地址信息： jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/order?characterEncoding=UTF-8 jdbc.username=root jdbc.password=123456 jdbc.initSize=5 jdbc.maxActive=10 jdbc.maxIdle=5 jdbc.minIdle=2 jdbc.maxWait=1000 <!-- 配置数据源 --> <bean id="dataSourceone" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close"> <!-- 数据库基本信息配置 --> <property name="driverClassName" value="${jdbc.driver}" /> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <!-- 初始化连接数量 --> <property name="initialSize" value="${jdbc.initSize}" /> <!-- 最大并发连接数 --> <property name="maxActive" value="${jdbc.maxActive}" /> <!-- 最大空闲连接数 --> <property name="maxIdle" value="${jdbc.maxIdle}" /> <!-- 最小空闲连接数 --> <property name="minIdle" value="${jdbc.minIdle}" /> <!-- 配置获取连接等待超时的时间 ms --> <property name="maxWait" value="${jdbc.maxWait}" /> <!-- 牺牲效率，避免活锁 --> <property name="useUnfairLock" value="false" /> <!-- 超过时间限制是否回收 未归还(调用close)的连接 --> <property name="removeAbandoned" value="false" /> <!-- 超时回收限制多长；没有批量处理需求，设短一点，单位 秒 --> <property name="removeAbandonedTimeout" value="180" /> <!-- 用来检测连接是否有效的sql，要求是一个查询语句--> <property name="validationQuery" value="SELECT 1 FROM dual" /> <!-- 空闲的时候检测（空闲时间超过下面的值） --> <property name="testWhileIdle" value="true" /> <!-- 申请连接时执行validationQuery检测连接是否有效，配置为true会降低性能 --> <property name="testOnBorrow" value="false" /> <!-- 归还连接时执行validationQuery检测连接是否有效，配置为true会降低性能 --> <property name="testOnReturn" value="false" /> <!-- Destroy线程检测是否关闭连接的间隔，同时也是空闲检测的判断依据，单位 毫秒 --> <property name="timeBetweenEvictionRunsMillis" value="60000" /> <!-- 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="600000" /> <!--属性类型是字符串，通过别名的方式配置扩展插件，常用的插件有： 监控统计用的filter:stat 日志用的filter:log4j 防御SQL注入的filter:wall--> <property name="filters" value="filter:wall" /> </bean> 启动报错：org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'root'@'122.225.88.154' (using password: YES) 122.225.88.154都不知道是哪里的地址，我已经蒙了，求大神指点

每次找类的来源包总是很头疼，求大神指点。 例如：javax.sql.DataSource是在哪一个jar里的？ 有什么方法可以快速的找到对应的jar包？（新引入的项目，没法通过eclipse工具去定位） javax.sql.DataSource路径和maven中央仓库的路径又不是一一对应呀。 而且百度也很难得到答案。

``` 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 com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. ### The error may exist in com/gaozhimo/collection/mapper/DemoMapper.java (best guess) ### The error may involve com.gaozhimo.collection.mapper.DemoMapper.findName ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:76) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:399) at com.sun.proxy.$Proxy14.selectOne(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:165) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:95) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40) at com.sun.proxy.$Proxy23.findName(Unknown Source) at com.gaozhimo.collection.service.impl.DemoServiceImpl$Task.handleSocket(DemoServiceImpl.java:545) at com.gaozhimo.collection.service.impl.DemoServiceImpl$Task.run(DemoServiceImpl.java:70) at java.lang.Thread.run(Unknown Source) Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. ### The error may exist in com/gaozhimo/collection/mapper/DemoMapper.java (best guess) ### The error may involve com.gaozhimo.collection.mapper.DemoMapper.findName ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:104) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:95) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:59) at sun.reflect.GeneratedMethodAccessor44.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:386) ... 8 more Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80) 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:279) 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:267) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:141) 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:101) ... 14 more Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) at com.mysql.jdbc.Util.handleNewInstance(Util.java:406) at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2103) at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:718) at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46) at sun.reflect.GeneratedConstructorAccessor26.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) at com.mysql.jdbc.Util.handleNewInstance(Util.java:406) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:302) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282) at java.sql.DriverManager.getConnection(Unknown Source) at java.sql.DriverManager.getConnection(Unknown Source) at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:153) at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:144) at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:196) at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:159) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) ... 24 more Caused by: java.net.SocketException: No buffer space available (maximum connections reached?): connect at java.net.DualStackPlainSocketImpl.connect0(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source) at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) at java.net.AbstractPlainSocketImpl.connect(Unknown Source) at java.net.PlainSocketImpl.connect(Unknown Source) at java.net.SocksSocketImpl.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.<init>(Unknown Source) at java.net.Socket.<init>(Unknown Source) at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:253) at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:280) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2026) ... 40 more 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 com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. ### The error may exist in com/gaozhimo/collection/mapper/DemoMapper.java (best guess) ### The error may involve com.gaozhimo.collection.mapper.DemoMapper.findName ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:76) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:399) at com.sun.proxy.$Proxy14.selectOne(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:165) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:95) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40) at com.sun.proxy.$Proxy23.findName(Unknown Source) at com.gaozhimo.collection.service.impl.DemoServiceImpl$Task.handleSocket(DemoServiceImpl.java:545) at com.gaozhimo.collection.service.impl.DemoServiceImpl$Task.run(DemoServiceImpl.java:70) at java.lang.Thread.run(Unknown Source) Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. ### The error may exist in com/gaozhimo/collection/mapper/DemoMapper.java (best guess) ### The error may involve com.gaozhimo.collection.mapper.DemoMapper.findName ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:104) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:95) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:59) at sun.reflect.GeneratedMethodAccessor44.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:386) ... 8 more Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80) 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:279) 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:267) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:141) 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:101) ... 14 more Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) at com.mysql.jdbc.Util.handleNewInstance(Util.java:406) at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2103) at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:718) at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46) at sun.reflect.GeneratedConstructorAccessor26.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) at com.mysql.jdbc.Util.handleNewInstance(Util.java:406) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:302) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282) at java.sql.DriverManager.getConnection(Unknown Source) at java.sql.DriverManager.getConnection(Unknown Source) at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:153) at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:144) at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:196) at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:159) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) ... 24 more Caused by: java.net.SocketException: No buffer space available (maximum connections reached?): connect at java.net.DualStackPlainSocketImpl.connect0(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source) at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) at java.net.AbstractPlainSocketImpl.connect(Unknown Source) at java.net.PlainSocketImpl.connect(Unknown Source) at java.net.SocksSocketImpl.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.<init>(Unknown Source) at java.net.Socket.<init>(Unknown Source) at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:253) at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:280) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2026) ... 40 more ```

java.lang.NoSuchMethodError: org.slf4j.spi.LocationAwareLogger.log(Lorg/slf4j/Marker;Ljava/lang/String;ILjava/lang/String;[Ljava/lang/Object;Ljava/lang/Throwable;)V at org.apache.commons.logging.impl.SLF4JLocationAwareLog.info(SLF4JLocationAwareLog.java:159) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:272) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3827) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4334) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920) at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:566) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) 2016-11-14 11:37:51 org.apache.catalina.core.StandardContext listenerStart 严重: Exception sending context initialized event to listener instance of class com.success.framework.util.DAOUtil java.lang.NullPointerException at com.success.framework.util.DAOUtil.contextInitialized(DAOUtil.java:29) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3827) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4334) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920) at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:566) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) 2016-11-14 11:37:51 org.apache.catalina.core.StandardContext listenerStart 严重: Exception sending context initialized event to listener instance of class com.success.framework.plugin.TaskMng java.lang.NoClassDefFoundError: torm/model/datasource/MetaDataSource at com.success.framework.plugin.WeatherDataTask.<clinit>(WeatherDataTask.java:30) at com.success.framework.plugin.TaskMng.init(TaskMng.java:32) at com.success.framework.plugin.TaskMng.contextInitialized(TaskMng.java:44) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3827) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4334) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920) at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:566) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Caused by: java.lang.ClassNotFoundException: torm.model.datasource.MetaDataSource at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204) ... 27 more

