6 Replies Latest reply on Dec 31, 2006 9:13 AM by fhh

    NPE After adding @RequestParameter to SESSION bean

    Chris Lowe Apprentice

      I added a @RequestParameter to a SESSION scoped bean and this now occurs at session destruction:

      17:26:01,626 ERROR [STDERR] ENCOUNTERED EXCEPTION CALLING: class com.triggersoft.business.MyAccountBean.destroy
      17:26:01,626 ERROR [STDERR] java.lang.NullPointerException
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.util.Parameters.convertMultiValueRequestParameter(Parameters.java:47)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.Component.injectParameters(Component.java:1153)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.Component.inject(Component.java:1116)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.interceptors.BijectionInterceptor.bijectTargetComponent(BijectionInterceptor.java:48)
      17:26:01,626 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor445.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.interceptors.OutcomeInterceptor.interceptOutcome(OutcomeInterceptor.java:23)
      17:26:01,626 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor419.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.interceptors.ConversationInterceptor.endOrBeginLongRunningConversation(ConversationInterceptor.java:51)
      17:26:01,626 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor418.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
      17:26:01,626 ERROR [STDERR] at com.triggersoft.business.LoggedInInterceptor.checkLoggedIn(LoggedInInterceptor.java:62)
      17:26:01,626 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor452.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.interceptors.ManagedEntityIdentityInterceptor.aroundInvoke(ManagedEntityIdentityInterceptor.java:79)
      17:26:01,626 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor448.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.intercept.RootInterceptor.createSeamInvocationContext(RootInterceptor.java:144)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.intercept.RootInterceptor.invokeInContexts(RootInterceptor.java:129)
      17:26:01,626 ERROR [STDERR] at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:102)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:49)
      17:26:01,642 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor420.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:118)
      17:26:01,642 ERROR [STDERR] at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
      17:26:01,642 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      17:26:01,642 ERROR [STDERR] at org.jboss.ejb3.entity.ExtendedPersistenceContextPropagationInterceptor.invoke(ExtendedPersistenceContextPropagationInterceptor.java:57)
      17:26:01,642 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      17:26:01,642 ERROR [STDERR] at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
      17:26:01,642 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      17:26:01,642 ERROR [STDERR] at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
      17:26:01,642 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      17:26:01,642 ERROR [STDERR] at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
      17:26:01,642 ERROR [STDERR] at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:197)
      17:26:01,642 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      17:26:01,642 ERROR [STDERR] at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
      17:26:01,642 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      17:26:01,642 ERROR [STDERR] at org.jboss.ejb3.stateful.StatefulInstanceInterceptor.invoke(StatefulInstanceInterceptor.java:83)
      17:26:01,642 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      17:26:01,642 ERROR [STDERR] at org.jboss.ejb3.stateful.StatefulRemoveInterceptor.invoke(StatefulRemoveInterceptor.java:81)
      17:26:01,642 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      17:26:01,642 ERROR [STDERR] at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
      17:26:01,642 ERROR [STDERR] at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:131)
      17:26:01,642 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      17:26:01,642 ERROR [STDERR] at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
      17:26:01,642 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      17:26:01,642 ERROR [STDERR] at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
      17:26:01,642 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      17:26:01,642 ERROR [STDERR] at org.jboss.ejb3.stateful.StatefulContainer.localInvoke(StatefulContainer.java:203)
      17:26:01,642 ERROR [STDERR] at org.jboss.ejb3.stateful.StatefulLocalProxy.invoke(StatefulLocalProxy.java:98)
      17:26:01,642 ERROR [STDERR] at com.triggersoft.business.$Proxy562.destroy(Unknown Source)
      17:26:01,642 ERROR [STDERR] at com.triggersoft.business.MyAccount$$FastClassByCGLIB$$b080abac.invoke(<generated>)
      17:26:01,642 ERROR [STDERR] at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:45)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.ClientSideInterceptor$1.proceed(ClientSideInterceptor.java:69)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:55)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.interceptors.RemoveInterceptor.removeIfNecessary(RemoveInterceptor.java:39)
      17:26:01,642 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor447.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.interceptors.ExceptionInterceptor.handleExceptions(ExceptionInterceptor.java:38)
      17:26:01,642 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor417.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.interceptors.SynchronizationInterceptor.serialize(SynchronizationInterceptor.java:30)
      17:26:01,642 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor449.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.RootInterceptor.createSeamInvocationContext(RootInterceptor.java:144)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.RootInterceptor.invokeInContexts(RootInterceptor.java:129)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:102)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.ClientSideInterceptor.interceptInvocation(ClientSideInterceptor.java:78)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.intercept.ClientSideInterceptor.intercept(ClientSideInterceptor.java:47)
      17:26:01,642 ERROR [STDERR] at com.triggersoft.business.MyAccount$$EnhancerByCGLIB$$bd4780c0.destroy(<generated>)
      17:26:01,642 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      17:26:01,642 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:102)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.Component.callComponentMethod(Component.java:1793)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.Component.callDestroyMethod(Component.java:1749)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.contexts.Contexts.destroy(Contexts.java:189)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.contexts.Lifecycle.endSession(Lifecycle.java:230)
      17:26:01,642 ERROR [STDERR] at org.jboss.seam.servlet.SeamListener.sessionDestroyed(SeamListener.java:45)
      17:26:01,642 ERROR [STDERR] at org.apache.catalina.session.StandardSession.expire(StandardSession.java:687)
      17:26:01,642 ERROR [STDERR] at org.apache.catalina.session.StandardSession.isValid(StandardSession.java:579)
      17:26:01,642 ERROR [STDERR] at org.apache.catalina.session.ManagerBase.processExpires(ManagerBase.java:678)
      17:26:01,642 ERROR [STDERR] at org.apache.catalina.session.ManagerBase.backgroundProcess(ManagerBase.java:663)
      17:26:01,642 ERROR [STDERR] at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1284)
      17:26:01,642 ERROR [STDERR] at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1569)
      17:26:01,642 ERROR [STDERR] at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1578)
      17:26:01,642 ERROR [STDERR] at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1578)
      17:26:01,642 ERROR [STDERR] at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1558)
      17:26:01,642 ERROR [STDERR] at java.lang.Thread.run(Unknown Source)

      I've moved the @RequestParameter to an EVENT scoped bean and all is well, but I thought I'd raise it anyway as it was an NPE.