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

// 代理模式.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include<iostream>
using namespace std;
//定义一个代理和商人之间的接口
class interface_businessman_proxy
{
public:
    interface_businessman_proxy(){}
    ~interface_businessman_proxy(){}
    virtual void apple()=0;
    virtual void huawei()=0;
    virtual void zhongxing()=0;
    virtual void xiaomi()=0;
};
//商人类，被代理的类
class Businessman:public interface_businessman_proxy
{
public:
    Businessman(){}
    ~Businessman(){}
    virtual void apple()
    {
        cout<<"卖aphone"<<endl;
    }
    virtual void huawei()
    {
        cout<<"卖华为手机"<<endl;
    }
    virtual void zhongxing()
    {
        cout<<"买中兴手机"<<endl;
    }
    virtual void xiaomi()
    {
        cout<<"卖小米手机"<<endl;
    }
};
//代理类
class Proxy:public interface_businessman_proxy
{
private:
    interface_businessman_proxy *businessman;
public:
    Proxy()
    {
        businessman=new Businessman();
    }
    ~Proxy(){}
    virtual void apple()
    {
        (*businessman).apple();
    }
    virtual void huawei()
    {
        (*businessman).huawei();
    }
    virtual void zhongxing()
    {
        (*businessman).zhongxing();
    }
    virtual void xiaomi()
    {
        (*businessman).xiaomi();
    }
};
int _tmain(int argc, _TCHAR* argv[])
{
    Proxy *daili=new Proxy();
    (*daili).huawei();
    (*daili).xiaomi();
    return 0;
}