动态代理的实现

动态代理实现

• 创建一个接口类

package com.jiucheng.Proxy;

/**
*接口类
*/
public interface Iperson {

void eat();
String say();

}

• 实例化一个对象
• package com.jiucheng.Proxy;

/**

• person

• • @auther qiaoba

• @date 2020/9/14 0014 13:57
  **/
  public class person implements Iperson {
  @Override
  public void eat() {
  System.out.println(“我是一个吃人的方法…”);
  }

  @Override
  public String say() {
  System.out.println(“我是一个说话的方法…”);
  return “乔巴”;
  }

  public int myReflact(int a, int b){
  return a+b;
  }
  }

• 创建工厂类
  *package com.jiucheng.Proxy;

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

/**

• ProxyFactory

• • @auther qiaoba

• @date 2020/9/14 0014 13:58
  **/
  public class ProxyFactory {

  public static Object getProxyClass(Object object){
  return Proxy.newProxyInstance(object.getClass().getClassLoader(),
  object.getClass().getInterfaces(), new InvocationHandler() {
  @Override
  public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
  return method.invoke(object,args);
  }
  });
  }

  public static Object getProxyClass2(Object object){
  return Proxy.newProxyInstance(object.getClass().getClassLoader(),
  object.getClass().getInterfaces(), (proxy, method, args) -> method.invoke(object,args));
  }
  }

• 测试
  package com.jiucheng.Proxy;

/**

• mytest
• @auther qiaoba
• @date 2020/9/14 0014 14:01
  **/
  public class mytest {
  public static void main(String[] args) {
  Iperson proxyClass = (Iperson)ProxyFactory.getProxyClass(new person());
  proxyClass.eat();
  proxyClass.say();
  }
  }