Java 异常：org.hibernate.SessionException：会话已经关闭

Exception : org.hibernate.SessionException: Session was already closed

提问by Keval Trivedi

I am developing application using java + spring + hibernate + oracle. when i add the below property in my dispatcher-servlet.xmlfile.

我正在使用 java + spring + hibernate + oracle 开发应用程序。当我在dispatcher-servlet.xml文件中添加以下属性时。

<prop key="hibernate.transaction.auto_close_session">true</prop>

It throws exception as below :

它抛出异常如下：

org.hibernate.SessionException: Session was already closed
at org.hibernate.impl.SessionImpl.close(SessionImpl.java:302)
at org.springframework.orm.hibernate3.SessionFactoryUtils.closeSession(SessionFactoryUtils.java:791)
at org.springframework.orm.hibernate3.SessionFactoryUtils.closeSessionOrRegisterDeferredClose(SessionFactoryUtils.java:777)
at org.springframework.orm.hibernate3.HibernateTransactionManager.doCleanupAfterCompletion(HibernateTransactionManager.java:737)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.cleanupAfterCompletion(AbstractPlatformTransactionManager.java:1011)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:804)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:393)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy354.getMenu4Priv(Unknown Source)
at com.itzcash.easy.reports.controller.SalesDistributionReportController.searchCustomerProfile(SalesDistributionReportController.java:261)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:208)
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:181)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)

if i remove this property no exception is occurred.

如果我删除此属性，则不会发生异常。

My code is like below :

我的代码如下：

  @Service
    Class ABCServiceImpl 
{
    @Transactional
    void methodA()
    {
       // called the method in DAOImpl package -- methodB().
    }

}

@Repository
Class ABCDAOImpl
{
    @Autowired
    SessionFectory s;

    void methodB()
    {
      // hibernate operatoion
    }

}

Thanks in advance.

提前致谢。

回答by Ed Morales

The problem is that you cant call close()twice on a Session, the second time you call the close()method, it will throw that Exception.

问题是您不能close()在 a 上调用两次Session，第二次调用该close()方法时，它会抛出该异常。

By setting auto_closeyou are implicitly closing the session after you use it, so the solution would be removing the close()methods in your code, or just remove that auto_closeconfig and close the sessions manually after using them.

通过设置，auto_close您将在使用后隐式关闭会话，因此解决方案是删除close()代码中的方法，或者仅删除该auto_close配置并在使用它们后手动关闭会话。

回答by RexSmith

If this flag is set to true then session will be automatically closed during the after completion phase of the transaction. Agree with Edward on what you are trying to implicitly close the connection throwing that Exception.

如果此标志设置为 true，则会话将在事务完成后阶段自动关闭。同意 Edward 关于您试图隐式关闭抛出该异常的连接的内容。

回答by user4074470

1. Try to close the connection manually. and
2. use .openSession(); method to open session instead of .getCurrentSession(); no exception comes.

1. 尝试手动关闭连接。和
2. 使用 .openSession(); 打开会话而不是 .getCurrentSession() 的方法；没有例外。