Still having problem with my first EJB3

[Mamadou Touré]

I'm still confused with how to interact with the JNDI, here is my simple code to display hello, so could someone tell me what's wrong ?

1 - error message tha I got
Exception in thread "main" javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:645)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288)
at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:325)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at sourceClient.HelloClient.main(HelloClient.java:21)

2 - My EJB class and interface:

   package sourceBean;

import javax.ejb.Stateless;

/**
 *
 * @author mtoure
 */
@Stateless
public class HelloSessionBean implements HelloSessionLocal {

    public void sayHello() {
        System.out.println("Hi this is my first EJB");
    }
    
    // Add business logic below. (Right-click in editor and choose
    // "Insert Code > Add Business Method" or "Web Service > Add Operation")
 
}
 

 /*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package sourceBean;

import javax.ejb.Local;

/**
 *
 * @author mtoure
 */
@Local
public interface HelloSessionLocal {

    void sayHello();
    
}
   

3 - My EJB client

  /*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package sourceClient;

import javax.naming.InitialContext;
import javax.naming.NamingException;
import sourceBean.HelloSessionBean;

/**
 *
 * @author mtoure
 */
public class HelloClient
{
    public static void main(String [] args) throws NamingException
    {
       InitialContext ic = new  InitialContext();
      HelloSessionBean hsb =  (HelloSessionBean) ic.lookup("java:comp/env/ejb/HelloSessionBean");
      hsb.sayHello();
    }

}
  

[Marco Ehrentreich]

Hi,

from a quick look your examples looks alright!

The problem is the JNDI lookup. You have to know the right lookup name and you most probably have to specify some system parameters which tell the client for example on which IP address and port it may connect to a JNDI provider.

Both of these things may depend on the application server (at least with EJB 3.0) you're using! So perhaps you can tell us which server it is or you can search yourself on the internet which are the correct settings for your server!

Marco

[Mamadou Touré]

Thanks,

I'm using Glassfish server

Do I have to setup something on the server ?

[Marco Ehrentreich]

Hi,

from the header of your code fragments I guess you used NetBeans to create the project. Perhaps it's the easiest way to understand the problem by having a look at this tutorial. In particular the section "Creating a Java Stand-Alone Client" will be helpful as it describes how to setup the JNDI parameters with a "jndi.properties" file on the classpath ;-)

Additionally it could be useful for debugging to show what's in the JNDI lookup of Glassfish as described here.

Marco

[Sai Surya]

Hi Marco,

Perhaps you can try using name attribute for your @Stateless annotation and use that name in the JNDI look up. It worked for me in Glashfish app. server.