如何在另一个托管Bean中访问一个托管Bean的属性 [英] How to access property of one managed bean in another managed bean

问题描述

我有一个托管bean(SessionScope如下)

I have a managed bean (SessionScope as follow)

@ManagedBean(name="login")
@SessionScoped
public class Login implements Serializable {

   private String userSession;
   public Login(){
   }
}

在此托管bean中，我在登录功能中的某处将电子邮件存储为会话.

In this managedbean, somewhere in the login function, i store the email as a session.

我还有一个名为ChangePassword(ViewScoped)的托管bean.我需要访问存储在userSession中的电子邮件的值.

I have another managed bean called ChangePassword (ViewScoped). I need to access the value of the email which is stored in the userSession.

这样做的原因是，我需要先找到当前的userSession(email)，然后才能完成更改密码功能. (需要更改该特定电子邮件的密码)

The reason of doing so is that i need to find out the current userSession(email) before i can complete the change password function. (Need change password for that specific email)

我该怎么做? JSF的新手，感谢您的帮助！

How do i do so? New to JSF, appreciate any help!

推荐答案

只需将一个bean作为另一个bean的托管属性进行注入.

Just inject the one bean as a managed property of the other bean.

@ManagedBean
@ViewScoped
public class ChangePassword {

    @ManagedProperty("#{login}")
    private Login login; // +setter (no getter!)

    public void submit() {
        // ... (the login bean is available here)
    }

    // ...
}

另请参见:

• JSF 2.0中的通信-在彼此

See also:

• Communication in JSF 2.0 - Injecting managed beans in each other

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