报错如下： 2017-11-19 15:13:40.009 ERROR 15152 --- [nio-8090-exec-2] e.n.y.o.service.LoginModuleService : checkUserInfo: Error message is 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 java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) ### The error may exist in file [D:\Spring\JavaWeb\OnlineBookstore\target\classes\mybatis\mapper\UserInfoMapper.xml] ### The error may involve edu.javaee.onlinebookstore.mapper.UserInfoMapper.isNameExist ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) application.properties配置如下： server.port = 8090 spring.mvc.view.prefix = /WEB-INF/jsp/ spring.mvc.view.suffix = .jsp spring.datasource.driverClassName = com.mysql.jdbc.Driver spring.datasource.url = jdbc:mysql://localhost:3306/onlinebookstore?useUnicode=true&characterEncoding=utf8&useSSL=false spring.datasource.username = root spring.datasource.password = root mybatis.typeAliasesPackage = edu.javaee.onlinebookstore.domain mybatis.config-location = classpath:mybatis/mybatis-config.xml mybatis.mapper-locations = classpath:mybatis/mapper/*Mapper.xml logging.file = log/service.log 检查过数据库密码正确，可以通过Navicat访问。

数据库连接池信息 <!-- 数据源配置, 使用proxool连接池 --> <bean id="dataSource" class="org.logicalcobwebs.proxool.ProxoolDataSource"> <property name="alias" value="BAP database" /> <property name="driver" value="${jdbc.driver}" /> <property name="driverUrl" value="${jdbc.url}"/> <property name="user" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <!-- 最少保持的空闲连接数 --> <property name="prototypeCount" value="2" /> <!-- proxool自动侦察各个连接状态的时间间隔（毫秒),侦察到空闲的连接就马上回收，超时的销毁，默认30秒,我们设置60秒 --> <property name="houseKeepingSleepTime" value="60000" /> <!-- 最大活动时间（超过此时间线程将被kill，默认5分钟） --> <!-- <property name="maximumActiveTime" value=""/> --> <!-- 最小连接数据 --> <property name="minimumConnectionCount" value="${jdbc.minConnection}" /> <!-- 最大连接数 --> <property name="maximumConnectionCount" value="${jdbc.maxConnection}" /> <!-- 测试的sql语句 --> <property name="houseKeepingTestSql" value="${jdbc.testSQL}" /> </bean> 现在项目启动报错，mysql已修改timeout时间，因为是在别人项目基础上改动，不考虑还c3p0连接池，该如何修改求大神指点下

在oauth2根据授权码获取accsess token时,通关Debug发现在TokenEndpoint类下的getAccessToken方法内会根据principal去数据库获取client_id,但principal内存储的是当前用户的信息,然后就会报错:Given client ID does not match authenticated client 求大神解答怎么破. security.xml文件如下: ``` <?xml version="1.0" encoding="UTF-8"?> <beans:beans xmlns="http://www.springframework.org/schema/security" xmlns:beans="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:oauth2="http://www.springframework.org/schema/security/oauth2" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/security/oauth2 http://www.springframework.org/schema/security/spring-security-oauth2-2.0.xsd http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.2.xsd"> <!-- 指定不需要权限过滤的路径 --> <http pattern="/login.jsp" security="none" /> <http pattern="/aouth/token" create-session="stateless" authentication-manager-ref="oauth2AuthenticationManager" entry-point-ref="oauth2AuthenticationEntryPoint"> <!-- 设置拦截地址和规则 --> <intercept-url pattern="/aouth/token" access="IS_AUTHENTICATED_FULLY" /> <!-- 非匿名 --> <anonymous enabled="false" /> <http-basic entry-point-ref="oauth2AuthenticationEntryPoint" /> <!-- 设置过滤链 --> <custom-filter ref="clientCredentialsTokenEndpointFilter" before="BASIC_AUTH_FILTER" /> <!-- 拒绝访问处理 --> <access-denied-handler ref="oauthAccessDeniedHandler" /> </http> <!--一个自定义的filter，必须包含authenticationManager,accessDecisionManager,securityMetadataSource三个属性， 我们的所有控制将在这三个类中实现 --> <beans:bean id="myFilter" class="com.yichi.mvcm.filter.MyFilterSecurityInterceptor"> <beans:property name="authenticationManager" ref="authenticationManager" /> <beans:property name="accessDecisionManager" ref="myAccessDecisionManagerBean" /> <beans:property name="securityMetadataSource" ref="myInvocationSecurityMetadataSource" /> </beans:bean> <!-- 认证客户端的manager --> <authentication-manager id="oauth2AuthenticationManager"> <authentication-provider user-service-ref="oauth2ClientDetailsUserService" /> </authentication-manager> <!-- spring security提供的用户登录验证 ，alias的值对应上面的ref="authenticationManager" --> <authentication-manager alias="authenticationManager"> <!--userDetailServiceImpl 获取登录的用户、用户权限 --> <authentication-provider user-service-ref="myUserDetailService" /> <!-- 缓存 --> <!-- <authentication-provider user-service-ref="cachingUserDetailsService" /> --> </authentication-manager> <!-- 缓存 --> <!-- <beans:bean id="cachingUserDetailsService" class="org.springframework.security.config.authentication.CachingUserDetailsService"> <beans:constructor-arg ref="myUserDetailService" /> 缓存UserDetails的UserCache <beans:property name="userCache" ref="userCache"/> </beans:bean> <beans:bean id="userCache" class="org.springframework.security.core.userdetails.cache.EhCacheBasedUserCache"> 用于真正缓存的Ehcache对象 <beans:property name="cache" ref="ehcache4UserDetails"></beans:property> </beans:bean> <beans:bean id="ehcache4UserDetails" class="org.springframework.cache.ehcache.EhCacheFactoryBean" /> --> <!--在这个类中，你就可以从数据库中读入用户的密码，角色信息，是否锁定，账号是否过期等 --> <beans:bean id="myUserDetailService" class="com.yichi.mvcm.filter.MyUserDetailService"> <!-- 配置成员变量 --> <beans:property name="sysUserService" ref="sysUserService" /> </beans:bean> <!--访问决策器，决定某个用户具有的角色，是否有足够的权限去访问某个资源 --> <beans:bean id="myAccessDecisionManagerBean" class="com.yichi.mvcm.filter.MyAccessDecisionManager"> </beans:bean> <beans:bean id="sysResService" class="com.yichi.mvcm.service.sys.SysResService"></beans:bean> <!--资源源数据定义，将所有的资源和权限对应关系建立起来，即定义某一资源可以被哪些角色访问 --> <beans:bean id="myInvocationSecurityMetadataSource" class="com.yichi.mvcm.filter.MyInvocationSecurityMetadataSource"> <!-- 配置成员变量 --> <beans:constructor-arg> <beans:ref bean="sysResService" /> </beans:constructor-arg> </beans:bean> <!-- 配置client客户端信息 --> <authentication-manager id="clientAuthenticationManager"> <authentication-provider user-service-ref="oauth2ClientDetailsUserService" /> </authentication-manager> <beans:bean id="oauth2ClientDetailsUserService" class="org.springframework.security.oauth2.provider.client.ClientDetailsUserDetailsService"> <beans:constructor-arg ref="clientDetailsService" /> </beans:bean> <!-- 数据库读取客户端信息 --> <beans:bean id="clientDetailsService" class="com.yichi.mvcm.filter.CustomJdbcClientDetailsService"> <beans:constructor-arg index="0" ref="dataSource" /> </beans:bean> <!-- 资源filter配置 --> <oauth2:resource-server id="picResourceServer" resource-id="pic-resource" token-services-ref="tokenServices" /> <!-- 配token service用于生成访问令牌token --> <beans:bean id="tokenServices" class="org.springframework.security.oauth2.provider.token.DefaultTokenServices"> <beans:property name="tokenStore" ref="tokenStore" /> <!-- 是否生成更新令牌 默认为false --> <beans:property name="supportRefreshToken" value="true" /> <beans:property name="clientDetailsService" ref="clientDetailsService" /> </beans:bean> <!-- token仓库 可以选择存储在内存或者数据库 --> <!-- <beans:bean id="tokenStore" class="org.springframework.security.oauth2.provider.token.store.InMemoryTokenStore"> </beans:bean> --> <beans:bean id="tokenStore" class="org.springframework.security.oauth2.provider.token.store.JdbcTokenStore"> <beans:constructor-arg index="0" ref="dataSource" /> </beans:bean> <!-- 资源 --> <http pattern="/mvcm/**" create-session="never" entry-point-ref="oauth2AuthenticationEntryPoint" access-decision-manager-ref="oauth2AccessDecisionManager"> <anonymous enabled="false" /> <intercept-url pattern="/mvcm/**" access="ROLE_index,SCOPE_READ" /> <custom-filter ref="picResourceServer" before="PRE_AUTH_FILTER" /> <access-denied-handler ref="oauthAccessDeniedHandler" /> </http> <beans:bean id="oauth2AuthenticationEntryPoint" class="org.springframework.security.oauth2.provider.error.OAuth2AuthenticationEntryPoint" /> <beans:bean id="oauthAccessDeniedHandler" class="org.springframework.security.oauth2.provider.error.OAuth2AccessDeniedHandler" /> <beans:bean id="oauth2AccessDecisionManager" class="org.springframework.security.access.vote.UnanimousBased"> <beans:constructor-arg> <beans:list> <beans:bean class="org.springframework.security.oauth2.provider.vote.ScopeVoter" /> <beans:bean class="org.springframework.security.access.vote.RoleVoter" /> <beans:bean class="org.springframework.security.access.vote.AuthenticatedVoter" /> </beans:list> </beans:constructor-arg> </beans:bean> <!-- user-approval-page:用户第三方登录认证以后的授权确认页面 error-page : 客户端申请授权的数据与服务端的不相同时跳转的页面 --> <oauth2:authorization-server client-details-service-ref="clientDetailsService" token-services-ref="tokenServices" user-approval-handler-ref="oauthUserApprovalHandler" user-approval-page="oauth_approval" error-page="oauth_error"> <oauth2:authorization-code authorization-code-services-ref="authorizationCodeServices" /> <oauth2:implicit /> <oauth2:refresh-token /> <oauth2:client-credentials /> <oauth2:password /> </oauth2:authorization-server> <!-- 授权码存储到数据库 --> <beans:bean id="authorizationCodeServices" class="org.springframework.security.oauth2.provider.code.JdbcAuthorizationCodeServices"> <beans:constructor-arg index="0" ref="dataSource" /> </beans:bean> <beans:bean id="oauthUserApprovalHandler" class="org.springframework.security.oauth2.provider.approval.DefaultUserApprovalHandler" /> <!-- <beans:bean id="clientCredentialsTokenEndpointFilter" class="org.springframework.security.oauth2.provider.client.ClientCredentialsTokenEndpointFilter"> <beans:property name="authenticationManager" ref="clientAuthenticationManager" /> </beans:bean> --> <beans:bean id="clientCredentialsTokenEndpointFilter" class="org.springframework.security.oauth2.provider.client.ClientCredentialsTokenEndpointFilter"> <beans:property name="authenticationManager" ref="clientAuthenticationManager" /> </beans:bean> <http auto-config="true" use-expressions="true"> <!-- 没有权限时跳转的页面 --> <access-denied-handler error-page="/accessDenied.jsp" /> <!-- 使用自定义的登录页面 login_page:指定登录页面 authentication-failure-url:登录失败跳转到/login.jsp login-processing-url进行认证拦截的请求路径 username-parameter和 password-parameter指定属性name字段 default-target-url认证成功默认跳转页面 --> <form-login login-page="/login.jsp" authentication-failure-url="/login.jsp?error=1" login-processing-url="/springSecurity" username-parameter="account" password-parameter="password" default-target-url="/index.jsp" /> <intercept-url pattern="/oauth/**" access="hasRole('ROLE_userOrg')" /> <!-- 设置单用户登录 --> <session-management> <!-- max-sessions表示最多允许多少次重复登录。如果没有配置error-if-maximum-exceeded， 那么用户账号的第二次登录会使第一次登录失效，而配置了的话，那么第二次登录会被阻止。 通常的做法是阻止第二次登录。 --> <concurrency-control max-sessions="1" error-if-maximum-exceeded="false" /> </session-management> <custom-filter ref="myFilter" before="FILTER_SECURITY_INTERCEPTOR" /> <!-- 检测失效的sessionId,session超时时，定位到另外一个URL --> <session-management invalid-session-url="/login.jsp" /> <logout invalidate-session="true" logout-success-url="/" logout-url="/logout" /> </http> </beans:beans> ```

