子类中带有注释的Aspectj切入点方法

Question

class Fragment1{
   createView(SomeObject p1, AnoterObject p2)
}

@AutoLayout(String annotationParam)
class Fragment2 extends Fragment1{
}

add：如果我将方法存根添加到Fragment2中，就可以开始使用next annotation@around（“createMethod（flater,group,savedState)&@inner（autoInflate）”），但这是一个非常难看的解决方案

解决方案：多亏了@Kriegaex，我找到了解决方案：

@Around("execution(* com.github.a_kokulyuk.kotakt.ui.BaseFragment+.*(*, *, *)) && args(inflater, parent, savedState) && @this(an)")
    public Object doLayout(ProceedingJoinPoint jo, LayoutInflater inflater, ViewGroup parent, Bundle savedState, AutoLayout an) throws Throwable {
        return inflater.inflate(an.value(), parent, false);
    }

Answer 1

根据这个注释：

java prettyprint-override">package de.scrum_master.app;

import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;

@Retention(RetentionPolicy.RUNTIME)
public @interface MyAnnotation {}

让我们假设我们有三个类：

• 无注释的父类，
• 没有注释和
的普通子类
• 带注释的子类:

package de.scrum_master.app;

public class Parent {
    public void doSomething() {}
}

package de.scrum_master.app;

public class PlainChild extends Parent {
    int doSomethingElse() { return 11; }
}

package de.scrum_master.app;

@MyAnnotation
public class AnnotatedChild extends Parent {
    String doSomethingSpecial(int number) { return ""; }
}

package de.scrum_master.app;

public class Application {
    public static void main(String[] args) {
        new Parent().doSomething();
        new PlainChild().doSomething();
        new PlainChild().doSomethingElse();
        new AnnotatedChild().doSomething();
        new AnnotatedChild().doSomethingSpecial(123);
    }
}

package de.scrum_master.aspect;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;

@Aspect
public class MyAspect {
    @Around(
        "execution(* de.scrum_master.app.Parent+.*(..)) && " +
        "@this(de.scrum_master.app.MyAnnotation)"
    )
    public Object myAdvice(ProceedingJoinPoint thisJoinPoint) {
        System.out.println(thisJoinPoint);
        System.out.println("  " + thisJoinPoint.getThis());
        return thisJoinPoint.proceed();
    }
}

execution(void de.scrum_master.app.Parent.doSomething())
  de.scrum_master.app.AnnotatedChild@681a9515
execution(String de.scrum_master.app.AnnotatedChild.doSomethingSpecial(int))
  de.scrum_master.app.AnnotatedChild@13221655