JSP如何与EJB SessionBean通讯

<%@ page import="javax.naming.*, javax.rmi.PortableRemoteObject, 
foo.AccountHome, foo.Account" %> 
<%! 
//定义一个对SessionBeanHome接口实例的全局引用 
AccountHome accHome=null; 

public void jspInit() { 
//获得Home接口实例 
InitialContext cntxt = new InitialContext( ); 
Object ref= cntxt.lookup("java:comp/env/ejb/AccountEJB"); 
accHome = (AccountHome)PortableRemoteObject.narrow(ref,AccountHome.class); 
} 
%> 

<% 
//实例化SessionBean 
Account acct = accHome.create(); 
//调用远程方法 
acct.doWhatever(...); 
// 如此等等 
%>