使用springboot2.0.1，数据源使用alibaba的druid，数据库是oracle。启动程序启动报如下错误。同样的程序打包后在其他人电脑可以正常运行，在我电脑上运行就报如下错误。但是在我电脑上用plsql也可以正常连接数据库 ，求大神指点迷津 2018-06-06 10:45:21.242 ERROR 10508 --- [nfoReplicator-0] com.alibaba.druid.pool.DruidDataSource : init datasource error, url: jdbc:oracle:thin:@172.20.26.21:1521:dbtest java.sql.SQLRecoverableException: IO 错误: Got minus one from a read call, connect lapse 3 ms., Authentication lapse 0 ms. at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:794) at oracle.jdbc.driver.PhysicalConnection.connect(PhysicalConnection.java:688) at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:39) at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:691) at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156) at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218) at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150) at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1560) at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1623) at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:861) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1229) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1225) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:90) 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.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:324) at org.springframework.boot.actuate.jdbc.DataSourceHealthIndicator.getProduct(DataSourceHealthIndicator.java:122) at org.springframework.boot.actuate.jdbc.DataSourceHealthIndicator.doDataSourceHealthCheck(DataSourceHealthIndicator.java:109) at org.springframework.boot.actuate.jdbc.DataSourceHealthIndicator.doHealthCheck(DataSourceHealthIndicator.java:104) at org.springframework.boot.actuate.health.AbstractHealthIndicator.health(AbstractHealthIndicator.java:84) at org.springframework.boot.actuate.health.CompositeHealthIndicator.health(CompositeHealthIndicator.java:68) at org.springframework.cloud.netflix.eureka.EurekaHealthCheckHandler.getHealthStatus(EurekaHealthCheckHandler.java:103) at org.springframework.cloud.netflix.eureka.EurekaHealthCheckHandler.getStatus(EurekaHealthCheckHandler.java:99) at com.netflix.discovery.DiscoveryClient.refreshInstanceInfo(DiscoveryClient.java:1382) at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:117) at com.netflix.discovery.InstanceInfoReplicator$1.run(InstanceInfoReplicator.java:101) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: java.io.IOException: Got minus one from a read call, connect lapse 3 ms., Authentication lapse 0 ms. at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:790) ``` ```

<div class="iteye-blog-content-contain" style="font-size: 14px;"> <p><span style="color: #ff0000; font-size: 16px;">SSH想加上spring security，搞了几天都没搞出来，哪位大神来指点下</span></p> <p> </p> <p> </p> <p>WEB.XML配置</p> <p> </p> <pre name="code" class="xml">&lt;listener&gt; &lt;listener-class&gt;org.springframework.web.context.ContextLoaderListener&lt;/listener-class&gt; &lt;/listener&gt; &lt;context-param&gt; &lt;param-name&gt;contextConfigLocation&lt;/param-name&gt; &lt;param-value&gt;classpath:beans.xml,classpath:application-security.xml&lt;/param-value&gt; &lt;/context-param&gt; &lt;!-- 编码过滤 --&gt; &lt;filter&gt; &lt;filter-name&gt;encodingFilter&lt;/filter-name&gt; &lt;filter-class&gt;org.springframework.web.filter.CharacterEncodingFilter&lt;/filter-class&gt; &lt;init-param&gt; &lt;param-name&gt;encoding&lt;/param-name&gt; &lt;param-value&gt;UTF-8&lt;/param-value&gt; &lt;/init-param&gt; &lt;/filter&gt; &lt;filter-mapping&gt; &lt;filter-name&gt;encodingFilter&lt;/filter-name&gt; &lt;url-pattern&gt;/*&lt;/url-pattern&gt; &lt;/filter-mapping&gt; &lt;filter&gt; &lt;filter-name&gt;openSessionInView&lt;/filter-name&gt; &lt;filter-class&gt;org.springframework.orm.hibernate3.support.OpenSessionInViewFilter&lt;/filter-class&gt; &lt;/filter&gt; &lt;filter-mapping&gt; &lt;filter-name&gt;openSessionInView&lt;/filter-name&gt; &lt;url-pattern&gt;/*&lt;/url-pattern&gt; &lt;/filter-mapping&gt; &lt;!-- 权限 --&gt; &lt;filter&gt; &lt;filter-name&gt;springSecurityFilterChain&lt;/filter-name&gt; &lt;filter-class&gt; org.springframework.web.filter.DelegatingFilterProxy &lt;/filter-class&gt; &lt;/filter&gt; &lt;filter-mapping&gt; &lt;filter-name&gt;springSecurityFilterChain&lt;/filter-name&gt; &lt;url-pattern&gt;/*&lt;/url-pattern&gt; &lt;/filter-mapping&gt;</pre> <p> </p> <p>bean.xml配置</p> <pre name="code" class="xml">&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.directwebremoting.org/schema/spring-dwr-3.0.xsd "&gt; &lt;context:annotation-config /&gt; &lt;context:component-scan base-package="com.test" /&gt; &lt;bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"&gt; &lt;property name="locations"&gt; &lt;value&gt;classpath:jdbc.properties&lt;/value&gt; &lt;/property&gt; &lt;/bean&gt; &lt;bean id="dataSource" destroy-method="close" class="org.apache.commons.dbcp.BasicDataSource"&gt; &lt;property name="driverClassName" value="${jdbc.driverClassName}" /&gt; &lt;property name="url" value="${jdbc.url}" /&gt; &lt;property name="username" value="${jdbc.username}" /&gt; &lt;property name="password" value="${jdbc.password}" /&gt; &lt;/bean&gt; &lt;bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"&gt; &lt;property name="dataSource" ref="dataSource" /&gt; &lt;property name="packagesToScan"&gt; &lt;list&gt; &lt;value&gt;com.test.model&lt;/value&gt; &lt;/list&gt; &lt;/property&gt; &lt;property name="hibernateProperties"&gt; &lt;props&gt; &lt;prop key="hibernate.dialect"&gt; org.hibernate.dialect.PostgreSQLDialect &lt;/prop&gt; &lt;prop key="connection.provider_class"&gt;org.hibernate.connection.C3P0ConnectionProvider&lt;/prop&gt; &lt;prop key="c3p0.min_size"&gt;7&lt;/prop&gt; &lt;prop key="c3p0.max_size"&gt;42&lt;/prop&gt; &lt;prop key="c3p0.timeout"&gt;1800&lt;/prop&gt; &lt;prop key="c3p0.max_statements"&gt;50&lt;/prop&gt; &lt;prop key="c3p0.idle_test_period"&gt;60&lt;/prop&gt; &lt;prop key="c3p0.acquire_increment"&gt;1&lt;/prop&gt; &lt;prop key="c3p0.validate"&gt;true&lt;/prop&gt; &lt;prop key="hibernate.show_sql"&gt;true&lt;/prop&gt; &lt;prop key="hibernate.format_sql"&gt;false&lt;/prop&gt; &lt;prop key="hibernate.cache.use_second_level_cache"&gt;true&lt;/prop&gt; &lt;prop key="hibernate.cache.use_query_cache"&gt;true&lt;/prop&gt; &lt;prop key="hibernate.cache.provider_class"&gt;org.hibernate.cache.EhCacheProvider&lt;/prop&gt; &lt;/props&gt; &lt;/property&gt; &lt;/bean&gt; &lt;bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate"&gt; &lt;property name="sessionFactory" ref="sessionFactory"&gt;&lt;/property&gt; &lt;/bean&gt; &lt;bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"&gt; &lt;property name="sessionFactory" ref="sessionFactory" /&gt; &lt;/bean&gt; &lt;tx:annotation-driven transaction-manager="transactionManager"/&gt; &lt;tx:advice id="txAdvice" transaction-manager="transactionManager"&gt; &lt;tx:attributes&gt; &lt;tx:method name="get*" read-only="true" propagation="REQUIRED"/&gt; &lt;tx:method name="find*" read-only="true" propagation="REQUIRED"/&gt; &lt;tx:method name="*" rollback-for="java.lang.Exception" propagation="REQUIRED"/&gt; &lt;/tx:attributes&gt; &lt;/tx:advice&gt; &lt;aop:config&gt; &lt;aop:pointcut id="bussinessService" expression="execution( * com.test.service..*.*(..))" /&gt; &lt;aop:advisor pointcut-ref="bussinessService" advice-ref="txAdvice" /&gt; &lt;/aop:config&gt; &lt;/beans&gt;</pre> <p> application-security.xml配置</p> <pre name="code" class="xml">&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;b:beans xmlns="http://www.springframework.org/schema/security" xmlns:b="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.1.xsd"&gt; &lt;debug/&gt; &lt;!-- &lt;global-method-security&gt; --&gt; &lt;!-- Element 这个元素用来在你的应用程序中启用基于安全的注解（通过在这个元素中设置响应的属性）， --&gt; &lt;!-- 也可以用来声明将要应用在你的实体application context中的安全切点组。 --&gt; &lt;!-- &lt;global-method-security secured-annotations="enabled" jsr250-annotations="enabled"/&gt; --&gt; &lt;!-- protect-pointcut是非常强大的，它让你可以用简单的声明对多个bean的进行安全声明。 参考下面的例子： Java代码 --&gt; &lt;!-- &lt;global-method-security&gt; --&gt; &lt;!-- &lt;protect-pointcut expression="execution(* com.mycompany.*Service.*(..))" access="ROLE_USER"/&gt; --&gt; &lt;!-- &lt;/global-method-security&gt; 这样会保护application context中的符合条件的bean的所有方法 --&gt; &lt;!-- 不要过滤图片等静态资源，其中**代表可以跨越目录，*不可以跨越目录。 --&gt; &lt;!-- &lt;intercept-url pattern="/**/*.jpg" filters="none" /&gt; --&gt; &lt;!-- &lt;intercept-url pattern="/**/*.png" filters="none" /&gt; --&gt; &lt;!-- &lt;intercept-url pattern="/**/*.gif" filters="none" /&gt; --&gt; &lt;!-- &lt;intercept-url pattern="/**/*.css" filters="none" /&gt; --&gt; &lt;!-- &lt;intercept-url pattern="/**/*.js" filters="none" /&gt; --&gt; &lt;!-- 这些请求不用过滤 --&gt; &lt;http pattern="/**/*.js" security="none"/&gt; &lt;http pattern="/**/*.css" security="none"/&gt; &lt;http pattern="/**/*.gif**" security="none"/&gt; &lt;http pattern="/**/*.jpg" security="none"/&gt; &lt;http pattern="/login.jsp" security="none"/&gt; &lt;http use-expressions="true" entry-point-ref="authenticationProcessingFilterEntryPoint" access-denied-page="/a.jsp"&gt; &lt;logout invalidate-session="false" logout-success-url="/login.jsp" logout-url="/j_spring_security_logout"/&gt; &lt;remember-me /&gt; &lt;session-management invalid-session-url="/timeout.jsp"&gt; &lt;concurrency-control max-sessions="1" error-if-maximum-exceeded="true" expired-url="/login.jsp"&gt;&lt;/concurrency-control&gt; &lt;/session-management&gt; &lt;!-- 定制自己的过滤器 --&gt; &lt;custom-filter ref="loginFilter" position="FORM_LOGIN_FILTER" /&gt; &lt;custom-filter ref="securityFilter" before="FILTER_SECURITY_INTERCEPTOR"/&gt; &lt;/http&gt; &lt;!-- 登录验证器 --&gt; &lt;b:bean id="loginFilter" class="com.sjweb.security.MyUsernamePasswordAuthenticationFilter"&gt; &lt;!-- 处理登录 --&gt; &lt;b:property name="filterProcessesUrl" value="/j_spring_security_check"&gt;&lt;/b:property&gt; &lt;b:property name="authenticationSuccessHandler" ref="loginLogAuthenticationSuccessHandler"&gt;&lt;/b:property&gt; &lt;b:property name="authenticationFailureHandler" ref="simpleUrlAuthenticationFailureHandler"&gt;&lt;/b:property&gt; &lt;b:property name="authenticationManager" ref="myAuthenticationManager"&gt;&lt;/b:property&gt; &lt;b:property name="usersService" ref="usersService"&gt;&lt;/b:property&gt; &lt;/b:bean&gt; &lt;b:bean id="loginLogAuthenticationSuccessHandler" class="org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler"&gt; &lt;!