java.lang.ClassNotFoundException --- from createMBean

[thethirdeye]

Hi,

I am trying to create a Mock mbean using the following statment

mbs.createMBean(MOCK_MSG_CLASS_NAME, testMsg);

where MOCK_MSG_CLASS_NAME --- "com.pack.mockMsg"
and testMsg = Object Name


I have imported the package com.pack.mockMsg. I recieve the following exception when I exucute the testCase through Eclipse ..

Caused by: java.lang.ClassNotFoundException: com.pack.mockMsg
 at org.jboss.mx.loading.UnifiedLoaderRepository3.loadClass(UnifiedLoaderRepository3.java:593)
 at org.jboss.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:1192)

Any help is greatly appriciated !

Regards,
RM

[thethirdeye]

A bit more information :

the MBeanServer (mbs) used is a remote mbean server obtained through the RMIAdaptor

mbs = (MBeanServerConnection) ctx.lookup("jmx/invoker/RMIAdaptor");

This is the full stack trace generated

javax.management.ReflectionException: Class not found: com.pack.mockMsg
 at org.jboss.mx.server.MBeanServerImpl.handleInstantiateExceptions(MBeanServerImpl.java:1243)
 at org.jboss.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:1222)
 at org.jboss.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:233)
 at org.jboss.mx.server.MBeanServerImpl.createMBean(MBeanServerImpl.java:279)
 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.jmx.connector.invoker.InvokerAdaptorService.invoke(InvokerAdaptorService.java:251)
 at sun.reflect.GeneratedMethodAccessor81.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:141)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
 at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:118)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:74)
 at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:127)
 at org.jboss.jmx.connector.invoker.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:87)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:74)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:245)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
 at org.jboss.invocation.jrmp.server.JRMPProxyFactory.invoke(JRMPProxyFactory.java:164)
 at sun.reflect.GeneratedMethodAccessor80.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:141)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:245)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
 at org.jboss.invocation.jrmp.server.JRMPInvoker$MBeanServerAction.invoke(JRMPInvoker.java:805)
 at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:406)
 at sun.reflect.GeneratedMethodAccessor79.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:294)
 at sun.rmi.transport.Transport$1.run(Transport.java:153)
 at java.security.AccessController.doPrivileged(Native Method)
 at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
 at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
 at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
 at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.ClassNotFoundException: com.pack.mockMsg
 at org.jboss.mx.loading.UnifiedLoaderRepository3.loadClass(UnifiedLoaderRepository3.java:593)
 at org.jboss.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:1192)
 ... 40 more

[jaikiran]

javax.management.ReflectionException: Class not found: com.pack.mockMsg

Where have you placed the jar containing this

com.pack.mockMsg

class in jboss. How is it packaged?

[thethirdeye]

Its an ear package placed in the deploy directory $JBOSS_HOME/server/default/deploy .

Do you reckon the problem is associated with the class not being in the LoaderRepository?

Caused by: java.lang.ClassNotFoundException: com.pack.mockMsg
 at org.jboss.mx.loading.UnifiedLoaderRepository3.loadClass(UnifiedLoaderRepository3.java:593)
 at org.jboss.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:1192)

Do I have to do anything else to prompt JBoss to load the class in the LoaderRepository or is placing the ear file in the deploy directory enough signal for JBoss to load the class in the repository?

[jaikiran]

As per the javadoc of createMBean:
http://java.sun.com/j2ee/1.4/docs/api/javax/management/MBeanServerConnection.html#createMBean(java.lang.String,%20javax.management.ObjectName)

The MBean server will use its Default Loader Repository to load the class of the MBean

And the Default Loader Repository description is provided at:

http://java.sun.com/j2ee/1.4/docs/api/javax/management/loading/ClassLoaderRepository.html

Going by these docs, i think that the jar containing your MBean classes will have to be placed in the %JBOSS_HOME%/server/default/lib directory. Try it out and let us know if you have any issues.

[thethirdeye]

Thanks matey !! The solution did work .