Question

I’m trying to play around with EJB remote call but I’m getting an error. I have a web app called CallerApp that calls a method in another web app called RecieverApp.

In the CallerApp I have a remote interface:

@Remote
public interface ControllerRemote {
    public int perform(int i);
}

and the call is performed in this class:

public class Talker {

   @EJB private ControllerRemote remote;

   //constructor and invoke setRemote() method to set remote

   private void setRemote() throws Exception{
        Properties p = new Properties();
        Context jndiContext = new InitialContext(p);
        Object ref = jndiContext.lookup("java:global/RecieverApp/Controller!bean.ControllerRemote");
        remote = (ControllerRemote) PortableRemoteObject.narrow(ref, ControllerRemote.class);
   }

 public void action(){
      remote.perform(5);
 }

}

RecieverApp is depoloyed on the same Glassfish server:

@Stateless
public class Controller implements Serializable, ControllerRemote{


   @Override
   public int perform(int i){
      //return something
   }
}

The interface in RecieverApp is exactly as the one in CallerApp:

@Remote
public interface CallerRemote{

   public int perform(int i);

}

I’m getting the following exception:

SEVERE: javax.naming.NamingException: Lookup failed for 'java:global/RecieverApp/Controller!bean.ControllerRemote'
   in SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory,
java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl,
java.naming.factory.url.pkgs=com.sun.enterprise.naming}
[Root exception is javax.naming.NamingException: ejb ref resolution error for remote business interfacebean.ControllerRemote
[Root exception is java.lang.ClassNotFoundException: bean.ControllerRemote]]

What I’m doing wrong here?

PS: I’m using Glassfish 3.1 and both applications are deployed on the same server.

Answer 1

There are few things to consider:

• check whether JNDI name java:global/RecieverApp/Controller!bean.ControllerRemote exists, there was nice JNDI browser in Glassfish 2.x, but they didn’t put it in GF 3 (it should be in GF 4), but you still have good old command line: asadmin list-jndi-entries
• check whether your CallerRemote interfaces are in same packages in both applications
• there is no need to perform both injection (@EJB) and JNDI lookup, if your class Talker is container-managed (i.e. bean, servlet, etc.) then @EJB annotation will suffice, otherwise use only lookup