Cannot connect a Java GUI client to an EJB

Question

I am having problems trying to make a Java GUI client connect to an EJB. I am using JRun4.
At first, I tried making the Java GUI client a part of the enterprise application that I am building (of which the EJB is a part of). I included the client as a Java module in the application.xml of the enterprise application.
However, when I try to start the server, containing this application, I get an error saying:
Application authentication required. Incorrect method call.
Now when I try to execute the application from the console, it works fine except when it comes to the part when it has to connect to the EJB. At this point I get an java.lang.reflect.UndeclaredThrowableException. Here's the stack trace:
java.lang.reflect.UndeclaredThrowableException
at $Proxy1.create(Unknown Source)
at mds.Caller.actionPerformed(Caller.java:135)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: jrun.ejb.invocation.ContainerNotFoundException: The EJB container for boss-ejb#Boss could not be found.
at jrun.ejb.invocation.AbstractInvocationProxy.findContainer(AbstractInvocationProxy.java:58)
at jrun.ejb.invocation.LocalInvocationProxyImpl.invoke(LocalInvocationProxyImpl.java:53)
at jrun.ejb.invocation.ClientInvocationHandlerImpl.invoke(ClientInvocationHandlerImpl.java:198)
... 25 more
Since the bean is local, I am using a local reference to the bean in the lookup in the code of the client:
Object o = context.lookup("local/BeanTest")
I tried to use:
Object o = context.lookup("java:comp/env/ejb/BeanTest")
and added an ejb-local-ref in the application-client.xml file of the client. But when I try executing the client in this case, I get an error saying:
No such binding: ejb
I wish someone can help me out with this. My main aim is to get the app client talk to the EJB. Thanks a lot in advance.
Soham

Answer 1

I am not sure of a tool to view the JNDI tree. I have one in Weblogic console. But you can check the JNDI names with a small sample code.
import java.util.*;
import javax.naming.*;
import javax.rmi.PortableRemoteObject;
public class TestEnvironment {
    public static void main(String[] args) {
        Context context   = null;
        Object object     = null;
        // Hashtable for environment properties.
        Hashtable env = new Hashtable();
        env.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
        env.put(Context.PROVIDER_URL, "t3://localhost:7001");
        try {
            context   = new InitialContext(env);
            NamingEnumeration enum = context.listBindings("");
            while (enum.hasMore()) {
                Binding binding = (Binding) enum.next();
                System.out.println("Name: " + binding.getName());
                System.out.println("Type: " + binding.getClassName());
                System.out.println("Value: " + binding.getObject());
        } catch (Exception exception) {
            exception.printStackTrace();
}Hope this helps.