JVM---JDK动态代理

package com.an.bytecode.jdkdtdl;

/**
 * @description:
 * @author: anpeiyong
 * @date: Created in 2020/4/7 15:03
 * @since:
 */
public interface Person {

    void say(String name);
}


package com.an.bytecode.jdkdtdl;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;

/**
 * @description:
 * @author: anpeiyong
 * @date: Created in 2020/4/7 15:02
 * @since:
 */
public class MyHandler implements InvocationHandler {
    @Override
    public Object invoke(Object proxy, Method method, Object[] args){
        System.out.println("执行的方法："+method);
        System.out.println("方法的参数：");
        for (Object o:args) {
            System.out.println(o.toString());
        }
        return null;
    }
}


package com.an.bytecode.jdkdtdl;

import java.lang.reflect.Proxy;

/**
 * @description:
 * @author: anpeiyong
 * @date: Created in 2020/4/7 15:02
 * @since:
 */
public class Test {

    public static void main(String[] args) {
        MyHandler handler=new MyHandler();
        Person personProxy=(Person) Proxy.newProxyInstance(Person.class.getClassLoader(),new Class[]{Person.class},handler);
        personProxy.say("hello...");
    }
}


结果：
执行的方法：public abstract void com.an.bytecode.jdkdtdl.Person.say(java.lang.String)
方法的参数：
hello...