-- 登录成功后的页面 --&gt; &lt;b:property name="defaultTargetUrl" value="/index.jsp"&gt;&lt;/b:property&gt; &lt;/b:bean&gt; &lt;b:bean id="simpleUrlAuthenticationFailureHandler" class="org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler"&gt; &lt;b:property name="defaultFailureUrl" value="/login.jsp"&gt;&lt;/b:property&gt; &lt;/b:bean&gt; &lt;!-- 认证过滤器 --&gt; &lt;b:bean id="securityFilter" class="com.sjweb.security.MySecurityFilter"&gt; &lt;!-- 用户拥有的权限 --&gt; &lt;b:property name="authenticationManager" ref="myAuthenticationManager" /&gt; &lt;!-- 用户是否拥有所请求资源的权限 --&gt; &lt;b:property name="accessDecisionManager" ref="myAccessDecisionManager" /&gt; &lt;!-- 资源与权限对应关系 --&gt; &lt;b:property name="securityMetadataSource" ref="mySecurityMetadataSource" /&gt; &lt;/b:bean&gt; &lt;!-- 实现了UserDetailsService的Bean --&gt; &lt;authentication-manager alias="myAuthenticationManager"&gt; &lt;authentication-provider user-service-ref="myUserDetailServiceImpl"&gt; &lt;/authentication-provider&gt; &lt;/authentication-manager&gt; &lt;b:bean id="myAccessDecisionManager" class="com.test.security.MyAccessDecisionManager"&gt;&lt;/b:bean&gt; &lt;b:bean id="mySecurityMetadataSource" class="com.test.security.MySecurityMetadataSource"&gt; &lt;b:constructor-arg name="resourcesService" ref="resourcesService"&gt;&lt;/b:constructor-arg&gt; &lt;/b:bean&gt; &lt;b:bean id="myUserDetailServiceImpl" class="com.test.security.MyUserDetailServiceImpl"&gt; &lt;b:property name="usersService" ref="usersService"&gt;&lt;/b:property&gt; &lt;/b:bean&gt; &lt;b:bean id="authenticationProcessingFilterEntryPoint" class="org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint"&gt; &lt;b:property name="loginFormUrl" value="/login.jsp"&gt;&lt;/b:property&gt; &lt;/b:bean&gt; &lt;/b:beans&gt;</pre> <p> 异常信息</p> <pre name="code" class="java">Hibernate: select this_.resources_id as resources1_1_0_, this_.create_time as create2_1_0_, this_.enable as enable1_0_, this_.enname as enname1_0_, this_.iscore as iscore1_0_, this_.isleaf as isleaf1_0_, this_.isopen as isopen1_0_, this_.memo as memo1_0_, this_.name as name1_0_, this_.orderid as orderid1_0_, this_.parentid as parentid1_0_, this_.resourcetype as resourc12_1_0_, this_.target as target1_0_ from lq_resources this_ 2013-02-02 02:36:16,220 INFO [org.springframework.beans.factory.support.DefaultListableBeanFactory] - Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@e29820: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,baseDAOSupport,resourcesDAOImpl,usersDAOImpl,resourcesService,usersService,org.springframework.beans.factory.config.PropertyPlaceholderConfigurer#0,dataSource,sessionFactory,hibernateTemplate,transactionManager,org.springframework.aop.config.internalAutoProxyCreator,org.springframework.transaction.annotation.AnnotationTransactionAttributeSource#0,org.springframework.transaction.interceptor.TransactionInterceptor#0,org.springframework.transaction.config.internalTransactionAdvisor,txAdvice,bussinessService,org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0,org.springframework.security.config.debug.SecurityDebugBeanFactoryPostProcessor#0,org.springframework.security.filterChains,org.springframework.security.filterChainProxy,org.springframework.security.web.DefaultSecurityFilterChain#0,org.springframework.security.web.DefaultSecurityFilterChain#1,org.springframework.security.web.DefaultSecurityFilterChain#2,org.springframework.security.web.DefaultSecurityFilterChain#3,org.springframework.security.web.DefaultSecurityFilterChain#4,org.springframework.security.web.PortMapperImpl#0,org.springframework.security.web.PortResolverImpl#0,org.springframework.security.config.authentication.AuthenticationManagerFactoryBean#0,org.springframework.security.authentication.ProviderManager#0,org.springframework.security.web.context.HttpSessionSecurityContextRepository#0,org.springframework.security.core.session.SessionRegistryImpl#0,org.springframework.security.web.authentication.session.ConcurrentSessionControlStrategy#0,org.springframework.security.web.savedrequest.HttpSessionRequestCache#0,org.springframework.security.web.access.expression.DefaultWebSecurityExpressionHandler#0,org.springframework.security.access.vote.AffirmativeBased#0,org.springframework.security.web.access.intercept.FilterSecurityInterceptor#0,org.springframework.security.web.access.DefaultWebInvocationPrivilegeEvaluator#0,org.springframework.security.authentication.AnonymousAuthenticationProvider#0,org.springframework.security.web.authentication.rememberme.TokenBasedRememberMeServices#0,org.springframework.security.authentication.RememberMeAuthenticationProvider#0,org.springframework.security.userDetailsServiceFactory,org.springframework.security.web.DefaultSecurityFilterChain#5,loginFilter,loginLogAuthenticationSuccessHandler,simpleUrlAuthenticationFailureHandler,securityFilter,org.springframework.security.authentication.dao.DaoAuthenticationProvider#0,org.springframework.security.authentication.DefaultAuthenticationEventPublisher#0,org.springframework.security.authenticationManager,myAccessDecisionManager,mySecurityMetadataSource,myUserDetailServiceImpl,authenticationProcessingFilterEntryPoint,springSecurityFilterChain]; root of factory hierarchy 2013-02-02 02:36:16,220 INFO [org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean] - Closing Hibernate SessionFactory 2013-02-02 02:36:16,220 INFO [org.hibernate.impl.SessionFactoryImpl] - closing 2013-02-02 02:36:16,267 ERROR [org.springframework.web.context.ContextLoader] - Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.filterChains': Cannot resolve reference to bean 'org.springframework.security.web.DefaultSecurityFilterChain#5' while setting bean property 'sourceList' with key [5]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.web.DefaultSecurityFilterChain#5': Cannot resolve reference to bean 'securityFilter' while setting constructor argument with key [10]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'securityFilter' defined in class path resource [application-security.xml]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: AccessDecisionManager does not support secure object class: class org.springframework.security.web.FilterInvocation at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedList(BeanDefinitionValueResolver.java:353) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:153) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1325) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1086) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:563) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425) at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:276) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3934) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4429) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:987) at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:909) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:495) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1206) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:314) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardHost.start(StandardHost.java:722) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:583) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.web.DefaultSecurityFilterChain#5': Cannot resolve reference to bean 'securityFilter' while setting constructor argument with key [10]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'securityFilter' defined in class path resource [application-security.xml]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: AccessDecisionManager does not support secure object class: class org.springframework.security.web.FilterInvocation at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedList(BeanDefinitionValueResolver.java:353) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:153) at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:616) at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:148) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1003) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:907) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322) ... 41 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'securityFilter' defined in class path resource [application-security.xml]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: AccessDecisionManager does not support secure object class: class org.springframework.security.web.FilterInvocation at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1420) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322) ... 55 more Caused by: java.lang.IllegalArgumentException: AccessDecisionManager does not support secure object class: class org.springframework.security.web.FilterInvocation at org.springframework.util.Assert.isTrue(Assert.java:65) at org.springframework.security.access.intercept.AbstractSecurityInterceptor.afterPropertiesSet(AbstractSecurityInterceptor.java:128) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1477) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1417) ... 62 more 2013-2-2 2:36:16 org.apache.catalina.core.StandardContext listenerStart 严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.filterChains': Cannot resolve reference to bean 'org.springframework.security.web.DefaultSecurityFilterChain#5' while setting bean property 'sourceList' with key [5]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.web.DefaultSecurityFilterChain#5': Cannot resolve reference to bean 'securityFilter' while setting constructor argument with key [10]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'securityFilter' defined in class path resource [application-security.xml]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: AccessDecisionManager does not support secure object class: class org.springframework.security.web.FilterInvocation at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedList(BeanDefinitionValueResolver.java:353) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:153) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1325) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1086) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:563) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425) at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:276) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3934) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4429) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:987) at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:909) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:495) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1206) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:314) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardHost.start(StandardHost.java:722) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:583) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.web.DefaultSecurityFilterChain#5': Cannot resolve reference to bean 'securityFilter' while setting constructor argument with key [10]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'securityFilter' defined in class path resource [application-security.xml]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: AccessDecisionManager does not support secure object class: class org.springframework.security.web.FilterInvocation at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedList(BeanDefinitionValueResolver.java:353) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:153) at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:616) at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:148) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1003) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:907) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322) ... 