导致的 抱歉放错mapper了

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