【设计模式学习笔记】代理模式

比眉伴天荒 2022-03-26 08:12 265阅读 0赞

> 代理模式：本身不干活，干活的时候找别人去干。

## 文章目录 ##

[1.1 接口][1.1]

[1.2 实现][1.2]

[1.3 测试][1.3]

[1.4 结果][1.4]

[1.5 UML][]

[参考][Link 1]

##  1.1 接口 ##

package proxy;
    
    /************************************************
     *@ClassName : CompanyWorkI
     *@Description : TODO
     *@Author : NikolaZhang
     *@Date : 【2018/11/29 20:27】
     *@Version : 1.0.0
     *************************************************/
    
    public interface CompanyWorkI {
        void buyMetal();
        void designCar();
    }

##  1.2 实现 ##

package proxy;
    
    /************************************************
     *@ClassName : CompanyA
     *@Description : TODO
     *@Author : NikolaZhang
     *@Date : 【2018/11/29 20:27】
     *@Version : 1.0.0
     *************************************************/
    
    public class CompanyA implements CompanyWorkI {
    
        @Override
        public void buyMetal() {
            System.out.println("A公司买材料");
        }
    
        @Override
        public void designCar() {
            System.out.println("A公司设计车");
        }
    }

下面的这个虽然也实现了 `CompanyWorkI` 但他实际是不干接口中的工作的的。

package proxy;
    
    /************************************************
     *@ClassName : CompanyB
     *@Description : TODO
     *@Author : NikolaZhang
     *@Date : 【2018/11/29 20:29】
     *@Version : 1.0.0
     *************************************************/
    
    public class CompanyDad implements CompanyWorkI {
        private CompanyWorkI companyWorkI;
    
        public CompanyDad(CompanyWorkI companyWorkI){
            this.companyWorkI = companyWorkI;
        }
        public CompanyDad(){
            this.companyWorkI = new CompanyA();
        }
    
        @Override
        public void buyMetal() {
            companyWorkI.buyMetal();
        }
    
        @Override
        public void designCar() {
            companyWorkI.designCar();
        }
    
        public void makeCar(){
            System.out.println("dad公司生产车");
        }
    }

## 1.3 测试  ##

package proxy;
    
    /************************************************
     *@ClassName : Test
     *@Description : TODO
     *@Author : NikolaZhang
     *@Date : 【2018/11/29 20:37】
     *@Version : 1.0.0
     *************************************************/
    
    public class Test {
        public static void main(String[] args) {
            CompanyDad companyDad = new CompanyDad();
            companyDad.buyMetal();
            companyDad.designCar();
            companyDad.makeCar();
        }
    }

##  1.4 结果 ##

![2018121610030953.png][]

## 1.5 UML  ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzMwMzI1MDA5_size_16_color_FFFFFF_t_70][]

## 参考 ##

【菜鸟教程】：[http://www.runoob.com/design-pattern/proxy-pattern.html][http_www.runoob.com_design-pattern_proxy-pattern.html]

本文原文地址：[https://blog.csdn.net/baidu\_30325009/article/details/85028471][https_blog.csdn.net_baidu_30325009_article_details_85028471]

[1.1]: https://blog.csdn.net/baidu_30325009/article/details/85028471#11__5
[1.2]: https://blog.csdn.net/baidu_30325009/article/details/85028471#12__24
[1.3]: https://blog.csdn.net/baidu_30325009/article/details/85028471#13__91
[1.4]: https://blog.csdn.net/baidu_30325009/article/details/85028471#14__112
[1.5 UML]: https://blog.csdn.net/baidu_30325009/article/details/85028471#15_UML_114
[Link 1]: https://blog.csdn.net/baidu_30325009/article/details/85028471#_117
[2018121610030953.png]: /images/20220326/a64ec650923542bb92ebe35063937da7.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzMwMzI1MDA5_size_16_color_FFFFFF_t_70]: /images/20220326/e103fd025ab2434ea779aecf6946d916.png
[http_www.runoob.com_design-pattern_proxy-pattern.html]: http://www.runoob.com/design-pattern/proxy-pattern.html
[https_blog.csdn.net_baidu_30325009_article_details_85028471]: https://blog.csdn.net/baidu_30325009/article/details/85028471