Error casting looked up ejb

[Jeffrey Coleman]

I'm just trying to get a working example up. I am using rad and running this on the built in websphere server version seven. The app that I am eventually going to be developing with EJBs will be using JEE5 so I cannot use the @EJB annotation outside of the container so I am learning how to do the lookup.

The error msg that I get is this:

Error 500: java.lang.ClassCastException: ejb.EJSLocal0SLHelloEJB_9fbc1047 incompatible with ejb.HelloEJB

Here is the code for the servelet

import java.io.IOException;
import java.io.PrintWriter;

import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import ejb.HelloEJB;


public class EJBServ extends HttpServlet {
	private static final long serialVersionUID = 1L;
    private HelloEJB hellobean = null;
    private InitialContext ctx;
    private PrintWriter out;

    public EJBServ() {
        super();

    }


	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doPost(request,response);
	}


	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
		
		
		try {
			ctx = new InitialContext();
		} catch (NamingException e) {
			out.println(e.getMessage());
		}
		
		try {
			hellobean =  (HelloEJB) ctx.lookup("java:comp/env/ejb/HelloEJB");
		} catch (NamingException e) {
			// TODO Auto-generated catch block
			out.println(e.getMessage());
		}
		

	}
	
	

}

And here is the web.xml

<?xml version="1.0" encoding="UTF-8"?> <web-app id="WebApp_ID" version="2.5" 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/web-app_2_5.xsd"> <display-name>EJBWeb</display-name> <servlet> <description> </description> <display-name>EJBServ</display-name> <servlet-name>EJBServ</servlet-name> <servlet-class>EJBServ</servlet-class> </servlet> <servlet-mapping> <servlet-name>EJBServ</servlet-name> <url-pattern> /EJBServ</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <ejb-local-ref> <description /> <ejb-ref-name>ejb/HelloEJB</ejb-ref-name> <ejb-ref-type>Session</ejb-ref-type> <local-home /> <local>ejb.HelloEJBLocal</local> <ejb-link>HelloEJB</ejb-link> </ejb-local-ref> </web-app>

This is the EJB

package ejb;

import javax.ejb.Stateless;


@Stateless(mappedName = "HelloEJB")
public class HelloEJB implements HelloEJBLocal {
	private String name;
	
    public HelloEJB() {
        // TODO Auto-generated constructor stub
    }

	@Override
	public void setHello() {
		this.name = "Jeff";
		
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getName() {
		return name;
	}

}

And here is the local interface

package ejb;
import javax.ejb.Local;

@Local
public interface HelloEJBLocal {
	
	public void setHello();

}

Any help would be much appreciated. Thanks in advance.

[Jeanne Boyarsky]

Does it work if you cast to HelloEJBLocal? The idea of the interfaces is to refer to them rather than bean implementation.

[Jeffrey Coleman]

Yes that works. Thank you.