找出调用我的方法

Question

I'm tring to find out a way to get the complete method signature that is calling me.

For example:

public class Called {

    public void whoCallMe() {
        System.out.println("Caller Method: " + new Throwable().getStackTrace()[1].getMethodName());
    }
}

public class Caller {

public static void run(int i) {
    new Called().whoCallMe();
}

public static void run(String str) {
    new Called().whoCallMe();
}

public static void run(boolean b) {
    new Called().whoCallMe();
}

/** MAIN **/
public static void main(String[] args) {
    run("hi");
}

The way I've implemented whoCallMe() method I can see that run method called it, but since I 3 overloads I can't say which one was the caller cause whoCallme return only "run" as the method name.

Do you guys know other way where I could get the complete method signature like run(java.lang.String)?

Answer 1

You can use AspectJ to create an aspect which will apply to every method invocation and add the details about the method being invoked to a per-thread stack, and then remove it after method completes. It's going to be insanely expensive, of course. Most likely you don't want to do that. Also you don't want to throw anything to find out who called you.

Basically the answer to your question is: do not do it. Explain why you think you want to do it and somebody will give you a good alternative.

Also, come to think of it, you can argue that method overloading (not overriding.) is considered harmful? Do you really need multiple different methods with different arguments and the same name?