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[JBoss-user] [Messaging, JMS & JBossMQ] - NPE (In JMSCI message listener) on calling SSB method from M
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From: kannan <do-...@jb...> - 2005-12-27 20:45:17
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Hello: I am getting the following stack trace of NPE when I call a stateless session bean method from the onMessage() of my MDB. Both MDB and SSB use CMT and MDB is configured to listen on a remote mq provider. When i remove the SSB method call from the onMessage(), the problem vanishes. I am using JBoss-3.2.7. Can anyone help me in finding a solution for this ? thanks and regards, -- Kannan. 02:00:10,484 ERROR [LogInterceptor] RuntimeException in method: public abstract void javax.jms.MessageListener.onMessage(javax.jms.Message) java.lang.NullPointerException at $Proxy176.createMaster(Unknown Source) at org.foo..masters.MastersSubscriberMDB.onMessage(MastersSubscriberMDB.java:76) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.jboss.ejb.MessageDrivenContainer$ContainerInterceptor.invoke(MessageDrivenContainer.java:458) at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:186) at org.jboss.ejb.plugins.MessageDrivenInstanceInterceptor.invoke(MessageDrivenInstanceInterceptor.java:62) at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:84) at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:284) at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:150) at org.jboss.ejb.plugins.RunAsSecurityInterceptor.invoke(RunAsSecurityInterceptor.java:90) at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:192) at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122) at org.jboss.ejb.MessageDrivenContainer.internalInvoke(MessageDrivenContainer.java:372) at org.jboss.ejb.Container.invoke(Container.java:709) at org.jboss.ejb.plugins.jms.JMSContainerInvoker.invoke(JMSContainerInvoker.java:928) at org.jboss.ejb.plugins.jms.JMSContainerInvoker$MessageListenerImpl.onMessage(JMSContainerInvoker.java:1205) at org.jboss.jms.asf.StdServerSession.onMessage(StdServerSession.java:276) at org.jboss.mq.SpyMessageConsumer.sessionConsumerProcessMessage(SpyMessageConsumer.java:904) at org.jboss.mq.SpyMessageConsumer.addMessage(SpyMessageConsumer.java:159) at org.jboss.mq.SpySession.run(SpySession.java:351) at org.jboss.jms.asf.StdServerSession.run0(StdServerSession.java:200) at org.jboss.jms.asf.StdServerSession.run(StdServerSession.java:180) at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743) at java.lang.Thread.run(Thread.java:534) 02:00:10,515 ERROR [JMSContainerInvoker] Exception in JMSCI message listener javax.ejb.EJBException: RuntimeException; CausedByException is: null at org.jboss.ejb.plugins.LogInterceptor.handleException(LogInterceptor.java:382) at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:196) at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122) at org.jboss.ejb.MessageDrivenContainer.internalInvoke(MessageDrivenContainer.java:372) at org.jboss.ejb.Container.invoke(Container.java:709) at org.jboss.ejb.plugins.jms.JMSContainerInvoker.invoke(JMSContainerInvoker.java:928) at org.jboss.ejb.plugins.jms.JMSContainerInvoker$MessageListenerImpl.onMessage(JMSContainerInvoker.java:1205) at org.jboss.jms.asf.StdServerSession.onMessage(StdServerSession.java:276) at org.jboss.mq.SpyMessageConsumer.sessionConsumerProcessMessage(SpyMessageConsumer.java:904) at org.jboss.mq.SpyMessageConsumer.addMessage(SpyMessageConsumer.java:159) at org.jboss.mq.SpySession.run(SpySession.java:351) at org.jboss.jms.asf.StdServerSession.run0(StdServerSession.java:200) at org.jboss.jms.asf.StdServerSession.run(StdServerSession.java:180) at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743) at java.lang.Thread.run(Thread.java:534) java.lang.NullPointerException at $Proxy176.createMaster(Unknown Source) at org.foo..masters.MastersSubscriberMDB.onMessage(MastersSubscriberMDB.java:76) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.jboss.ejb.MessageDrivenContainer$ContainerInterceptor.invoke(MessageDrivenContainer.java:458) at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:186) at org.jboss.ejb.plugins.MessageDrivenInstanceInterceptor.invoke(MessageDrivenInstanceInterceptor.java:62) at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:84) at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:284) at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:150) at org.jboss.ejb.plugins.RunAsSecurityInterceptor.invoke(RunAsSecurityInterceptor.java:90) at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:192) at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122) at org.jboss.ejb.MessageDrivenContainer.internalInvoke(MessageDrivenContainer.java:372) at org.jboss.ejb.Container.invoke(Container.java:709) at org.jboss.ejb.plugins.jms.JMSContainerInvoker.invoke(JMSContainerInvoker.java:928) at org.jboss.ejb.plugins.jms.JMSContainerInvoker$MessageListenerImpl.onMessage(JMSContainerInvoker.java:1205) at org.jboss.jms.asf.StdServerSession.onMessage(StdServerSession.java:276) at org.jboss.mq.SpyMessageConsumer.sessionConsumerProcessMessage(SpyMessageConsumer.java:904) at org.jboss.mq.SpyMessageConsumer.addMessage(SpyMessageConsumer.java:159) at org.jboss.mq.SpySession.run(SpySession.java:351) at org.jboss.jms.asf.StdServerSession.run0(StdServerSession.java:200) at org.jboss.jms.asf.StdServerSession.run(StdServerSession.java:180) at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743) at java.lang.Thread.run(Thread.java:534) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3914492#3914492 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3914492 |