2 Replies Latest reply on Dec 18, 2005 8:47 AM by yufeilu

    Problems running a remote client.. EJBMetaDataImpl class not

    adrian_p
    adrian_p Aug 18, 2005 7:47 PM

      Hi,

      I'm trying to test a stateless bean with a remote client.. I've changed java.naming.provider.url=10.0.0.2:1099 in jndi.properties from default value, deployed my test bean to the server (tried it on JBOSS 4.0.2 and also on 4.0.3 RC2). When i try to run the client (on a remote machine) i get:

      javax.naming.CommunicationException [Root exception is java.lang.ClassNotFoundException: org.jboss.proxy.ejb.EJBMetaDataImpl]
 at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:713)
 at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572)
 at javax.naming.InitialContext.lookup(Unknown Source)
 at client.ejbclient.main(ejbclient.java:14)
Caused by: java.lang.ClassNotFoundException: org.jboss.proxy.ejb.EJBMetaDataImpl
 at java.net.URLClassLoader$1.run(Unknown Source)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.net.URLClassLoader.findClass(Unknown Source)
 at java.lang.ClassLoader.loadClass(Unknown Source)
 at java.lang.ClassLoader.loadClass(Unknown Source)
 at java.lang.ClassLoader.loadClassInternal(Unknown Source)
 at java.lang.Class.forName0(Native Method)
 at java.lang.Class.forName(Unknown Source)
 at sun.rmi.server.LoaderHandler.loadClass(Unknown Source)
 at sun.rmi.server.LoaderHandler.loadClass(Unknown Source)
 at java.rmi.server.RMIClassLoader$2.loadClass(Unknown Source)
 at java.rmi.server.RMIClassLoader.loadClass(Unknown Source)
 at sun.rmi.server.MarshalInputStream.resolveClass(Unknown Source)
 at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
 at java.io.ObjectInputStream.readClassDesc(Unknown Source)
 at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
 at java.io.ObjectInputStream.readObject0(Unknown Source)
 at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
 at java.io.ObjectInputStream.readSerialData(Unknown Source)
 at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
 at java.io.ObjectInputStream.readObject0(Unknown Source)
 at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
 at java.io.ObjectInputStream.readSerialData(Unknown Source)
 at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
 at java.io.ObjectInputStream.readObject0(Unknown Source)
 at java.io.ObjectInputStream.readObject(Unknown Source)
 at java.rmi.MarshalledObject.get(Unknown Source)
 at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:57)
 at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:637)
 ... 3 more


      I don't know where i can get this class... I read that this class provides the client with the enterprise Bean's meta-data information.
      I dont't know what i can do... Please give me some advice...


      Here's my code:

      client code 

      package client;

import java.rmi.RMISecurityManager;

import javax.naming.*;

import server.Echo;

public class ejbclient {
 public static void main(String[] args) {
 try {
 System.setSecurityManager(new RMISecurityManager());
 InitialContext ctx = new InitialContext();
 Echo cal = (Echo) ctx.lookup(Echo.class.getName());
 System.out.println(cal.echotext());
 } catch (Exception e) {
 e.printStackTrace ();
 }
 }
 }



      server code 

      package server;

import javax.ejb.Stateless;

import server.Echo;

public @Stateless class EchoBean implements Echo {

 public String echotext() {
 return "testing remote EJB3";
 }

}


      server interface 

      package server;

import javax.ejb.Remote;

@Remote
public interface Echo {
 public String echotext();
}



      thanks in advance...

      • 3179 Views
      • Tags:
        • 1. Re: Problems running a remote client.. EJBMetaDataImpl class
          adrian_p
          adrian_p Aug 19, 2005 11:43 AM (in response to adrian_p)

          SOLVED... It was due to missing libraries on client side...

          http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3890762#3890762

            • Actions
          • 2. Re: Problems running a remote client.. EJBMetaDataImpl class
            yufeilu
            yufeilu Dec 18, 2005 8:47 AM (in response to adrian_p)

             

            "adrian_p" wrote:
            Hi,

            I'm trying to test a stateless bean with a remote client.. I've changed java.naming.provider.url=10.0.0.2:1099 in jndi.properties from default value, deployed my test bean to the server (tried it on JBOSS 4.0.2 and also on 4.0.3 RC2). When i try to run the client (on a remote machine) i get:

            javax.naming.CommunicationException [Root exception is java.lang.ClassNotFoundException: org.jboss.proxy.ejb.EJBMetaDataImpl]
 at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:713)
 at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572)
 at javax.naming.InitialContext.lookup(Unknown Source)
 at client.ejbclient.main(ejbclient.java:14)
Caused by: java.lang.ClassNotFoundException: org.jboss.proxy.ejb.EJBMetaDataImpl
 at java.net.URLClassLoader$1.run(Unknown Source)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.net.URLClassLoader.findClass(Unknown Source)
 at java.lang.ClassLoader.loadClass(Unknown Source)
 at java.lang.ClassLoader.loadClass(Unknown Source)
 at java.lang.ClassLoader.loadClassInternal(Unknown Source)
 at java.lang.Class.forName0(Native Method)
 at java.lang.Class.forName(Unknown Source)
 at sun.rmi.server.LoaderHandler.loadClass(Unknown Source)
 at sun.rmi.server.LoaderHandler.loadClass(Unknown Source)
 at java.rmi.server.RMIClassLoader$2.loadClass(Unknown Source)
 at java.rmi.server.RMIClassLoader.loadClass(Unknown Source)
 at sun.rmi.server.MarshalInputStream.resolveClass(Unknown Source)
 at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
 at java.io.ObjectInputStream.readClassDesc(Unknown Source)
 at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
 at java.io.ObjectInputStream.readObject0(Unknown Source)
 at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
 at java.io.ObjectInputStream.readSerialData(Unknown Source)
 at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
 at java.io.ObjectInputStream.readObject0(Unknown Source)
 at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
 at java.io.ObjectInputStream.readSerialData(Unknown Source)
 at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
 at java.io.ObjectInputStream.readObject0(Unknown Source)
 at java.io.ObjectInputStream.readObject(Unknown Source)
 at java.rmi.MarshalledObject.get(Unknown Source)
 at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:57)
 at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:637)
 ... 3 more


            I don't know where i can get this class... I read that this class provides the client with the enterprise Bean's meta-data information.
            I dont't know what i can do... Please give me some advice...


            Here's my code:

            client code

            package client;

import java.rmi.RMISecurityManager;

import javax.naming.*;

import server.Echo;

public class ejbclient {
 public static void main(String[] args) {
 try {
 System.setSecurityManager(new RMISecurityManager());
 InitialContext ctx = new InitialContext();
 Echo cal = (Echo) ctx.lookup(Echo.class.getName());
 System.out.println(cal.echotext());
 } catch (Exception e) {
 e.printStackTrace ();
 }
 }
 }



            server code

            package server;

import javax.ejb.Stateless;

import server.Echo;

public @Stateless class EchoBean implements Echo {

 public String echotext() {
 return "testing remote EJB3";
 }

}


            server interface

            package server;

import javax.ejb.Remote;

@Remote
public interface Echo {
 public String echotext();
}



            thanks in advance...


              • Actions