41 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'securityFilter' defined in class path resource [application-security.xml]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: AccessDecisionManager does not support secure object class: class org.springframework.security.web.FilterInvocation at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1420) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322) ... 55 more Caused by: java.lang.IllegalArgumentException: AccessDecisionManager does not support secure object class: class org.springframework.security.web.FilterInvocation at org.springframework.util.Assert.isTrue(Assert.java:65) at org.springframework.security.access.intercept.AbstractSecurityInterceptor.afterPropertiesSet(AbstractSecurityInterceptor.java:128) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1477) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1417) ... 62 more</pre> <p> </p> </div>

spring配置文件 <!-- 配置读取properties文件 jdbc.properties --> <context:property-placeholder location="classpath:jdbc.properties" /> <!-- 配置数据源 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <property name="driverClassName" value="${jdbc.driver}" /> <property name="url" value="${jdbc.url}"/> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> </bean> <!-- 配置sqlSessionFactory --> <bean id ="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 核心配置文件 --> <property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" /> <!-- 注入数据源 --> <property name="dataSource" ref="dataSource" /> </bean> properties文件: jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/crm?characterEncoding=utf-8 jdbc.username=root jdbc.password=root classpath下配置了驱动  tomcat也配置了  但是还是报错，求各位大神指点一下！

using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Data; using System.Data.SqlClient; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void btnConnection_Click(object sender, EventArgs e) { string Connection = "Data Source=Localhost;User Id=zhang; Password=123456;Database=BBS"; SqlConnection con = new SqlConnection(Connection); try { con.Open(); if (con.State==ConnectionState.Open) { lbl1.Text = "数据库连接成功。<br>"; lbl1.Text += con.ConnectionString; } con.Close(); } catch (Exception ex) { lbl1.Text = ex.Message; } } }  跟踪断点调试 直接由con.Open();跳到了catch (Exception ex) 求助各位大神 各位大神 应该和zhang这个账户的权限这些没什么关系 我用zhang这个账户在management studio上能登陆进去! [图片说明](https://img-ask.csdn.net/upload/201506/05/1433487077_317891.jpg) 我在网上查了一下 有网友说是设置一下ip地址 我在vs上添加连接上试了一下也没问题能连上去 就是用sqlconnection不行 断点调试 提示是无效操作，连接被关闭  求大神指点迷津吧 谢谢了 另外 sa账户应该是设置还是什么地方出了问题 无法登陆 被禁用了 去属性里面更改 又报错

原项目开发环境jdk1.6，tomcat6，在weblogic10下可正常运行 后升级jdk1.8及tomcat8下可运行，在weblogic12c下运行报错，修改weblogic.xml增加如下 <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE weblogic-web-app PUBLIC "-//BEA Systems, Inc.//DTD WebApplication 8.1//EN""http://www.bea.com/servers/wls810/dtd/weblogic810-web-jar.dtd"> prefer-web-inf-classes为true依旧报错 报错信息如下 ####<2019-8-12 上午10时36分16,332秒 CST> <Info> <CONCURRENCY> <WIN-D7SVFCSSTIA> <AdminServer> <[STANDBY] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <df5ed606-8b52-4ff5-9429-76ca73cbe1fa-00000009> <1565577376332> <[severity-value: 64] [rid: 0] [partition-id: 0] [partition-name: DOMAIN] > <BEA-2162600> <Creating ManagedThreadFactory "DefaultManagedThreadFactory" (partition="DOMAIN", module="null", application="defaultCoherenceCluster")> ####<2019-8-12 上午10时36分16,332秒 CST> <Info> <CONCURRENCY> <WIN-D7SVFCSSTIA> <AdminServer> <[STANDBY] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <df5ed606-8b52-4ff5-9429-76ca73cbe1fa-00000009> <1565577376332> <[severity-value: 64] [rid: 0] [partition-id: 0] [partition-name: DOMAIN] > <BEA-2162610> <Creating ManagedExecutorService "DefaultManagedExecutorService" (partition="DOMAIN", module="null", application="defaultCoherenceCluster", workmanager="default")> ####<2019-8-12 上午10时36分16,332秒 CST> <Info> <CONCURRENCY> <WIN-D7SVFCSSTIA> <AdminServer> <[STANDBY] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <df5ed606-8b52-4ff5-9429-76ca73cbe1fa-00000009> <1565577376332> <[severity-value: 64] [rid: 0] [partition-id: 0] [partition-name: DOMAIN] > <BEA-2162611> <Creating ManagedScheduledExecutorService "DefaultManagedScheduledExecutorService" (partition="DOMAIN", module="null", application="defaultCoherenceCluster", workmanager="default")> ####<2019-8-12 上午10时36分16,456秒 CST> <Info> <WebLogicServer> <WIN-D7SVFCSSTIA> <AdminServer> <[STANDBY] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <df5ed606-8b52-4ff5-9429-76ca73cbe1fa-00000009> <1565577376456> <[severity-value: 64] [rid: 0] [partition-id: 0] [partition-name: DOMAIN] > <BEA-000256> <Invoking weblogic.transaction.internal.StartupClass.main(null)> ####<2019-8-12 上午10时36分16,645秒 CST> <Info> <Deployer> <WIN-D7SVFCSSTIA> <AdminServer> <[STANDBY] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <df5ed606-8b52-4ff5-9429-76ca73cbe1fa-00000009> <1565577376645> <[severity-value: 64] [rid: 0] [partition-id: 0] [partition-name: DOMAIN] > <BEA-149059> <Module lmszs of application lmszs is transitioning from STATE_PREPARED to STATE_ADMIN on server AdminServer.> ####<2019-8-12 上午10时36分16,722秒 CST> <Info> <Deployer> <WIN-D7SVFCSSTIA> <AdminServer> <[STANDBY] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <df5ed606-8b52-4ff5-9429-76ca73cbe1fa-00000009> <1565577376722> <[severity-value: 64] [rid: 0] [partition-id: 0] [partition-name: DOMAIN] > <BEA-149060> <Module lmszs of application lmszs successfully transitioned from STATE_PREPARED to STATE_ADMIN on server AdminServer.> ####<2019-8-12 上午10时36分20,832秒 CST> <Info> <ServletContext-/PosService> <WIN-D7SVFCSSTIA> <AdminServer> <[STANDBY] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <> <df5ed606-8b52-4ff5-9429-76ca73cbe1fa-00000009> <1565577380832> <[severity-value: 64] [rid: 0] [partition-id: 0] [partition-name: DOMAIN] > <BEA-000000> <Set web app root system property: 'lms.root' = [C:\lmszs\]> ####<2019-8-12 上午10时36分20,847秒 CST> <Info> <ServletContext-/PosService> <WIN-D7SVFCSSTIA> <AdminServer> <[STANDBY] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <> <df5ed606-8b52-4ff5-9429-76ca73cbe1fa-00000009> <1565577380847> <[severity-value: 64] [rid: 0] [partition-id: 0] [partition-name: DOMAIN] > <BEA-000000> <Initializing Spring root WebApplicationContext> ####<2019-8-12 上午10时36分22,956秒 CST> <Warning> <HTTP> <WIN-D7SVFCSSTIA> <AdminServer> <[STANDBY] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <df5ed606-8b52-4ff5-9429-76ca73cbe1fa-00000009> <1565577382956> <[severity-value: 16] [rid: 0] [partition-id: 0] [partition-name: DOMAIN] > <BEA-101162> <User defined listener org.springframework.web.context.ContextLoaderListener failed: org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from file [C:\lmszs\WEB-INF\classes\spring\applicationContext-datasource.xml]; nested exception is java.lang.LinkageError: loader constraint violation: when resolving method "javax.xml.parsers.DocumentBuilder.setEntityResolver(Lorg/xml/sax/EntityResolver;)V" the class loader (instance of weblogic/utils/classloaders/ChangeAwareClassLoader) of the current class, org/springframework/beans/factory/xml/DefaultDocumentLoader, and the class loader (instance of <bootloader>) for the method's defining class, javax/xml/parsers/DocumentBuilder, have different Class objects for the type org/xml/sax/EntityResolver used in the signature. org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from file [C:\lmszs\WEB-INF\classes\spring\applicationContext-datasource.xml]; nested exception is java.lang.LinkageError: loader constraint violation: when resolving method "javax.xml.parsers.DocumentBuilder.setEntityResolver(Lorg/xml/sax/EntityResolver;)V" the class loader (instance of weblogic/utils/classloaders/ChangeAwareClassLoader) of the current class, org/springframework/beans/factory/xml/DefaultDocumentLoader, and the class loader (instance of <bootloader>) for the method's defining class, javax/xml/parsers/DocumentBuilder, have different Class objects for the type org/xml/sax/EntityResolver used in the signature at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:414) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:336) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304) at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:181) at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:217) at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188) at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125) at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94) at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129) at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:609) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:510) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107) at weblogic.servlet.internal.EventsManager$FireContextListenerAction.run(EventsManager.java:705) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:326) at weblogic.security.service.SecurityManager.runAsForUserCode(SecurityManager.java:197) at weblogic.servlet.provider.WlsSecurityProvider.runAsForUserCode(WlsSecurityProvider.java:203) at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:71) at weblogic.servlet.internal.EventsManager.executeContextListener(EventsManager.java:251) at weblogic.servlet.internal.EventsManager.notifyContextCreatedEvent(EventsManager.java:204) 请weblogic大神指点迷津，困扰好久了

