classe cast exception en étroite jndi reffrence dans ejb

Je suis en train d'écrire un simple apatrides sesssion bean, mais j'ai un problème avec d'étroites de référence, je donne en recherche de temps.
J'ai eu

classe fonte d'exeption

- Je utiliser

de l'IDE eclipse

mon haricot classe

package codes;
import java.rmi.RemoteException;

import javax.ejb.EJBException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;


public class SinaBean implements SessionBean {


    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    public String getHello()
    {
        return "hello";
    }
    public void ejbCreate(){

    }
    @Override
    public void ejbActivate() throws EJBException, RemoteException {
        //TODO Auto-generated method stub

    }

    @Override
    public void ejbPassivate() throws EJBException, RemoteException {
        //TODO Auto-generated method stub

    }

    @Override
    public void ejbRemove() throws EJBException, RemoteException {
        //TODO Auto-generated method stub

    }

    @Override
    public void setSessionContext(SessionContext arg0) throws EJBException,
            RemoteException {
        //TODO Auto-generated method stub

    }

}

mon interface d'accueil

package codes;

import java.rmi.RemoteException;

import javax.ejb.CreateException;
import javax.ejb.EJBHome;

public interface SinaHome extends EJBHome {

    public SinaObject create() throws RemoteException,CreateException;
}

mon composant

package codes;

import java.rmi.RemoteException;

import javax.ejb.EJBObject;

public interface SinaObject extends EJBObject {

    String getHello() throws RemoteException;
}

mon client

package codes;

import java.util.Properties;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.rmi.PortableRemoteObject;

public class Client {

    /**
     * @param args
     */
    public static void main(String[] args) {
        Context con=null;
        try {   
            Properties p=new Properties();
            p.setProperty(Context.INITIAL_CONTEXT_FACTORY,
            "org.jnp.interfaces.NamingContextFactory");
            p.setProperty(Context.PROVIDER_URL, "localhost:1099");
            p.setProperty(Context.URL_PKG_PREFIXES,
            "org.jboss.namingrg.jnp.interfaces");
            con = new InitialContext(p);
            Object o=con.lookup("SinaBean");
                       System.out.println(o);/***/untill know it works.it sysout : 
                       //org.jnp.interfaces.NamingContext@e83912*** 

            @SuppressWarnings("unused")
            SinaHome sh=(SinaHome)PortableRemoteObject.narrow(o, SinaHome.class);//***exeption is here!!***
        } catch (Exception e) {
            //TODO Auto-generated catch block
            e.printStackTrace();
        }


    }

}

mon fichier xml

<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/ejb-jar_3_0.xsd">
  <display-name>Ejb </display-name> 
  <enterprise-beans>

  <session>

  <display-name>SinaBean</display-name>
  <ejb-name>SinaBean</ejb-name>
  <home>codes.SinaHome</home>
  <remote>codes.SinaObject</remote>
  <ejb-class>codes.SinaBean</ejb-class> 
  <session-type>Stateless</session-type>
  <transaction-type>Bean</transaction-type> 

  <security-identity>
  <description></description>
  <use-caller-identity></use-caller-identity>
  </security-identity> 

  </session>

  </enterprise-beans>

 </ejb-jar>

l'exception-je recevoir

java.lang.ClassCastException
    at com.sun.corba.se.impl.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:229)
    at javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:137)
    at codes.Client.main(Client.java:27)
Caused by: java.lang.ClassCastException: org.jnp.interfaces.NamingContext cannot be cast to org.omg.CORBA.Object
    at com.sun.corba.se.impl.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:212)
    ... 2 more

Je serai extrêmement reconnaissant pour vos conseils.

OriginalL'auteur sara | 2011-07-25