从 before_completion 同步操作捕获异常：org.hibernate.SessionException：会话已关闭！

Question

我正在使用 Spring 和 Hibernate Envers 将记录插入审计表中。当Wicket应用程序（Web）调用服务时，我看到Spring使用OpenSessionViewFiler并将flushmode设置为Manual。 AuditProcess 类的 doBeforeTransactionCompletion 方法中的以下代码：

  if (FlushMode.isManualFlushMode(session.getFlushMode())) {

IsManual 变为 true，然后它使用临时会话将记录插入审计表中。它运行良好。

我们在WebSphere中还有另一个应用EJB，Spring，Hibernate。当我们从 EJB 调用相同的服务时，刷新模式变为自动，并且在上述方法中的 AuditProcess 类中失败并出现错误：

"WTRN0074E: Exception caught from before_completion synchronization 
operation: org.hibernate.SessionException: Session is closed!"

请让我知道您解决此问题的想法：

[4/23/11 17:42:53:582 CDT] 00000023 RegisteredSyn E   WTRN0074E: Exception 
caught from before_completion synchronization operation: 
org.hibernate.SessionException: Session is closed!
  at org.hibernate.impl.AbstractSessionImpl.errorIfClosed(AbstractSessionImpl.java:72)
  at org.hibernate.impl.SessionImpl.contains(SessionImpl.java:1739)
  at org.hibernate.envers.synchronization.AuditProcess.getCurrentRevisionData(AuditProcess.java:125)
  at org.hibernate.envers.synchronization.AuditProcess.executeInSession(AuditProcess.java:104)
  at org.hibernate.envers.synchronization.AuditProcess.doBeforeTransactionCompletion(AuditProcess.java:152)
  at org.hibernate.engine.ActionQueue$BeforeTransactionCompletionProcessQueue.beforeTransactionCompletion(ActionQueue.java:543)
  at org.hibernate.engine.ActionQueue.beforeTransactionCompletion(ActionQueue.java:216)
  at org.hibernate.impl.SessionImpl.beforeTransactionCompletion(SessionImpl.java:571)
  at org.hibernate.jdbc.JDBCContext.beforeTransactionCompletion(JDBCContext.java:250)
  at org.hibernate.transaction.synchronization.CallbackCoordinator.beforeCompletion(CallbackCoordinator.java:125)
  at org.hibernate.transaction.synchronization.HibernateSynchronizationImpl.beforeCompletion(HibernateSynchronizationImpl.java:51)
  at org.hibernate.transaction.WebSphereExtendedJTATransactionLookup$TransactionManagerAdapter$TransactionAdapter$1.invoke(WebSphereExtendedJTATransactionLookup.java:209)
  at $Proxy44.beforeCompletion(Unknown Source)
  at com.ibm.ws.jtaextensions.SynchronizationCallbackWrapper.beforeCompletion(SynchronizationCallbackWrapper.java:65)
  at com.ibm.ws.Transaction.JTA.RegisteredSyncs.distributeBefore(RegisteredSyncs.java:242)
  at com.ibm.ws.Transaction.JTA.TransactionImpl.prePrepare(TransactionImpl.java:2408)
  at com.ibm.ws.Transaction.JTA.TransactionImpl.stage1CommitProcessing(TransactionImpl.java:1641)
  at com.ibm.ws.Transaction.JTA.TransactionImpl.processCommit(TransactionImpl.java:1612)
  at com.ibm.ws.Transaction.JTA.TransactionImpl.commit(TransactionImpl.java:1547)
  at com.ibm.ws.Transaction.JTA.TranManagerImpl.commit(TranManagerImpl.java:247)
  at com.ibm.ws.Transaction.JTA.TranManagerSet.commit(TranManagerSet.java:167)
  at com.ibm.ws.uow.UOWManagerImpl.uowCommit(UOWManagerImpl.java:1055)
  at com.ibm.ws.uow.UOWManagerImpl.uowEnd(UOWManagerImpl.java:1025)
  at com.ibm.ws.uow.UOWManagerImpl.runUnderNewUOW(UOWManagerImpl.java:975)
  at com.ibm.ws.uow.UOWManagerImpl.runUnderUOW(UOWManagerImpl.java:509)
  at org.springframework.transaction.jta.WebSphereUowTransactionManager.execute(WebSphereUowTransactionManager.java:281)
  at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:127)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
  at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
  at $Proxy66.getAocBufferData(Unknown Source)
  at com.cvscaremark.links.submitorder.SubmitOrderFacade.executeSubmitOrderServices(SubmitOrderFacade.java:59)
  at com.cvscaremark.links.submitorder.SubmitOrderBean.processSubmitOrder(SubmitOrderBean.java:129)
  at com.cvscaremark.links.submitorder.SubmitOrderBean.ejbTimeout(SubmitOrderBean.java:102)
  at com.ibm.ejs.container.TimedObjectWrapper.ejbTimeout(TimedObjectWrapper.java:90)
  at com.ibm.ejs.container.TimerTaskHandler.doWork(TimerTaskHandler.java:265)
  at com.ibm.ws.scheduler.AlarmListener.executeTaskWithNotification(AlarmListener.java:795)
  at com.ibm.ws.scheduler.AlarmListener.access$700(AlarmListener.java:120)
  at com.ibm.ws.scheduler.AlarmListener$TaskWork.doWork(AlarmListener.java:426)
  at com.ibm.ws.scheduler.AlarmListener$TaskWork.run(AlarmListener.java:212)
  at com.ibm.ws.asynchbeans.J2EEContext.run(J2EEContext.java:782)
  at com.ibm.ws.asynchbeans.ExecutionContextImpl.go(ExecutionContextImpl.java:85)
  at com.ibm.ws.scheduler.AlarmListener.fireTask(AlarmListener.java:1400)
  at com.ibm.ws.scheduler.AlarmListener.fired(AlarmListener.java:1318)
  at com.ibm.ws.asynchbeans.AlarmImpl.callListenerMethod(AlarmImpl.java:338)
  at com.ibm.ws.asynchbeans.timer.GenericTimer.run(GenericTimer.java:216)
  at com.ibm.ws.asynchbeans.J2EEContext.run(J2EEContext.java:1150)
  at com.ibm.ws.asynchbeans.AlarmImpl.runListenerAsCJWork(AlarmImpl.java:173)
  at com.ibm.ws.asynchbeans.am._Alarm.fireAlarm(_Alarm.java:332)
  at com.ibm.ws.asynchbeans.am._Alarm.run(_Alarm.java:229)
  at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1497)

感谢您的帮助， 文卡特

Answer 1

没有提到有关会话创建的详细信息。

使用 getCurrentSession() 创建的会话将返回绑定到当前正在运行的线程的会话。脸红了&自动关闭。如果使用了 openSession()，那么必须在flush & 之后手动查看。 commit 等。

您可以尝试使用以下配置之一。

• 在 hibernate.cfg.xml 中，将属性 current_session_context_class 更改为 托管。
• 可以将刷新模式显式设置为 session.setFlushMode(FlushMode.MANUAL)。