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [spring-mybatis.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [F:\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\SimulatedMarket\WEB-INF\classes\com\iquant\simulated\mapping\StrategySystemAccountDao.xml]'; nested exception is 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 'com.iquant.simulated.entity.StrategySystemAccount'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.iquant.simulated.entity.StrategySystemAccount mybatis配置： <!-- 自动扫描 --> <context:component-scan base-package="com.iquant.simulated.*" /> <!-- 引入配置文件 --> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location" value="classpath:jdbc.properties" /> </bean> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${datasource.driver}" /> <property name="url" value="${datasource.url}" /> <property name="username" value="${datasource.username}" /> <property name="password" value="${datasource.password}" /> <!-- 初始化连接大小 --> <property name="initialSize" value="${datasource.initialSize}"></property> <!-- 连接池最大数量 --> <property name="maxActive" value="${datasource.maxActive}"></property> <!-- 连接池最大空闲 --> <property name="maxIdle" value="${datasource.maxIdle}"></property> <!-- 连接池最小空闲 --> <property name="minIdle" value="${datasource.minIdle}"></property> <!-- 获取连接最大等待时间 --> <property name="maxWait" value="${datasource.maxWait}"></property> </bean> <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!-- 自动扫描mapping.xml文件 --> <property name="mapperLocations" value="classpath:com/iquant/simulated/mapping/*.xml"></property> </bean> <!-- DAO接口所在包名，Spring会自动查找其下的类 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.iquant.simulated.dao" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean> <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> 找了一天，实在不知道错哪了，求大神指点一二感激不尽啊！

代码 public void addYzToken(){ String refreshToken=""; try { refreshToken=tokenDao.getLastYzToken().getRefreshToken(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } System.out.println(refreshToken+"---"); } 异常信息： java.lang.NullPointerException at com.sinowel.job.RefreshTokenTask.addYzToken(RefreshTokenTask.java:113) 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.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:64) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:53) at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744) spring 配置 <!-- MyBatis SqlSessionFactory注入 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="configLocation" value="classpath:db/sqlMapConfig.xml" /> <property name="mapperLocations" value="classpath:mybatis/com/sinowel/data/**/*.xml" /> <property name="dataSource" ref="dataSource" /> </bean> <!--MyBatis SqlSessionTemplate注入 --> <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate"> <!-- <property name="sqlSessionFactory" ref="sqlSessionFactory" /> --> <constructor-arg index="0" ref="sqlSessionFactory"></constructor-arg> </bean> <!--自定义commonDao注入 --> <bean id="dao" class="com.sinowel.core.dao.ibatis.IbatisDao"> <property name="sqlSessionTemplate" ref="sqlSessionTemplate" /> </bean> 求大神指点

INFO {dataSource-1} inited INFO {dataSource-1} closed 15:58:45.904 [RMI TCP Connection(2)-127.0.0.1] ERROR org.springframework.web.context.ContextLoader - Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'adminCfgService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.westar.core.service.FinancialService com.westar.core.service.AdminCfgService.financialService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'financialService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: ……(省略）…… com.westar.core.service.FlowDesignService.cusActivitService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cusActivitService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: org.activiti.engine.RuntimeService com.westar.core.service.CusActivitService.runtimeService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'processEngineFactory': FactoryBean threw exception on object creation; nested exception is org.activiti.engine.ActivitiException: couldn't deduct database type from database product name 'DM DBMS' 我引入了达梦数据库连接的驱动jar包，并重新配置了文件jdbc文件的连接方式；希望大神指点一下，万分感谢！！！

在学习Spring的有关JDBCTemplater时，出现no suitable driver异常！ ### 代码如下： IOC容器配置： ```xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd"> <!-- 配置C3P0数据源 --> <bean id="DataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="user" value="root"></property> <property name="password" value=""></property> <property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/test"></property> <property name="driverClass" value="com.mysql.jdbc.Driver"></property> <property name="initialPoolSize" value="10"></property> <property name="maxPoolSize" value="10" /> </bean> </beans> ``` 测试代码： ```java public class Tset { public static void main(String[] args) { ApplicationContext context = new ClassPathXmlApplicationContext("applictionContext.xml"); DataSource dataSource = (DataSource) context.getBean("DataSource"); try { System.out.println("数据库连接成功"+dataSource.getConnection()); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } ``` Maven依赖： ```xml <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>org.springframework.samples</groupId> <artifactId>JDBCTEst</artifactId> <version>0.0.1-SNAPSHOT</version> <properties> <!-- Generic properties --> <java.version>1.6</java.version> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <!-- Spring --> <spring-framework.version>3.2.3.RELEASE</spring-framework.version> <!-- Hibernate / JPA --> <hibernate.version>4.2.1.Final</hibernate.version> <!-- Logging --> <logback.version>1.0.13</logback.version> <slf4j.version>1.7.5</slf4j.version> <!-- Test --> <junit.version>4.11</junit.version> </properties> <dependencies> <!-- Spring and Transactions --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring-framework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring-framework.version}</version> </dependency> <!-- Logging with SLF4J & LogBack --> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${slf4j.version}</version> <scope>compile</scope> </dependency> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-classic</artifactId> <version>${logback.version}</version> <scope>runtime</scope> </dependency> <!-- Hibernate --> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-entitymanager</artifactId> <version>${hibernate.version}</version> </dependency> <!-- Test Artifacts --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring-framework.version}</version> <scope>test</scope> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>${junit.version}</version> <scope>test</scope> </dependency> <dependency> <groupId>com.mchange</groupId> <artifactId>c3p0</artifactId> <version>0.9.5-pre8</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.26</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>3.0.5.RELEASE</version> </dependency> </dependencies> </project> ``` 通过如上代码的运行会出现no suitable driver异常，但将mysql驱动程序配置到`java bulid path`中，代码运行成功！ 请大神指点，为什么通过maven依赖配置mysql驱动程序，程序运行不成功。但将驱动加入`java bulid path`就可以运行？

网上都说是hibernate里针对实体类查询，比如user表，实体类为User，则hql语句应该是“from User u where u.uid=?”这样，大多错误都是因为User写成了表名user。 我已经仔细检查了许多遍，我的情况不是这个。 hql语句已经修改好，但仍然报Category is not mapped 下面贴一下代码，求大神指点一下。 Category实体类： ``` package com.models; public class Category { private String cid; private String cname; public String getCid() { return cid; } public void setCid(String cid) { this.cid = cid; } public String getCname() { return cname; } public void setCname(String cname) { this.cname = cname; } } ``` 映射文件： ``` <?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <!-- Generated 2018-12-4 14:57:10 by Hibernate Tools 3.5.0.Final --> <hibernate-mapping> <class name="com.models.Category" table="CATEGORY"> <id name="cid" type="java.lang.String"> <column name="cid" /> <generator class="native" /> </id> <property name="cname" type="java.lang.String"> <column name="canme" /> </property> </class> </hibernate-mapping> ``` hibernate配置文件： ``` <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory name="sessionFactory"> <property name="hibernate.connection.driver_class">org.gjt.mm.mysql.Driver</property> <property name="hibernate.connection.password">123456</property> <property name="hibernate.connection.url">jdbc:mysql:///bookstore</property> <property name="hibernate.connection.username">root</property> <property name="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property> <property name="show_sql">true</property> <mapping resource="com/models/User.hbm.xml"/> <mapping resource="com/models/Product.hbm.xml"/> <mapping resource="com/models/Order.hbm.xml"/> <mapping resource="com/models/OrderItem.hbm.xml"/> <mapping resource="com/models/Category.hbm.xml"/> </session-factory> </hibernate-configuration> ``` CategoryDao方法： ``` ······ public Category findById(String cid) throws Exception { // TODO Auto-generated method stub QueryRunner qr = new QueryRunner(DataSourceUtils.getDataSource()); String hql = "from Category where cid = ?"; BaseDaoImpl<Category> bdi=new BaseDaoImpl<Category>(); String[] param= {cid}; return bdi.findOne(hql, param); } ············ ``` 报错信息： Message org.hibernate.hql.internal.ast.QuerySyntaxException: Category is not mapped [from Category where cid = ?] Description The server encountered an unexpected condition that prevented it from fulfilling the request. Exception java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: Category is not mapped [from Category where cid = ?] org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:138) org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181) org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188) org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:713) org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:23) com.dao.impl.BaseDaoImpl.findOne(BaseDaoImpl.java:128) com.dao.impl.CategoryDaoImpl.findById(CategoryDaoImpl.java:44) com.actions.AdminCategoryAction.findById(AdminCategoryAction.java:81) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) java.lang.reflect.Method.invoke(Unknown Source) ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:897) ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1299) ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68) com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117) com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108) ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1375) ognl.ASTMethod.getValueBody(ASTMethod.java:91) ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212) ognl.SimpleNode.getValue(SimpleNode.java:258) ognl.Ognl.getValue(Ognl.java:470) ognl.Ognl.getValue(Ognl.java:434) com.opensymphony.xwork2.ognl.OgnlUtil$3.execute(OgnlUtil.java:398) com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecuteMethod(OgnlUtil.java:450) com.opensymphony.xwork2.ognl.OgnlUtil.callMethod(OgnlUtil.java:396) com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:430) com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:290) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:251) org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:168) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265) org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:140) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54) org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:575) org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81) org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99) Root