(1).静态代理

定义同一种类型的接口
定义同一种类型接口的实现
定义代理类

1.先定义一种类型的女人：

package proxy;/*** * 定义一种类型的女人，王婆和潘金莲都属于这个类型的女人** @author 1* @version 1.0* @description: TODO* @date 2023/8/14 14:43*/
public interface KindWomen {/*** 抛媚眼*/public void makeEyesWithMan();/*** 开心约会*/public void happyWithMan();}

2.实现接口

package proxy;/*** 潘金莲** @author 1* @version 1.0* @description: TODO* @date 2023/8/14 14:45*/
public class PanJinLian implements KindWomen {@Overridepublic void makeEyesWithMan() {System.out.println("潘金莲抛媚眼");}@Overridepublic void happyWithMan() {System.out.println("潘金莲和男人开心约会");}
}

3.定义代理类

package proxy;/*** 代理类* 王婆(帮忙给西门庆代理)** @author 1* @version 1.0* @description: TODO* @date 2023/8/14 14:46*/
public class WangPo implements KindWomen {private KindWomen kindWomen;/*** 王婆默认就是潘金莲的代理*/public WangPo() {this.kindWomen = new PanJinLian();}/*** 王婆可以代理这个类型的所有人** @param kindWomen*/public WangPo(KindWomen kindWomen) {this.kindWomen = kindWomen;}@Overridepublic void makeEyesWithMan() {//实际做事的是代理类this.kindWomen.makeEyesWithMan();}@Overridepublic void happyWithMan() {//实际做事的是代理类this.kindWomen.happyWithMan();}
}

4.找到代理类进行调用

package proxy;/*** 西门庆** @author 1* @version 1.0* @description: TODO* @date 2023/8/14 14:50*/
public class XiMenQing {public static void main(String[] args) {System.out.println("(1)静态代理******************");//西门庆找到王婆,然后王婆就作为代理,帮忙安排了和潘金莲的约会WangPo wangPo = new WangPo();//王婆默认的代理就是潘金莲wangPo.makeEyesWithMan();wangPo.happyWithMan();//传参数执行WangPo wangPo2 = new WangPo(new PanJinLian());wangPo2.makeEyesWithMan();wangPo2.happyWithMan();System.out.println("(2)动态代理******************");KindWomen kindWomen = (KindWomen)new ProxyFactory(new PanJinLian()).getProxyInstance();System.out.println("生成的代理对象"+kindWomen.getClass());kindWomen.makeEyesWithMan();kindWomen.happyWithMan();}
}

(2).动态代理

package proxy;import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;/*** @author 1* @version 1.0* @description: TODO* @date 2023/8/14 14:58*/
public class ProxyFactory {//维护一个目标对象 , Objectprivate Object target;//构造器 ， 对target 进行初始化public ProxyFactory(Object target) {this.target = target;}//动态生成一个代理对象public Object getProxyInstance() {return Proxy.newProxyInstance(target.getClass().getClassLoader(),target.getClass().getInterfaces(),new InvocationHandler() { //匿名类重写invoke方法@Overridepublic Object invoke(Object proxy, Method method, Object[] args) throws Throwable {System.out.println("动态代理开始");Object returnVal = method.invoke(target, args);//反射机制调用目标对象的方法System.out.println("动态代理结束");return returnVal;}});}
}

执行结果如下: