中间者模者模式原理：中介者维持所有要交互对象的指针或者对象，所有对象维持一个中介者的指针或者对象。
#include <iostream>
#include <string> using namespace std; class Mediator;
class Person
{
public:
virtual GetMessage(string message)
{ }
virtual void SendMessage(string message)
{ }
virtual void SetMediator(Mediator *pmdiator)
{ }
protected:
Mediator *m_pmediator;
}; class Mediator
{
public:
void Send(string message,Person *person)
{
if (person == m_renter)
{
m_landlord->GetMessage(message);
}
else
{
m_renter->GetMessage(message);
}
}
void SetRenter(Person *prenter)
{
m_renter = prenter;
}
void SetLandlord(Person *plandlord)
{
m_landlord = plandlord;
}
private:
Person *m_renter;
Person *m_landlord;
}; class Renter:public Person
{
public:
virtual GetMessage(string message)
{
cout << "租客收到租房信息："<<message<<endl;
}
virtual void SendMessage(string message)
{
m_pmediator->Send(message,this);
}
virtual void SetMediator(Mediator *pmediator)
{
m_pmediator = pmediator;
}
};
class Landlord:public Person
{
public:
virtual GetMessage(string message)
{
cout << "房东收到租房信息："<<message<<endl;
}
virtual void SendMessage(string message)
{
m_pmediator->Send(message,this);
}
virtual void SetMediator(Mediator *pmediator)
{
m_pmediator = pmediator;
}
}; int main()
{
Mediator *pmediator = new Mediator();
Person *prenter = new Renter();
Person *plandlord = new Landlord(); pmediator->SetLandlord(plandlord);
pmediator->SetRenter(prenter);
prenter->SetMediator(pmediator);
plandlord->SetMediator(pmediator); prenter->SendMessage("我要租一个有网的房子");
plandlord->SendMessage("我现在有一个两室一厅的房子要出租");
return 0;
}