链接已经被关闭的问题，我都快疯了。
公司一个项目使用Webwork+Spring+iBATIS 这个结构来实现的。应用服务器是resin3.0.19 而是数据库是MYSQL5.0。项目在开发过程中一直很正常没有什么大问题，但进入集成测试后发现经常抛出异常。
500 Servlet Exceptionjava.lang.IllegalStateException: connection is closedat com.caucho.sql.UserConnection.getMConn(UserConnection.java:812)at com.caucho.sql.UserConnection.getConnection(UserConnection.java:87)at com.caucho.sql.UserConnection.prepareStatement(UserConnection.java:195)at sun.reflect.GeneratedMethodAccessor109.invoke(Unknown Source)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)at java.lang.reflect.Method.invoke(Method.java:585)at org.springframework.jdbc.datasource.TransactionAwareDataSourceProxy$TransactionAwareInvocationHandler.invoke(TransactionAwareDataSourceProxy.java:168)at $Proxy27.prepareStatement(Unknown Source)at com.ibatis.sqlmap.engine.execution.SqlExecutor.executeQuery(SqlExecutor.java:172)at com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.sqlExecuteQuery(GeneralStatement.java:205)at com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryWithCallback(GeneralStatement.java:173)at com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryForList(GeneralStatement.java:123)at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForList(SqlMapExecutorDelegate.java:614)at com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.queryForList(SqlMapSessionImpl.java:126)at com.ibatis.sqlmap.engine.impl.SqlMapClientImpl.queryForList(SqlMapClientImpl.java:104)at com.ibatis.sqlmap.engine.mapping.statement.PaginatedDataList.getList(PaginatedDataList.java:127)at com.ibatis.sqlmap.engine.mapping.statement.PaginatedDataList.pageTo(PaginatedDataList.java:87)at com.ibatis.sqlmap.engine.mapping.statement.PaginatedDataList.<init>(PaginatedDataList.java:46)at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForPaginatedList(SqlMapExecutorDelegate.java:671)at com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.queryForPaginatedList(SqlMapSessionImpl.java:134)at org.springframework.orm.ibatis.SqlMapClientTemplate$6.doInSqlMapClient(SqlMapClientTemplate.java:273)at org.springframework.orm.ibatis.SqlMapClientTemplate.execute(SqlMapClientTemplate.java:168)at org.springframework.orm.ibatis.SqlMapClientTemplate.queryForPaginatedList(SqlMapClientTemplate.java:271)at net.pingsoft.pledu.basedao.BaseSqlMapDAO.search(BaseSqlMapDAO.java:92)at net.pingsoft.pledu.dao.ibatis.SysSchoolInfoSqlMapDAO.search(SysSchoolInfoSqlMapDAO.java:28)at net.pingsoft.pledu.domain.logic.impl.SchoolServiceImpl.searchSchoolByFilter(SchoolServiceImpl.java:207)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:585)at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:287)at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:165)at $Proxy1.searchSchoolByFilter(Unknown Source)at net.pingsoft.pledu.webwork.action.manage.school.ListSchoolInfoAction.searchByName(ListSchoolInfoAction.java:65)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:585)at com.opensymphony.xwork.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:365)at com.opensymphony.xwork.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:217)at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:191)at net.pingsoft.pledu.webwork.Interceptor.UserRightInterceptor.intercept(UserRightInterceptor.java:53)at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:189)at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:189)at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:189)at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:189)at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:189)at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:189)at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:189)at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:189)at com.opensymphony.xwork.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:100)at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:189)at com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActionProxy.java:113)at com.opensymphony.webwork.dispatcher.DispatcherUtils.serviceAction(DispatcherUtils.java:233)at com.opensymphony.webwork.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:198)at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:70)at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:56)at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:70)at com.opensymphony.webwork.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:78)at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:70)at net.pingsoft.pledu.servlet.GZIPFilter.doFilter(GZIPFilter.java:63)at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:70)at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:178)at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:229)at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:268)at com.caucho.server.port.TcpConnection.run(TcpConnection.java:389)at com.caucho.util.ThreadPool.runTasks(ThreadPool.java:507)at com.caucho.util.ThreadPool.run(ThreadPool.java:433)at java.lang.Thread.run(Thread.java:595)--------------------------------------------Resin-3.0.19 (built Mon, 15 May 2006 04:50:47 PDT)
