限制使用Java注释的方法的执行 [英] Restrict execution of a Method with Java Annotations

问题描述

你知道吗，如果有，检查谁在调用一个方法，限制他们是否被允许Java注解来执行它的可能性？

例如，如果你有一个客户端和服务器。有几个用户，其中有不同的角色，它们登录到客户端。然后（在相同的客户端）与不同的用户想要呼叫getMethod在服务器上

我可以限制，允许谁调用此methos Java注解？

我爱：

  @Role（角色=AllowedRole）
公众的返回类型实现getMethod（）{
   ...
}
 

解决方案

好吧，我用缝/ DeltaSpike在JBoss服务器来实现这一目标。这是pretty简单。

基本上，你有你与你的注解注释的方法。例如，我是 @user ：

 公共类MyClass的{
    @用户
    公共对象实现getMethod（）{
        //执行
    }
}
 

接下来，你需要一个定义如何检查注解类：

 公共类限制{    @Secures @user
    公共布尔isOk（身份识别）{
        如果（identity.getUsername（彼得））{
            返回true;
        }
        返回false;
    }
}
 

这就是它！ Ofcourse，你需要一些库，并在某些XML文件（如beans.xml文件）来定义这些拦截的东西，但它可以用一个小Googling轻松完成。

从这些链接启动：

• Seam框架


• 问题我问在JBoss社区当我这个
  

Do you know, if there is the possibility to check who is calling a method and to restrict whether they are allowed to execute it with Java Annotations?

For example if you have a client and a server. There are several users, which have different roles and they login into the client. Then (the same client) with different users wants to call a getMethod on the server.

Can I restrict, who is allowed to call this methos with Java Annotations?

Like:

@Role(role="AllowedRole")
public ReturnType getMethod() {
   ...
}

解决方案

Well, I used to achieve this with Seam/DeltaSpike in JBoss Server. It's pretty straightforward.

Basically, you have a method which you annotate with your annotation. For example, mine is @User:

public class MyClass {
    @User
    public Object getMethod() {
        //implementation
    }
}

Next, you need a class where you define how you check your annotations:

public class Restrictions {

    @Secures @User
    public boolean isOk(Identity identity) {
        if (identity.getUsername("Peter")) {
            return true;
        }
        return false;
    }
}

That's it! Ofcourse, you need some libraries and to define these intercepting stuff in certain xml files (like beans.xml) but it can be easily done with a little googling.

Start from these links:

• Seam framework
• Questions I asked on JBoss community when I was starting with this

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