Cause org.hibernate.hql.internal.ast.QuerySyntaxException: Category is not mapped [from Category where cid = ?] org.hibernate.hql.internal.ast.QuerySyntaxException.generateQueryException(QuerySyntaxException.java:79) org.hibernate.QueryException.wrapWithQueryString(QueryException.java:103) org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:219) org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:143) org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:119) org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:80) org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:153) org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:595) org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:704) org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:23) com.dao.impl.BaseDaoImpl.findOne(BaseDaoImpl.java:128) com.dao.impl.CategoryDaoImpl.findById(CategoryDaoImpl.java:44) com.actions.AdminCategoryAction.findById(AdminCategoryAction.java:81) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) java.lang.reflect.Method.invoke(Unknown Source) ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:897) ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1299) ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68) com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117) com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108) ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1375) ognl.ASTMethod.getValueBody(ASTMethod.java:91) ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212) ognl.SimpleNode.getValue(SimpleNode.java:258) ognl.Ognl.getValue(Ognl.java:470) ognl.Ognl.getValue(Ognl.java:434) com.opensymphony.xwork2.ognl.OgnlUtil$3.execute(OgnlUtil.java:398) com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecuteMethod(OgnlUtil.java:450) com.opensymphony.xwork2.ognl.OgnlUtil.callMethod(OgnlUtil.java:396) com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:430) com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:290) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:251) org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:168) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265) org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:140) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54) org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:575) org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81) org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99) Root Cause org.hibernate.hql.internal.ast.QuerySyntaxException: Category is not mapped org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:169) org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:91) org.hibernate.hql.internal.ast.tree.FromClause.addFromElement(FromClause.java:79) org.hibernate.hql.internal.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:331) org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3695) org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3584) org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:720) org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:576) org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:313) org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:261) org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:271) org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:191) org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:143) org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:119) org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:80) org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:153) org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:595) org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:704) org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:23) com.dao.impl.BaseDaoImpl.findOne(BaseDaoImpl.java:128) com.dao.impl.CategoryDaoImpl.findById(CategoryDaoImpl.java:44) com.actions.AdminCategoryAction.findById(AdminCategoryAction.java:81) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) java.lang.reflect.Method.invoke(Unknown Source) ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:897) ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1299) ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68) com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117) com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108) ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1375) ognl.ASTMethod.getValueBody(ASTMethod.java:91) ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212) ognl.SimpleNode.getValue(SimpleNode.java:258) ognl.Ognl.getValue(Ognl.java:470) ognl.Ognl.getValue(Ognl.java:434) com.opensymphony.xwork2.ognl.OgnlUtil$3.execute(OgnlUtil.java:398) com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecuteMethod(OgnlUtil.java:450) com.opensymphony.xwork2.ognl.OgnlUtil.callMethod(OgnlUtil.java:396) com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:430) com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:290) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:251) org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:168) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265) org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:140) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54) org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:575) org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81) org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99) Note The full stack trace of the root cause is available in the server logs.

项目使用了Springboot（以下简称sb），然后按照规则，它是可以支持多配置文件的 然后我在项目中按照常规的配置方法，使用了一下三个配置文件： application.properties application-dev.properties application-prod.propertis 重点问题如下： 在项目初始搭建阶段，只引用了sb的基本框架，使用了maven来管理的，application文件里面配置了spring.profiles.active=dev 可以正确的读取到里面的参数，如：默认端口为8080，我改为8888，是可以被使用的， 后来由于项目需要，我从pom文件里面添加了各种项目所需框架后，发现启动报错，由于线下环境的数据库地址和线上的环境是不同的，所以数据库地址，账号，密码的配置放在了dev（开发环境）和prod（线上环境）里，查看报错信息提示配置类里面的@Value(${spring.database.url})找不到dev.pro配置文件里面的spring.database.url参数，开发环境配置的端口为8888，此时端口号也改回了默认的8080，明显是dev文件无法读取，然后我将开发环境的配置参数都copy到了总配置文件，而总配置文件application.properties里面的参数是可以被正常读取的，数据库也正常连接上了，想问问有没有哪位大神遇到或者比较熟悉这种配置的能给指点一下

最近刚刚开始做SSH三大框架整合，搭建了好几天的开发环境，就卡在了Spring与Hibernate 整合上，  TestService.java package com.zyf.test; import javax.annotation.Resource; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.springframework.stereotype.Controller; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import cn.zyf.pj.domain.User; @Service public class TestService { @Resource private SessionFactory sessionFactory; @Transactional public void saveTwoUsers() { Session session = sessionFactory.getCurrentSession(); session.save(new User()); session.save(new User()); } } TestSpring.java package com.zyf.test; import org.hibernate.SessionFactory; import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class TestSpring { private ApplicationContext ac= new ClassPathXmlApplicationContext("applicationContext.xml"); //测试sessionFactory @Test public void testSessionFactory() throws Exception{ SessionFactory sessionFactory =(SessionFactory)ac.getBean("sessionFactory"); System.out.println(sessionFactory.openSession()); } //测试事物 @Test public void testSaveUsers(){ TestService ts=(TestService) ac.getBean("TestService"); ts.saveTwoUsers(); } } Hibernate.cfg.xml <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <!-- 数据连接信息 <property name="hibernate.connection.url">jdbc:mysql:///pj</property> <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> <property name="hibernate.connection.username">root</property> <property name="hibernate.connection.password">abc123</property> --> <property name="hibernate.dialect"> org.hibernate.dialect.MySQL5InnoDBDialect </property> <!-- 其他配置信息 --> <property name="show_sql">true</property> <property name="hbm2ddl.auto">update</property> <mapping resource="cn/zyf/pj/domain/User.hbm.xml" /> </session-factory> </hibernate-configuration> applicationContext.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> <!-- 自动扫描与装配bean --> <context:component-scan base-package="cn.zyf.pj" annotation-config="true"></context:component-scan> <!-- 导入外部的properties配置文件 --> <context:property-placeholder location="classpath:jdbc.properties"/> <!-- 配置数据库连接池 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <!-- =========== 数据库连接信息 =========== --> <property name="jdbcUrl" value="${jdbcUrl}"></property> <property name="driverClass" value="${driverClass}"></property> <property name="user" value="${username}"></property> <property name="password" value="${password}"></property> <!-- =========== 连接池的管理配置 =========== --> <!--初始化时获取三个连接，取值应在minPoolSize与maxPoolSize之间。Default: 3 --> <property name="initialPoolSize" value="3"></property> <!--连接池中保留的最小连接数。Default: 3 --> <property name="minPoolSize" value="3"></property> <!--连接池中保留的最大连接数。Default: 15 --> <property name="maxPoolSize" value="5"></property> <!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 --> <property name="acquireIncrement" value="3"></property> <!-- 控制数据源内加载的PreparedStatements数量。如果maxStatements与maxStatementsPerConnection均为0，则缓存被关闭。Default: 0 --> <property name="maxStatements" value="8"></property> <!--maxStatementsPerConnection定义了连接池内单个连接所拥有的最大缓存statements数。Default: 0 --> <property name="maxStatementsPerConnection" value="5"></property> <!--最大空闲时间,1800秒内未使用则连接被丢弃。若为0则永不丢弃。Default: 0 --> <property name="maxIdleTime" value="1800"></property> </bean> <!-- 配置SessionFactory --> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource"></property> <property name="configLocation" value="classpath:hibernate.cfg.xml"></property> </bean> <!-- 配置声明式的事务管理（采用基于注解的方式） --> <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"></property> </bean> <tx:annotation-driven transaction-manager="txManager"/> </beans> TestSpring.java package com.zyf.test; import org.hibernate.SessionFactory; import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class TestSpring { private ApplicationContext ac= new ClassPathXmlApplicationContext("applicationContext.xml"); //测试sessionFactory @Test public void testSessionFactory() throws Exception{ SessionFactory sessionFactory =(SessionFactory)ac.getBean("sessionFactory"); System.out.println(sessionFactory.openSession()); } //测试事物 @Test public void testSaveUsers(){ TestService ts=(TestService) ac.getBean("TestService"); ts.saveTwoUsers(); } } 对TestSpring进行单元测试，第一个方法正常执行，第二个方法报错No bean named 'TestService' is defined，并且在数据库中自动生成test_users表，困扰了好久了，麻烦大神指点一下！！！！

感觉全世界营销文都在推Python，但是找不到工作的话，又有哪个机构会站出来给我推荐工作？ 笔者冷静分析多方数据，想跟大家说：关于超越老牌霸主Java，过去几年间Python一直都被寄予厚望。但是事实是虽然上升趋势，但是国内环境下，一时间是无法马上就超越Java的，也可以换句话说：超越Java只是时间问题罢。 太嚣张了会Python的人!找工作拿高薪这么简单？ https://edu....

