本文共 1536 字，大约阅读时间需要 5 分钟。

中介者模式属于行为型模式。

定义：采用一个中介对象来封装一系列的对象交互。

优点：使得各个对象不需要显式的相互引用，达到解耦的效果。

UML类图

栗子场景：买房和卖房都担心被骗，然后通过房产中介做交互

代码

#include 
   
    #include 
    
     using namespace std;class HousePerson;class BuyHousePerson;class SellHousePerson;//抽象中介类class Mediator{public:	virtual void sendMessage(string msg, HousePerson *p) = 0;};//抽象炒房客class HousePerson{public:	HousePerson(Mediator *mediator)	{		m_mediator = mediator;	}protected:	Mediator *m_mediator;};//买房的人class BuyHousePerson :public HousePerson{public:	BuyHousePerson(Mediator *mediator) :HousePerson(mediator){}	void sendMsg(string msg)	{		m_mediator->sendMessage(msg,this);	}	void notify(string msg)	{		cout << "买房者得到消息：" << msg << endl;	}};//卖房的人class SellHousePerson :public HousePerson{public:	SellHousePerson(Mediator *mediator) :HousePerson(mediator){}	void sendMsg(string msg)	{		m_mediator->sendMessage(msg, this);	}	void notify(string msg)	{		cout << "卖-房者得到消息：" << msg << endl;	}};//具体中介类class ConcreteMediator :public Mediator{public:	void sendMessage(string msg, HousePerson *p)	{		if (p == bh)		{			sh->notify(msg);		}		else		{			bh->notify(msg);		}	}public:	BuyHousePerson *bh;	SellHousePerson *sh;};//客户端int main(){	ConcreteMediator *pM = new ConcreteMediator;	BuyHousePerson *pBh = new BuyHousePerson(pM);	SellHousePerson* pSh = new SellHousePerson(pM);	pM->bh = pBh;	pM->sh = pSh;	pBh->sendMsg("卖不卖，一口价780W");	pSh->sendMsg("不卖，至少800W！");	if (pM)	{		delete pM;		pM = nullptr;	}	if (pBh)	{		delete pBh;		pBh = nullptr;	}	if (pSh)	{		delete pSh;		pSh = nullptr;	}	return 0;}
    
   

效果：

转载地址：https://blog.csdn.net/c_shell_python/article/details/107543350 如侵犯您的版权，请留言回复原文章的地址，我们会给您删除此文章，给您带来不便请您谅解！