给一个从前台jsp到后台EJB的能跑得通的例子-----------非常感谢！------80分

<%@ page contentType="text/html;charset=gb2312" %>
<%@ page import="javax.naming.*" %>
<%@ page import="javax.ejb.*" %>
<%@ page import="java.rmi.RemoteException" %>
<%@ page import="java.rmi.Remote" %>
<%@ page import="java.util.*" %>
<%@ page import="MyConverter.ConverterDB" %>
<%@ page import="MyConverter.Converter" %>
<%@ page import="MyConverter.ConverterHome" %>
<%@ page import="MyConverter.ConverterEJB" %>
<html>
<head>
<title>Coverter</title>
</head>
<body>
<%   
       Properties h = new Properties();
       h.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");
       h.put(Context.PROVIDER_URL,"t3://localhost:7001");
       h.put(Context.SECURITY_PRINCIPAL,"system");
       h.put(Context.SECURITY_CREDENTIALS, "21098031");       Context initial = new InitialContext(h); 
       Object objref = initial.lookup("java:comp/env/ejb/MyConverter");        ConverterHome home =(ConverterHome)PortableRemoteObject.narrow(objref,ConverterHome.class);        Converter currency = (Converter) PortableRemoteObject.narrow(home.create(), Converter.class);
 
       double amof = currency.dollarToYen(100.00); 
       out.println(String.valueOf(amof)); %>
</body>
</html>