ClassCastException after lookup

[candychow]

Hello all,

I am getting start to EJB 3.0 with a HelloWorld, but I got the following exception:
java.lang.ClassCastException: org.jnp.interfaces.NamingContext

I am using NetBeans 5.5 Preview, JBoss 4.0.4.CR2 with EJB3.

Here is my HelloWorldBean:

package hi;

import javax.ejb.Stateless;

@Stateless(name="HelloWorld")
public class HelloWorldBean implements HelloWorldRemote {
 public String sayHi (){
 return "Hello world!";
 }
}

Here is my HelloWorldRemote:

package hi;

import javax.ejb.Remote;

@Remote
public interface HelloWorldRemote {
 public String sayHi ();
}

And then I get the Remote by this:

Properties props = new Properties();
props.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
props.setProperty("java.naming.provider.url", new String("jnp://localhost:1099"));
props.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces");
InitialContext context = new InitialContext(props);
hello = (HelloWorldRemote) context.lookup("HelloWorld");

I got the exception when i cast the object to HelloWorldRemote after lookup.

What is the problem with my code? How should I get the Remote correctly?

Please help. Thanks!!

Regards,
Candy

[echon]

I would say one problem is the JNDI-Binding you do not specify.

By standard the JNDI-Binding names are
EAR-FILE-BASE-NAME/EJB-CLASS-NAME/local,
EAR-FILE-BASE-NAME/EJB-CLASS-NAME/remote,
EJB-CLASS-NAME/local, EJB-CLASS-NAME/remote

or you specify them

@Remote( { HelloWorldServiceRemote.class })
@RemoteBinding(jndiBinding = HelloWorldServiceRemote.JNDI)

and in the interface

public interface HelloWorldServiceRemote {

 public final static String JNDI = "de.tum.sebis.dbis.service.HelloWorldServiceRemote";

 public String getHelloWorld();

}

The other problem are missing jars in your classpath for your client.


Regards

Peter