Help with weird ClassLoader error
I am trying to send emails using JMS. I have the following setup
EAR
|--MyHelperBeans.ejb
| |--MyEmailObj
|
|--MyEJB3.ejb3
| |--MyEmailService
| |--MyEJB3Class
The code for my Email Service using JMS is shown below. You can see that the email service is receiving a custom serializable object (a.k.a. MyEmailObj)
package ejb3.MyEmailService;
import ejb.MyEmailObj;
import javax.ejb.ActivationConfigProperty;
import javax.ejb.MessageDriven;
import javax.jms.ObjectMessage;
@MessageDriven(activateConfig =
{
@ActivationConfigProperty(propertyName = "destinationType",
propertyValue = "javax.jms.Queue"),
@ActivationConfigProperty(propertyName = "destination",
propertyValue = "queue/myEmailQueue")
})
public class EmailService {
public void onMessage(javax.jms.Message msg) {
try {
System.out.println("I am in onMessage()");
final ObjectMessage objMessage = (ObjectMessage) msg;
final MyEmailObj email = (MyEmailObj) objMessage.getObject();
System.out.println("I should get here");
}
catch (Exception e) {
System.out.println("Error in onMessage().");
System.out.println(e.toString());
e.printStackTrace();
}
}
}
However, it seems that it cannot find ejb3 classes referenced from within MyEmailObj. Below is the code for MyEmailObj.
public class MyEmailObj implements Serializable {
private boolean myBoolean;
MyEJB3Class myEJB3Class;
public EmailObj() {
try{
System.out.println("MyEmailObj Constructor");
InitialContext ctx = new InitialContext();
myEJB3Class = (MyEJB3Class)ctx.lookup(MyEJB3Class.class.getName());
}
catch(Exception e){
System.out.println("Could not get MyEJB3Class.");
e.printStackTrace();
}
}
public void setMyBoolean(final boolean b) {
myBoolean = myEJB3Class.doSomething(b);
}
}
When I execute the program I get the following:
[STDOUT] MyEmailObj Constructor [STDOUT] I am in onMessage() [STDOUT] Error in onMessage(). [STDOUT]javax.jms.MessageFormatException: ClassNotFoundException: No ClassLoaders found for: ejb3.MyEJB3Class [STDOUT] javax.jms.MessageFormatException: ClassNotFoundException: No ClassLoaders found for: ejb3.MyEJB3Class [STDOUT] at org.jboss.mq.SpyObjectMessage.getObject(SpyObjectMessage.java:136) [STDOUT] at ejb3.services.email.EmailService.onMessage(EmailService.java:26) [STDOUT] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [STDOUT] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [STDOUT] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [STDOUT] at java.lang.reflect.Method.invoke(Method.java:585) [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:109) [STDOUT] at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:32) [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) [STDOUT] at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:113) [STDOUT] at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:138) [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) [STDOUT] at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:39) [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) [STDOUT] at org.jboss.ejb3.mdb.MDB.localInvoke(MDB.java:716) [STDOUT] at org.jboss.ejb3.mdb.MDB$MessageListenerImpl.onMessage(MDB.java:912) [STDOUT] at org.jboss.jms.asf.StdServerSession.onMessage(StdServerSession.java:256) [STDOUT] at org.jboss.mq.SpyMessageConsumer.sessionConsumerProcessMessage(SpyMessageConsumer.java:904) [STDOUT] at org.jboss.mq.SpyMessageConsumer.addMessage(SpyMessageConsumer.java:160) [STDOUT] at org.jboss.mq.SpySession.run(SpySession.java:333) [STDOUT] at org.jboss.jms.asf.StdServerSession.run(StdServerSession.java:180) [STDOUT] at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743) [STDOUT] at java.lang.Thread.run(Thread.java:595)