[jboss-user] [Messaging, JMS & JBossMQ] - EJB3 MDB error when reading a message in JBossMQ

[sonicfab]

Hi. I'm using JBoss 4.2.2.GA with EJB3 MDBs and Spring to inject the MDB's business logic. I'm getting an error related to the MDB's lifecyle.
Here's my MDB code :
package com.acme.impl;
  | 
  | 
  | import javax.annotation.Resource;
  | import javax.ejb.ActivationConfigProperty;
  | import javax.ejb.MessageDriven;
  | import javax.ejb.MessageDrivenContext;
  | import javax.interceptor.Interceptors;
  | import javax.jms.Message;
  | import javax.jms.MessageListener;
  | 
  | import org.springframework.beans.factory.annotation.Autowired;
  | import org.springframework.ejb.interceptor.SpringBeanAutowiringInterceptor;
  | 
  | import com.acme.api.MDBDelegate;
  | 
  | /**
  |  * @author fcoppens
  |  */
  | 
  | @MessageDriven(name="QueueListenerMDB", activationConfig = {
  |     @ActivationConfigProperty(propertyName="destinationType", propertyValue="javax.jms.Queue"),
  |     @ActivationConfigProperty(propertyName="destination", propertyValue="queue/testQueue")
  | 
  | })
  | @Interceptors(SpringBeanAutowiringInterceptor.class)
  | public class QueueListenerMDB implements MessageListener {
  | 
  |     @Resource
  |     private MessageDrivenContext context;
  |     
  |     @Autowired
  |     private MDBDelegate delegate;
  |     
  |     public void onMessage(Message message) {
  |     	delegate.onMessage(message);
  |     }
  | }

The MDB is deployed correctly on JBoss without any errors.
When I post a message on the queue, here's the error stack I get :
2008-06-15 17:47:06,843 ERROR [org.jboss.resource.adapter.jms.inflow.JmsServerSes sion] Unexpected error delivering message org.jboss.mq.SpyObjectMessage {
Header {
jmsDestination : QUEUE.testQueue
jmsDeliveryMode : 2
jmsExpiration : 0
jmsPriority : 4
jmsMessageID : ID:11-12135448268281
jmsTimeStamp : 1213544826828
jmsCorrelationID: null
jmsReplyTo : null
jmsType : null
jmsRedelivered : false
jmsProperties : {}
jmsPropReadWrite: false
msgReadOnly : true
producerClientId: ID:11
}
}
java.lang.RuntimeException: java.lang.NullPointerException
at org.jboss.ejb3.interceptor.LifecycleInterceptorHan dler.postConstruct(LifecycleInterceptorHandler.jav a:113)
at org.jboss.ejb3.EJBContainer.invokePostConstruct(EJ BContainer.java:619)
at org.jboss.ejb3.AbstractPool.create(AbstractPool.ja va:131)
at org.jboss.ejb3.StrictMaxPool.get(StrictMaxPool.jav a:141)
at org.jboss.ejb3.stateless.StatelessInstanceIntercep tor.invoke(StatelessInstanceInterceptor.java:54)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNex t(MethodInvocation.java:101)
at org.jboss.ejb3.mdb.MessagingContainer.localInvoke( MessagingContainer.java:249)
at org.jboss.ejb3.mdb.inflow.MessageInflowLocalProxy. delivery(MessageInflowLocalProxy.java:268)
at org.jboss.ejb3.mdb.inflow.MessageInflowLocalProxy. invoke(MessageInflowLocalProxy.java:138)
at $Proxy197.onMessage(Unknown Source)
at org.jboss.resource.adapter.jms.inflow.JmsServerSes sion.onMessage(JmsServerSession.java:178)
at org.jboss.mq.SpyMessageConsumer.sessionConsumerPro cessMessage(SpyMessageConsumer.java:891)
at org.jboss.mq.SpyMessageConsumer.addMessage(SpyMess ageConsumer.java:170)
at org.jboss.mq.SpySession.run(SpySession.java:323)
at org.jboss.resource.adapter.jms.inflow.JmsServerSes sion.run(JmsServerSession.java:237)
at org.jboss.resource.work.WorkWrapper.execute(WorkWr apper.java:204)
at org.jboss.util.threadpool.BasicTaskWrapper.run(Bas icTaskWrapper.java:275)
at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Wo rker.run(PooledExecutor.java:756)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.NullPointerException
at org.jboss.mx.loading.RepositoryClassLoader.findCla ss(RepositoryClassLoader.java:630)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 06)
at org.jboss.mx.loading.RepositoryClassLoader.loadCla ssImpl(RepositoryClassLoader.java:474)
at org.jboss.mx.loading.RepositoryClassLoader.loadCla ss(RepositoryClassLoader.java:415)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 99)
at java.net.FactoryURLClassLoader.loadClass(URLClassL oader.java:579)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 99)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 51)
at org.springframework.util.ClassUtils.forName(ClassU tils.java:249)
at org.springframework.beans.factory.support.Abstract BeanDefinition.resolveBeanClass(AbstractBeanDefini tion.java:381)
at org.springframework.beans.factory.support.Abstract BeanFactory.resolveBeanClass(AbstractBeanFactory.j ava:1135)
at org.springframework.beans.factory.support.Abstract BeanFactory.resolveBeanClass(AbstractBeanFactory.j ava:1102)
at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory$1.run(AbstractAutowireC apableBeanFactory.java:386)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.createBean(AbstractAuto wireCapableBeanFactory.java:380)
at org.springframework.beans.factory.support.Abstract BeanFactory$1.getObject(AbstractBeanFactory.java:2 64)
at org.springframework.beans.factory.support.DefaultS ingletonBeanRegistry.getSingleton(DefaultSingleton BeanRegistry.java:217)
at org.springframework.beans.factory.support.Abstract BeanFactory.doGetBean(AbstractBeanFactory.java:261 )
at org.springframework.beans.factory.support.Abstract BeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.Abstract BeanFactory.getBean(AbstractBeanFactory.java:168)
at org.springframework.context.support.AbstractApplic ationContext.getBean(AbstractApplicationContext.ja va:885)
at org.springframework.beans.factory.access.Singleton BeanFactoryLocator.useBeanFactory(SingletonBeanFac toryLocator.java:397)
at org.springframework.ejb.interceptor.SpringBeanAuto wiringInterceptor.getBeanFactoryReference(SpringBe anAutowiringInterceptor.java:139)
at org.springframework.ejb.interceptor.SpringBeanAuto wiringInterceptor.getBeanFactory(SpringBeanAutowir ingInterceptor.java:120)
at org.springframework.ejb.interceptor.SpringBeanAuto wiringInterceptor.autowireBean(SpringBeanAutowirin gInterceptor.java:100)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.ejb3.interceptor.LifecycleInvocationCont extImpl.proceed(LifecycleInvocationContextImpl.jav a:131)
at org.jboss.ejb3.interceptor.LifecycleInterceptorHan dler.postConstruct(LifecycleInterceptorHandler.jav a:109)
... 18 more

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