VIPJAVA/12306-demo/my-ticket-service/src/main/java/com/sf/design/proxy/CglibProxyDemo.java

package com.sf.design.proxy;

import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;

import java.io.IOException;
import java.lang.reflect.Method;

// cglib动态代理
// 添加jvm参数 --add-opens java.base/java.lang=ALL-UNNAMED
public class CglibProxyDemo {

    // 目标类
    static class MyLife {
        public void learn() {
            System.out.println("learn");
        }
    }

    public static void main(String[] args) throws IOException {
        // 目标对象
        MyLife myLife = new MyLife();
        // 接收代理对象
        // cglib的动态代理是基于 继承目标类  extends MyLife
        MyLife object = (MyLife)Enhancer.create(MyLife.class, new MethodInterceptor() {
            @Override
            public Object intercept(Object o, Method method, Object[] objects, MethodProxy methodProxy) throws Throwable {
                System.out.println("before");
                Object result = method.invoke(myLife, objects);
                System.out.println("after");
                return result;
            }
        });
        object.learn();

        System.out.println(object.getClass());
        System.in.read();
    }
}