Since moving to Seam 1.1 (b1, b2 and cr1) I've been getting
NullPointerExceptions when using the @RequestParameter annotation - I can
ignore these errors and the application continues to work. However, it is
filling up the logs.
It appears to occur when destroying a component that has been annotated with
@RequestParameter. What is really bizarre is that the line number being
reported (line 97) is completely wrong - Parameters.java only has 74 lines in
it. As far as I can tell its the only org.jboss.seam.util.Parameters class in
the classpath, and decompiling the class in the class path shows that there is
no line 97 (so is consistent with the source).
I can only think I've done something horribly wrong, but I have no idea what!
Any help on this one would be gratefully received. An example component and
stacktrace is listed below.
Thanks in advance, Peter
loadMember component:
| @Stateful
| @Name("loadMember")
| @Scope(ScopeType.CONVERSATION)
| @Intercept(InterceptionType.ALWAYS)
|
| public class LoadMemberAction implements LoadMember {
|
| private static final Logger LOG =
Logger.getLogger(LoadMemberAction.class);
|
| @PersistenceContext
| private EntityManager em;
|
| @In(required=false)
| @Out(required=false, scope = ScopeType.CONVERSATION)
| private Client clientProfile;
|
| @RequestParameter
| private String memberId;
|
| @Factory("clientProfile")
| @Begin(nested=true)
| public void loadProfile() {
| if (this.memberId != null) {
| clientProfile = getClient(this.memberId);
| }
| }
|
| private Client getClient(String clientId) {
| Client client = null;
| try {
| // Find the recruiter using the recruiter id from the URL
| client = em.find(Client.class, clientId);
| if ( !client.getPerson().getUser().isInRole(RoleType.Recruiter,
RoleType.Directory) ) {
| throw new IllegalStateException("Client " + client.getClientId() +
" does not exist in the permitted role.") ;
| } else {
| LOG.debug("Loaded client from url parameter: " +
client.getClientId() + " - " + client.getCompanyName());
| }
| } catch (Exception ex) {
| LOG.error("Could not load client from URL parameter (clientId=" +
clientId + ").", ex);
| }
| return client ;
| }
|
| @Remove
| @Destroy
| public void destroy() {
| // empty
| }
|
| }
|
Stack trace
| 24-11 09:04:43 WARN [Contexts] Could not destroy component: loadMember
| javax.ejb.EJBException: java.lang.NullPointerException
| at
org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:69)
| at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
| at
org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:197)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at
org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at
org.jboss.ejb3.stateful.StatefulInstanceInterceptor.invoke(StatefulInstanceInterceptor.java:81)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at
org.jboss.ejb3.stateful.StatefulRemoveInterceptor.invoke(StatefulRemoveInterceptor.java:81)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at
org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:78)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at
org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at
org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at
org.jboss.ejb3.stateful.StatefulContainer.localInvoke(StatefulContainer.java:189)
| at
org.jboss.ejb3.stateful.StatefulLocalProxy.invoke(StatefulLocalProxy.java:98)
| at $Proxy95.destroy(Unknown Source)
| at
uk.co.iblocks.web.LoadMember$$FastClassByCGLIB$$c7d96f58.invoke(<generated>)
| at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
| at
org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:89)
| at
org.jboss.seam.intercept.ClientSideInterceptor$1.proceed(ClientSideInterceptor.java:69)
| at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:55)
| at
org.jboss.seam.interceptors.RemoveInterceptor.removeIfNecessary(RemoveInterceptor.java:39)
| at sun.reflect.GeneratedMethodAccessor120.invoke(Unknown Source)
| at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at org.jboss.seam.util.Reflections.invoke(Reflections.java:35)
| at
org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:337)
| at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
| at
org.jboss.seam.interceptors.ExceptionInterceptor.handleExceptions(ExceptionInterceptor.java:28)
| at sun.reflect.GeneratedMethodAccessor111.invoke(Unknown Source)
| at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at org.jboss.seam.util.Reflections.invoke(Reflections.java:35)
| at
org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:337)
| at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
| at
org.jboss.seam.intercept.RootInterceptor.createSeamInvocationContext(RootInterceptor.java:287)
| at
org.jboss.seam.intercept.RootInterceptor.invokeInContexts(RootInterceptor.java:257)
| at
org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:203)
| at
org.jboss.seam.intercept.ClientSideInterceptor.interceptInvocation(ClientSideInterceptor.java:78)
| at
org.jboss.seam.intercept.ClientSideInterceptor.intercept(ClientSideInterceptor.java:47)
| at
