mysql - java.lang.IllegalStateException : Attempting to execute an operation on a closed EntityManagerFactory 错误

Question

我有 Eclipse Indigo，我用它来使用 Glassfish 3 Open Source 开发一个 JSF 2 项目，这个在我的电脑里，然后在我的 EC2 实例里，在 Amazon AWS 里，我为两个 Glassfish 创建了一个 JDBC 连接池来使用我的JPA 实体管理器。

我的项目在本地运行得很好，但是当我部署项目并尝试执行相同的表单时，它会从运行 GlassFIsh 的同一实例 EC2 中运行的数据库中获取一些值。

我收到这条消息:

serverError: class javax.faces.el.E​​valuationException

我正在搜索它，但到目前为止我没有找到任何东西。

我应该做一些配置才能工作吗？

编辑:

这是堆栈跟踪:

javax.faces.FacesException: #{reportc.generateReport}: javax.ejb.EJBException
        at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
        at javax.faces.component.UICommand.broadcast(UICommand.java:315)
        at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
        at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
        at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
        at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
        at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
        at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
        at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
        at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
        at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
        at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
        at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
        at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
        at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
        at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
        at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
        at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
        at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
        at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
        at java.lang.Thread.run(Thread.java:636)
Caused by: javax.faces.el.EvaluationException: javax.ejb.EJBException
        at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
        at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
        ... 32 more
Caused by: javax.ejb.EJBException
        at com.sun.ejb.containers.BaseContainer.processSystemException(BaseContainer.java:5193)
        at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:5091)
        at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4879)
        at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2039)
        at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1990)
        at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:222)
        at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
        at $Proxy225.listLastMinutes(Unknown Source)
        at com.brainset.eao.__EJB31_Generated__LogEAO__Intf____Bean__.listLastMinutes(Unknown Source)
        at com.brainset.controller.ReportControl.getLog(ReportControl.java:234)
        at com.brainset.controller.ReportControl.generateReport(ReportControl.java:49)
        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:616)
        at com.sun.el.parser.AstValue.invoke(AstValue.java:234)
        at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297)
        at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
        at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
        ... 33 more
Caused by: java.lang.IllegalStateException: Attempting to execute an operation on a closed EntityManagerFactory.
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.verifyOpen(EntityManagerFactoryDelegate.java:305)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:276)

编辑 2:这就是我使用 EntityManager 的方式:

@Stateless(mappedName = "logEAO")
@LocalBean
public class LogEAO {
    @PersistenceContext
    private EntityManager em;

    public LogEAO() {}


    public Log find(int id) {
        return em.find(Log.class, id);
    }
    // .. 

Answer 1

如果您使用的是 Glassfish 服务器，则重新启动服务器已帮我完成。