使用idea创建SSM项目时数据源配置异常
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异常：org.springframework.jdbc.CannotGetJdbcConnectionException
jdbc.properties关于DB的配置（数据库名是liaody）：
driverClassName=com.mysql.jdbc.Driver password=root username=root url=jdbc:mysql://localhost:3306/liaody?characterEncoding=UTF8
applicationContext.xml关于datasource的配置：
<!-- 配置dataSource -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName">
<value>${driverClassName}</value>
</property>
<property name="username">
<value>${username}</value>
</property>
<property name="password">
<value>${password}</value>
</property>
<property name="url">
<value>${url}</value>
</property>
</bean>
启动Tomcat，访问DB，抛出异常：
1 严重: Servlet.service() for servlet [springmvc] in context with path [] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: 2 ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user ‘Administrator‘@‘localhost‘ (using password: YES)) 3 ### The error may exist in UserInfo-mapper.xml 4 ### The error may involve com.springmvc.service.UserInfoService.getUser 5 ### The error occurred while executing a query 6 ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user ‘Administrator‘@‘localhost‘ (using password: YES))] with root cause 7 java.sql.SQLException: Access denied for user ‘Administrator‘@‘localhost‘ (using password: YES) 8 at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1086) 9 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4237) 10 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4169) 11 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:928) 12 at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1750) 13 at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1290) 14 at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2502) 15 at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2535) 16 at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2320) 17 at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:834) 18 at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46) 19 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 20 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) 21 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) 22 at java.lang.reflect.Constructor.newInstance(Constructor.java:423) 23 at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) 24 at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) 25 at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:347) 26 at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:38) 27 at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:294) 28 at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:1247) 29 at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1221) 30 at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880) 31 at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) 32 at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) 33 at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:81) 34 at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:67) 35 at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279) 36 at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72) 37 at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59) 38 at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267) 39 at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137) 40 at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96) 41 at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77) 42 at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108) 43 at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102) 44 at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:66) 45 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 46 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 47 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 48 at java.lang.reflect.Method.invoke(Method.java:498) 49 at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358) 50 at com.sun.proxy.$Proxy35.selectOne(Unknown Source) 51 at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:163) 52 at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:68) 53 at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52) 54 at com.sun.proxy.$Proxy36.getUser(Unknown Source) 55 at com.springmvc.controller.LoginAndRegistController.loginExec(LoginAndRegistController.java:38) 56 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 57 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 58 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 59 at java.lang.reflect.Method.invoke(Method.java:498) 60 at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) 61 at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) 62 at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) 63 at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:777) 64 at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:706) 65 at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) 66 at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943) 67 at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877) 68 at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) 69 at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868) 70 at javax.servlet.http.HttpServlet.service(HttpServlet.java:647) 71 at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) 72 at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 73 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) 74 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 75 at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) 76 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 77 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) 78 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 79 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) 80 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) 81 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) 82 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 83 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) 84 at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936) 85 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 86 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) 87 at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004) 88 at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) 89 at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) 90 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 91 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 92 at java.lang.Thread.run(Thread.java:745)
异常的解决：jdbc.properties中关于DB的配置部分，加上jdbc.:
jdbc.driverClassName=com.mysql.jdbc.Driver jdbc.password=root jdbc.username=root jdbc.url=jdbc:mysql://localhost:3306/liaody?characterEncoding=UTF8
修改applicationContext.xml:
<!-- 配置dataSource -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName">
<value>${jdbc.driverClassName}</value>
</property>
<property name="username">
<value>${jdbc.username}</value>
</property>
<property name="password">
<value>${jdbc.password}</value>
</property>
<property name="url">
<value>${jdbc.url}</value>
</property>
</bean>
异常原因：数据源配置错误。参考Spring官方文档的数据源配置后解决。
虽然解决了该错误，但仍然有一个疑问，异常时试图登录DB的用户名是Administrator而不是root，这一点百思不得其解。有哪位大神知道什么回事么。
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