org.jboss.seam.intercept.Proxy$$EnhancerByCGLIB$$25a2329a.destroy(<generated>)
| 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.jboss.seam.util.Reflections.invoke(Reflections.java:35)
| at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:203)
| at org.jboss.seam.Component.callComponentMethod(Component.java:1742)
| at org.jboss.seam.Component.callDestroyMethod(Component.java:1698)
| at org.jboss.seam.contexts.Contexts.destroy(Contexts.java:371)
| at org.jboss.seam.contexts.Lifecycle.endSession(Lifecycle.java:222)
| at
org.jboss.seam.servlet.SeamListener.sessionDestroyed(SeamListener.java:89)
| at
org.apache.catalina.session.StandardSession.expire(StandardSession.java:687)
| at
org.apache.catalina.session.StandardSession.isValid(StandardSession.java:579)
| at
org.apache.catalina.session.ManagerBase.processExpires(ManagerBase.java:678)
| at
org.apache.catalina.session.ManagerBase.backgroundProcess(ManagerBase.java:663)
| at
org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1284)
| at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1569)
| at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1578)
| at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1578)
| at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1558)
| at java.lang.Thread.run(Thread.java:595)
| Caused by: java.lang.NullPointerException
| at
org.jboss.seam.util.Parameters.convertMultiValueRequestParameter(Parameters.java:97)
| at org.jboss.seam.Component.injectParameters(Component.java:1125)
| at org.jboss.seam.Component.inject(Component.java:1088)
| at
org.jboss.seam.interceptors.BijectionInterceptor.bijectTargetComponent(BijectionInterceptor.java:48)
| at sun.reflect.GeneratedMethodAccessor115.invoke(Unknown Source)
| at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at org.jboss.seam.util.Reflections.invoke(Reflections.java:35)
| at
org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:337)
| at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
| at
org.jboss.seam.interceptors.ManagedEntityIdentityInterceptor.aroundInvoke(ManagedEntityIdentityInterceptor.java:157)
| at sun.reflect.GeneratedMethodAccessor152.invoke(Unknown Source)
| at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at org.jboss.seam.util.Reflections.invoke(Reflections.java:35)
| at
org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:337)
| at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
| at
org.jboss.seam.interceptors.OutcomeInterceptor.interceptOutcome(OutcomeInterceptor.java:45)
| at sun.reflect.GeneratedMethodAccessor114.invoke(Unknown Source)
| at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at org.jboss.seam.util.Reflections.invoke(Reflections.java:35)
| at
org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:337)
| at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
| at
org.jboss.seam.interceptors.ConversationInterceptor.endOrBeginLongRunningConversation(ConversationInterceptor.java:55)
| at sun.reflect.GeneratedMethodAccessor113.invoke(Unknown Source)
| at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at org.jboss.seam.util.Reflections.invoke(Reflections.java:35)
| at
org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:337)
| at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
| at
org.jboss.seam.interceptors.BusinessProcessInterceptor.manageBusinessProcessContext(BusinessProcessInterceptor.java:50)
| at sun.reflect.GeneratedMethodAccessor112.invoke(Unknown Source)
| at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at org.jboss.seam.util.Reflections.invoke(Reflections.java:35)
| at
org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:337)
| at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
| at
org.jboss.seam.interceptors.ConversationalInterceptor.checkConversationForConversationalBean(ConversationalInterceptor.java:82)
| at sun.reflect.GeneratedMethodAccessor447.invoke(Unknown Source)
| at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at org.jboss.seam.util.Reflections.invoke(Reflections.java:35)
| at
org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:337)
| at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
| at
org.jboss.seam.intercept.RootInterceptor.createSeamInvocationContext(RootInterceptor.java:287)
| at
org.jboss.seam.intercept.RootInterceptor.invokeInContexts(RootInterceptor.java:257)
| at
org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:203)
| at
org.jboss.seam.intercept.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:97)
| at sun.reflect.GeneratedMethodAccessor119.invoke(Unknown Source)
| at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at
org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:118)
| at
org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at
org.jboss.ejb3.entity.ExtendedPersistenceContextPropagationInterceptor.invoke(ExtendedPersistenceContextPropagationInterceptor.java:57)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at
org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at
org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
| ... 63 more
|
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