New to EJB

[Ankit Mishra]

Hi,

I have just started working with EJB 2.1 but unable to run even a single example.

I am using weblogic server 9.2.

I have created a session bean and configured these deployment descriptors in META-INF directory
weblogic-ejb-jar.xml
ejb-jar.xml
application.xml
packaged above in a jar file and deployed on server.

But, I don't know about JNDI lookup. I have made a client which is setting up the context but I cannot view JNDI tree in my weblogic server.

Any help will be highly appreciated


Below is the client code:

 package client;

import java.rmi.RemoteException;

import javax.ejb.CreateException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import ejb.examples.AdviceHome;
import ejb.examples.AdviceRemote;

import java.util.Hashtable;
import java.util.Properties;
import weblogic.rmi.extensions.PortableRemoteObject;

public class EJBClient {

	public static void main(String argsp[]){
		EJBClient adviceClient = new EJBClient();
		adviceClient.go();
	}

	public void go(){
		Context ctx;
		try {
			Hashtable<String, String> env = new Hashtable<String, String>();
			env.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");
			env.put(Context.SECURITY_PRINCIPAL, "ankit");
			env.put(Context.SECURITY_CREDENTIALS, "omsai123");
			env.put(Context.PROVIDER_URL,"t3://localhost:7001");
			ctx = new InitialContext(env);
			ctx = (Context)new InitialContext();
			Object obj = ctx.lookup("Advisor");
			//AdviceHome home = (AdviceHome) ctx.lookup("Advisor");
			//AdviceHome home = (AdviceHome)PortableRemoteObject.narrow(obj, AdviceHome.class);
			AdviceRemote advisor = (AdviceRemote)PortableRemoteObject.narrow(obj, AdviceHome.class);
			System.out.println(advisor.getAdvice());
		} catch (NamingException e) {
			e.printStackTrace();
		} catch (RemoteException e) {
			e.printStackTrace();
		}

	}
}

weblogic-ejb-jar.xml

   

<?xml version="1.0"?>
<wls:weblogic-ejb-jar xmlns:wls="http://www.bea.com/ns/weblogic/90" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.bea.com/ns/weblogic/90 http://www.bea.com/ns/weblogic/920/weblogic-ejb-jar.xsd 
http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/ejb-jar_2_1.xsd">
	<wls:weblogic-enterprise-bean>
		<wls:ejb-name>AdviceBean</wls:ejb-name>
		<wls:jndi-name>Advisor</wls:jndi-name>
	</wls:weblogic-enterprise-bean>


</wls:weblogic-ejb-jar>    

[Jeanne Boyarsky]

Ankit,

 Object obj = ctx.lookup("Advisor");  

This looks suspicious. Usually from java we have "java:comp/env/myJndiName".

Also, does WebLogic have an admin console that you can use to browse the JNDI? This will tell you if your EJB got deployed properly and is sitting in the JNDI where you think it is.

[Ankit Mishra]

Hi Jeanne ,

Thanks for you reply.

I have done that also what you suggested but in vain.

My ejb.jar is getting deployed as a library in weblogic server.

In JNDI tree i could just view the domain server I created and some other things but not the EJB i have deployed.

It will be great if you could help me in this regard.

If required will share other files as well

[Jeanne Boyarsky]

It sounds like the EJB might not have gotten deployed. I'm moving this thread to our WebLogic forum where people more familiar with WebLogic hang out.