我可以将EJB Stateless Bean与CDI一起使用来维护用户会话吗? [英] Can I use EJB Stateless Bean with CDI to maintain user session?

问题描述

基于此帖子 http://www.adam-bien.com/roller/abien/entry/ejb_3_1_killed_the 我在应用程序@Named @Stateless bean中使用它与数据库进行通信(在此处注入EntityManager)，并在jsf页面上显示信息.自Java EE 5以来，这非常方便.但是我有一个问题.

Based on this post http://www.adam-bien.com/roller/abien/entry/ejb_3_1_killed_the I use in my app @Named @Stateless bean for communication with a database (injecting EntityManager here) and display information on a jsf page. It's great facilitation since Java EE 5, but I have one question.

使用此类bean维护用户会话(购物车等)是否安全?我读了一本关于ejb 3.0的书，我知道许多客户都可以使用同一个无状态bean.

Is it secure to use such beans for maintaining a user session (shopping cart etc)? I read a book about ejb 3.0 and I know that the same stateless bean could be used with many clients.

使用具有所有ejb功能(事务，线程安全性等)的托管bean的最佳方法是什么?我的意思是，除了Java EE 5中的托管Bean +具有实现+ ejb注入的ejb接口之外，还有其他方法吗?

What's the best approach to use a managed bean with all ejb features (transactions, thread safety etc)? I mean any other way than managed bean + ejb interface with implementation + ejb injection as in Java EE 5?

我使用GlassFish 3.1 WebProfile

I use GlassFish 3.1 WebProfile

推荐答案

无状态Bean无法维护购物车或会话；这就是无状态"的意思.

Stateless beans cannot maintain shopping carts or session; that's what "stateless" means.

您需要有状态EJB或在Web层中进行操作.那是唯一可以维持会话的地方.

You need either a stateful EJB or to do it in the web tier. Those are the only places where session is maintained.

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