从无状态bean创建有状态会话bean [英] Create a stateful session bean from a stateless bean

问题描述

上下文如下：

客户端应用程序使用无状态会话bean来登录EJB服务器应用程序。如果登录成功，则客户端应获取一个有状态会话Bean，以便对其个人数据执行某些事务。但是，我希望login方法返回此有状态会话Bean的新实例，以使客户端不应该能够通过身份验证手动调用此会话Bean并执行事务。可能吗 ？

An client application uses a stateless session bean in order to login on an EJB server application. If the login is successful, the client should get a stateful session bean in order to perform some transactions on his personal data. However, I would want that the login method returns a new instance of this stateful session bean such that a client should not be able to manually call this session bean and perform transactions without being authenticated. Is it possible ?

在我的无状态bean中，我有以下代码：

In my stateless bean I have the following code :

@Resource 
private SessionContext context;
...

public StatefulBeanRemote login(username, password) {
  if (ok) {
    StatefulBeanRemote bean = (StatefulBeanRemote) context.lookup("StatefulBeanRemote");
    return bean; 
  }

查找总是失败。我不知道我在做什么错...

The lookup always fail. I don't know what I am doing wrong...

推荐答案

您正在执行的查找与以下内容相同：

The lookup you're performing is the same as:

new InitialContext().lookup("java:comp/env/StatefulBeanRemote");

您是否已定义对StatefulBeanRemote的EJB引用？也许这就是您所需要的：

Have you defined an EJB reference to StatefulBeanRemote? Perhaps that is all you need:

@EJB(name="StatefulBeanRemote", beanInterface=StatefulBeanRemote.class)
public class MyClass {
    @Resource
    private SessionContext context;
    ...
}

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