我看懂的设计模式 Proxy，代理模式

Proxy，代理模式：为其他对象提供一种代理以控制对这个对象的访问

 

 

package com.cbf4life.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
*/
public interface KindWomen {
public void makeEyesWithMan();
}

package com.cbf4life.proxy;
public class PanJinLian implements KindWomen {

public void makeEyesWithMan() {
System.out.println("潘金莲抛媚眼");
}
}

package com.cbf4life.proxy;
public class WangPo implements KindWomen {
private KindWomen kindWomen;
public WangPo(){ //默认的话，是潘金莲的代理
this.kindWomen = new PanJinLian();
}
//她可以是KindWomen的任何一个女人的代理
public WangPo(KindWomen kindWomen){
this.kindWomen = kindWomen;
}
public void makeEyesWithMan() {
this.kindWomen.makeEyesWithMan(); //王婆这么大年龄了，谁看她抛媚眼？！
}
}

 

package com.cbf4life.proxy;

public class XiMenQing {

public static void main(String[] args) {
//把王婆叫出来
WangPo wangPo = new WangPo();
wangPo.makeEyesWithMan(); //看到没，虽然表面上时王婆在做，实际上是潘金莲
}
}

 

 

 

package com.cbf4life.proxy;

public class JiaShi implements KindWomen {
public void makeEyesWithMan() {
System.out.println("贾氏抛媚眼");
}
}
package com.cbf4life.proxy;

public class XiMenQing {
public static void main(String[] args) {
//改编一下历史，贾氏被西门庆勾走：
JiaShi jiaShi = new JiaShi();
WangPo wangPo = new WangPo(jiaShi); //让王婆作为贾氏的代理人
wangPo.makeEyesWithMan();
}
}