如何在AspectJ中添加“之后”方法？

Question

I'm trying to understand how AspectJ works. To begin I want to add a method called after , calling usual existing using AspectJ.

myClass can be seen below:

package myclass;
public class MyClass {

    public void method1(){
        System.out.println("methode1 is called");
    }

    public void method2(String str){
        System.out.println("methode2 is called " + str);
    }
}

After method2 I want to show some text message and argument str :

package myclass;

public aspect aspect2 {
    pointcut func(String str): 
        call(myclass.MyClass.method2(String)) &&  args(str);
    after(String str) : func(str) {
        System.out.println("Aspect from method2: " + str );
    }
}

Finally to call it there is main class entrypoint :

package myclass;
public class entrypoint {
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        MyClass mc = new MyClass();
        mc.method1();
        mc.method2("zzz");
    }
}

As an input, it shows :

methode1 is called
methode2 is called zzz

It does not show Aspect from method2: zzz , so aspect doesn't work. What am I doing wrong?

Answer 1

I post my comment as an answer as @kriegaex ask. You have some mistake in the code: 1. In the pointcut you forgot to add the return type even if it's void you should specified it. 2. In the advice add returning after(String str) returning : func(str)

package myclass;
public aspect aspect2 {
        pointcut func(String str): call(void myclass.MyClass.method2(String)) &&  args(str);
    after(String str) returning : func(str) {
        System.out.println("Aspect from method2: " + str );
    }
}