今年，我也32了 ，为了不给大家误导，咨询了猎头、圈内好友，以及年过35岁的几位老程序员……舍了老脸去揭人家伤疤……希望能给大家以帮助，记得帮我点赞哦。 目录： 你以为的人生 一次又一次的伤害 猎头界的真相 如何应对互联网行业的「中年危机」 一、你以为的人生 刚入行时，拿着傲人的工资，想着好好干，以为我们的人生是这样的： 等真到了那一天，你会发现，你的人生很可能是这样的： ...

分享外包的组织架构，盈利模式，亲身经历，以及根据一些外包朋友的反馈，写了这篇文章 ，希望对正在找工作的老铁有所帮助

何来 我，一个双非本科弟弟，有幸在 19 届的秋招中得到前东家华为（以下简称 hw）的赏识，当时秋招签订就业协议，说是入了某 java bg，之后一系列组织架构调整原因等等让人无法理解的神操作，最终毕业前夕，被通知调往其他 bg 做嵌入式开发（纯 C 语言）。 由于已至于校招末尾，之前拿到的其他 offer 又无法再收回，一时感到无力回天，只得默默接受。 毕业后，直接入职开始了嵌入式苦旅，由于从未...

文章目录Java概述何为编程什么是Javajdk1.5之后的三大版本JVM、JRE和JDK的关系什么是跨平台性？原理是什么Java语言有哪些特点什么是字节码？采用字节码的最大好处是什么什么是Java程序的主类？应用程序和小程序的主类有何不同？Java应用程序与小程序之间有那些差别？Java和C++的区别Oracle JDK 和 OpenJDK 的对比基础语法数据类型Java有哪些数据类型switc...

今天下午在朋友圈看到很多人都在发github的羊毛，一时没明白是怎么回事。 后来上百度搜索了一下，原来真有这回事，毕竟资源主义的羊毛不少啊，1000刀刷爆了朋友圈！不知道你们的朋友圈有没有看到类似的消息。 这到底是啥情况？ 微软开发者平台GitHub 的一个区块链项目 Handshake ，搞了一个招募新会员的活动，面向GitHub 上前 25万名开发者派送 4,246.99 HNS币,大约价...

前言: 如何悄悄的打开朋友的摄像头，看看她最近过的怎么样，嘿嘿！这次让我带你们来实现这个功能。 注： 这个程序仅限在朋友之间开玩笑，别去搞什么违法的事情哦。 代码 发送邮件 使用python内置的email模块即可完成。导入相应的代码封装为一个send函数，顺便导入需要导入的包 注： 下面的代码有三处要修改的地方，两处写的qq邮箱地址，还有一处写的qq邮箱授权码，不知道qq邮箱授权码的可以去百度一...

从来没讲过运维，因为我觉得运维这种东西不需要太多的知识面，然后我一个做了运维朋友告诉我大错特错，他就是从3K的运维一步步到40K的，甚至笑着说：我现在感觉自己什么都能做。 既然讲，就讲最重要的吧。 监控是整个运维乃至整个产品生命周期中最重要的一环，事前及时预警发现故障，事后提供详实的数据用于追查定位问题。目前业界有很多不错的开源产品可供选择。选择一款开源的监控系统，是一个省时省力、效率最高的方...

一、菱形继承 在介绍虚继承之前介绍一下菱形继承 概念：A作为基类，B和C都继承与A。最后一个类D又继承于B和C，这样形式的继承称为菱形继承 菱形继承的缺点： 数据冗余：在D中会保存两份A的内容 访问不明确（二义性）：因为D不知道是以B为中介去访问A还是以C为中介去访问A，因此在访问某些成员的时候会发生二义性 缺点的解决： 数据冗余：通过下面“虚继承”技术来解决（见下） 访问...

跳槽几乎是每个人职业生涯的一部分，很多HR说“三年两跳”已经是一个跳槽频繁与否的阈值了，可为什么市面上有很多程序员不到一年就跳槽呢？他们不担心影响履历吗？ PayScale之前发布的**《员工最短任期公司排行榜》中，两家码农大厂Amazon和Google**，以1年和1.1年的员工任期中位数分列第二、第四名。 PayScale:员工最短任期公司排行榜 意外的是，任期中位数极小的这两家公司，薪资...

数据结构与算法思维导图

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互联网公司工作，很难避免不和黑客们打交道，我呆过的两家互联网公司，几乎每月每天每分钟都有黑客在公司网站上扫描。有的是寻找 Sql 注入的缺口，有的是寻找线上服务器可能存在的漏洞，大部分都...

loonggg读完需要3分钟速读仅需 1 分钟大家好，我是你们的校长。我之前讲过，这年头，只要肯动脑，肯行动，程序员凭借自己的技术，赚钱的方式还是有很多种的。仅仅靠在公司出卖自己的劳动时...

刚才邻居打了个电话说：喂小灰，你家wifi的密码是多少，我怎么连不上了。 我。。。 我也忘了哎，就找到了一个好办法，分享给大家： 第一种情况：已经连接上的wifi，怎么知道密码？ 打开：控制面板\网络和 Internet\网络连接 然后右击wifi连接的无线网卡，选择状态 然后像下图一样： 第二种情况：前提是我不知道啊，但是我以前知道密码。 此时可以利用dos命令了 1、利用netsh wlan...

最近有个老铁，告诉我说，上班一个月，后悔当初着急入职现在公司了。他之前在美图做手机研发，今年美图那边今年也有一波组织优化调整，他是其中一个，在协商离职后，当时捉急找工作上班，因为有房贷供着，不能没有收入来源。所以匆忙选了一家公司，实际上是一个大型外包公司，主要派遣给其他手机厂商做外包项目。**当时承诺待遇还不错，所以就立马入职去上班了。但是后面入职后，发现薪酬待遇这块并不是HR所说那样，那个HR自...

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原博客再更新，可能就没了，之后将持续更新本篇博客。

提到“程序员”，多数人脑海里首先想到的大约是：为人木讷、薪水超高、工作枯燥…… 然而，当离开工作岗位，撕去层层标签，脱下“程序员”这身外套，有的人生动又有趣，马上展现出了完全不同的A/B面人生！ 不论是简单的爱好，还是正经的副业，他们都干得同样出色。偶尔，还能和程序员的特质结合，产生奇妙的“化学反应”。 @Charlotte：平日素颜示人，周末美妆博主 大家都以为程序媛也个个不修边幅，但我们也许...

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女朋友说：“看你最近挺辛苦的，我送你一个礼物吧。你看看想要什么，我来准备。” 我想了半天，从书到鞋子到电子产品最后到生活用品，感觉自己什么都不缺，然后和她说：“你省省钱吧，我什么都不需要。” 她坚持要送：“不行，你一定要说一个礼物，我想送你东西了。” 于是，我认真了起来，拿起手机，上淘宝逛了几分钟，但还是没能想出来缺点什么，最后实在没办法了：“这样吧，如果你实在想送东西，那你就写一个代理服务器吧”...

腾讯后台面试，面试官问：如何自己实现队列？

有个好朋友ZS，是技术总监，昨天问我：“有一个老下属，跟了我很多年，做事勤勤恳恳，主动性也很好。但随着公司的发展，他的进步速度，跟不上团队的步伐了，有点...

私下里，有不少读者问我：“二哥，如何才能写出一份专业的技术简历呢？我总感觉自己写的简历太烂了，所以投了无数份，都石沉大海了。”说实话，我自己好多年没有写过简历了，但我认识的一个同行，他在阿里，给我说了一些他当年写简历的方法论，我感觉太牛逼了，实在是忍不住，就分享了出来，希望能够帮助到你。 01、简历的本质 作为简历的撰写者，你必须要搞清楚一点，简历的本质是什么，它就是为了来销售你的价值主张的。往深...

当你换槽填坑时，面对一个新的环境。能够快速熟练，上手实现业务需求是关键。但是，哪些因素会影响你快速上手呢？是原有代码写的不够好？还是注释写的不够好？昨夜...

即将毕业的应届毕业生一枚，现在只拿到了两家offer，但最近听到一些消息，其中一个offer，我这个组据说客户很少，很有可能整组被裁掉。 想问大家： 如果我刚入职这个组就被裁了怎么办呢？ 大家都是什么时候知道自己要被裁了的？ 面试软技能指导: BQ/Project/Resume 试听内容： 除了刷题，还有哪些技能是拿到offer不可或缺的要素 如何提升面试软实力：简历, 行为面试，沟通能...

如果世界上都是这种不思进取的软件公司，那别说大部分程序员只会写 3 年代码，恐怕就没有程序员这种职业。

有小伙伴问松哥这个问题，他在上海某公司，在离职了几个月后，前公司的领导联系到他，希望他能够返聘回去，他很纠结要不要回去？ 俗话说好马不吃回头草，但是这个小伙伴既然感到纠结了，我觉得至少说明了两个问题：1.曾经的公司还不错；2.现在的日子也不是很如意。否则应该就不会纠结了。 老实说，松哥之前也有过类似的经历，今天就来和小伙伴们聊聊回头草到底吃不吃。 首先一个基本观点，就是离职了也没必要和老东家弄的苦...

阿里巴巴全球数学竞赛（ Alibaba Global Mathematics Competition）由马云发起，由中国科学技术协会、阿里巴巴基金会、阿里巴巴达摩院共同举办。大赛不设报名门槛，全世界爱好数学的人都可参与，不论是否出身数学专业、是否投身数学研究。 2020年阿里巴巴达摩院邀请北京大学、剑桥大学、浙江大学等高校的顶尖数学教师组建了出题组。中科院院士、美国艺术与科学院院士、北京国际数学...