代理模式

一、相关介绍

1、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

2、UML图

3、所属类别：结构型

3、C++程序

 1 // 代理模式.cpp : 定义控制台应用程序的入口点。
 2 //
 3 
 4 #include "stdafx.h"
 5 #include<iostream>
 6 using namespace std;
 7 //定义一个代理和商人之间的接口
 8 class interface_businessman_proxy
 9 {
10 public:
11     interface_businessman_proxy(){}
12     ~interface_businessman_proxy(){}
13     virtual void apple()=0;
14     virtual void huawei()=0;
15     virtual void zhongxing()=0;
16     virtual void xiaomi()=0;
17 };
18 //商人类，被代理的类
19 class Businessman:public interface_businessman_proxy
20 {
21 public:
22     Businessman(){}
23     ~Businessman(){}
24     virtual void apple()
25     {
26         cout<<"卖aphone"<<endl;
27     }
28     virtual void huawei()
29     {
30         cout<<"卖华为手机"<<endl;
31     }
32     virtual void zhongxing()
33     {
34         cout<<"买中兴手机"<<endl;
35     }
36     virtual void xiaomi()
37     {
38         cout<<"卖小米手机"<<endl;
39     }
40 };
41 //代理类
42 class Proxy:public interface_businessman_proxy
43 {
44 private:
45     interface_businessman_proxy *businessman;
46 public:
47     Proxy()
48     {
49         businessman=new Businessman();
50     }
51     ~Proxy(){}
52     virtual void apple()
53     {
54         (*businessman).apple();
55     }
56     virtual void huawei()
57     {
58         (*businessman).huawei();
59     }
60     virtual void zhongxing()
61     {
62         (*businessman).zhongxing();
63     }
64     virtual void xiaomi()
65     {
66         (*businessman).xiaomi();
67     }
68 };
69 int _tmain(int argc, _TCHAR* argv[])
70 {
71     Proxy *daili=new Proxy();
72     (*daili).huawei();
73     (*daili).xiaomi();
74     return 0;
75 }