javax.naming.NameNotFoundException WildFly上的EJB HelloWorld

Question

I am a beginner in EJB 3.1 and trying to run my first Hello World program and getting the NameNotFoundException.

Exception in thread "main" javax.naming.NameNotFoundException: WFNAM00004: Name "global/HelloWorld/HelloWorldBean!api.HelloWorldRemote" is not found
at org.wildfly.naming.client.util.NamingUtils$1.lookupNative(NamingUtils.java:95)
at org.wildfly.naming.client.AbstractContext.lookup(AbstractContext.java:84)
at org.wildfly.naming.client.WildFlyRootContext.lookup(WildFlyRootContext.java:150)
at javax.naming.InitialContext.lookup(InitialContext.java:417)
at driver.HelloWorld.main(HelloWorld.java:27)

Here are my classes

Local Interface:

@Local
 public interface HelloWorldLocal {
public void getHello();
 }

Remote Interface:

@Remote
public interface HelloWorldRemote extends HelloWorldLocal {

 }

Bean Class:

@Stateless(name="HelloWroldBean")
public class HelloWorldBean implements HelloWorldLocal, HelloWorldRemote{

@Override
public void getHello() {
    System.out.println("Hello Cheppura");
}

  }

Client:

public class HelloWorld {

public static void main(String[] args) throws NamingException {
    final Hashtable<String, String> jndiProperties = new Hashtable<>();
    jndiProperties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
    jndiProperties.put(Context.INITIAL_CONTEXT_FACTORY,         
            "org.wildfly.naming.client.WildFlyInitialContextFactory");
    Context con = new InitialContext(jndiProperties);

    final String appName = "";
    final String moduleName = "HelloWorld";
    final String beanName = HelloWorldBean.class.getSimpleName();
    final String viewClassName = HelloWorldRemote.class.getName();

    Object ob = con.lookup("java:global" + appName + "/" + moduleName  + "/" + beanName + "!" + viewClassName);

    HelloWorldRemote hw = (HelloWorldRemote) PortableRemoteObject.narrow(ob, HelloWorldRemote.class);

    hw.getHello();
}

}

Can anyone please advice on this? Thanks in advance

Answer 1

You've violated the JEE specification, since there is no inheritance in EJB interfaces.

Your Remote interface extends the Local one but such approach goes against the specification. I think such EAR will never deployed correctly, regardless a runtime environment.

If you want to write a less code this way, then create a third interface with the public void getHello(); method and extend it in both Local and Remote interfaces.

public interface Secondary {
    public void getHello();
}

@Remote
public interface HelloWorldRemote extends Secondary {
 }

@Local
 public interface HelloWorldLocal extends Secondary{
 }