Unable to deploy simple MDB

[fmarchioni]

Dear all,
I'm trying to deploy a simple MDB on JBoss 4.2.0 GA. However once I package the mdb in a jar file and deploy it I get this error:

14:44:33,828 WARN [ServiceController] Problem creating service jboss.j2ee:service=EJB3,module=DummyMDBean.jar
java.lang.ClassNotFoundException: No ClassLoaders found for: com.sample.DummyMDBean
 at org.jboss.mx.loading.LoadMgr3.beginLoadTask(LoadMgr3.java:212)
 at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:514)
 at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:408)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
 at org.jboss.ejb3.Ejb3AnnotationHandler.populateBaseInfo(Ejb3AnnotationHandler.java:293)
 at org.jboss.ejb3.Ejb3AnnotationHandler.getContainers(Ejb3AnnotationHandler.java:138)
 at org.jboss.ejb3.Ejb3Deployment.deployElement(Ejb3Deployment.java:468)
 at org.jboss.ejb3.Ejb3Deployment.deployElement(Ejb3Deployment.java:424)
 at org.jboss.ejb3.Ejb3Deployment.deployUrl(Ejb3Deployment.java:405)
 at org.jboss.ejb3.Ejb3Deployment.deploy(Ejb3Deployment.java:366)
 at org.jboss.ejb3.Ejb3Deployment.create(Ejb3Deployment.java:321)
 at org.jboss.ejb3.Ejb3Module.createService(Ejb3Module.java:77)
 at org.jboss.system.ServiceMBeanSupport.jbossInternalCreate(ServiceMBeanSupport.java:260)
 at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:243)
 at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
 at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceControl
ler.java:978)
 at $Proxy0.create(Unknown Source)

This is the source code:

package com.sample;

import javax.ejb.ActivationConfigProperty;
import javax.ejb.MessageDriven;
import javax.jms.Message;
import javax.jms.MessageListener;

 @MessageDriven(
 name="MessageMDBSample",
 activationConfig = {
 @ActivationConfigProperty(
 propertyName = "destinationType",
 propertyValue = "javax.jms.Queue"),
 @ActivationConfigProperty(propertyName = "destination",
 propertyValue = "testQueue"),
 @ActivationConfigProperty(
 propertyName = "acknowledgeMode",
 propertyValue = "Auto-acknowledge")})

 public class DummyMDBean implements MessageListener {

 public void onMessage(Message message) {

 System.out.println("Message received "+message.toString());

 }



 }

The queue was deployed separately under the "deploy" directory

<server>
 <mbean code="org.jboss.mq.server.jmx.Queue"
 name="jboss.mq.destination:service=Queue,name=testQueue">
 <depends optional-attribute-name="DestinationManager">jboss.mq:service=DestinationManager</depends>
 </mbean>
</server>

Any help ?
thanks a lot
frank

[jaikiran]

Are you deploying this as a jar? If yes, then post the output of:

jar -tf myapp.jar

where myapp.jar is the name of your jar file.

[francis17101970]

check that your class is inside the folder com.sample.
A common mistake is packing your class with Winzip forgetting to include the folders (=package).

[fmarchioni]

yes, what a fool ! I have packaged the .jar file without the folders.
Sorry, the "No ClassLoaders found" message took me on the wrong way, I thought it was a problem with the MDB 3.0

Thanks for your help!