创建型模式のAbstractFactory抽象工厂模式

抽象工厂，提供一个创建一系列相关或相互依赖对象的接口，而无需指定它们具体的类。对于工厂方法来说，抽象工厂可实现一系列产品的生产，抽象工厂更注重产品的组合。

看代码：

7.1.解释

main()，女娲

IHuman，产品接口

CYellowHuman，抽象产品之一

CYellowFemaleHuman，具体产品之一

CYellowMaleHuman，具体产品之二

CWhiteHuman，抽象产品之二

CWhiteFemaleHuman，具体产品之三

CWhiteMaleHuman，具体产品之四

CBlackHuman，抽象产品之三

CBlackFemaleHuman，具体产品之五

CBlackMaleHuman，具体产品之六

IHumanFactory，抽象工厂

CStandardHumanFactory，抽象工厂基类（此类可有可无）

CFemaleHumanFactory，工厂之一

CMaleHumanFactory，工厂之二

 1 //IHuman.h
 2 
 3 #pragma once
 4 class IHuman
 5 {
 6 public:
 7 
 8     IHuman(void)
 9     {
10     }
11 
12     virtual ~IHuman(void)
13     {
14     }
15 
16     virtual void Laugh() = 0;
17     virtual void Cry() = 0;
18     virtual void Talk() = 0;
19     virtual void Sex() = 0;
20 };

 1 //YellowHuman.h
 2 
 3 #pragma once
 4 #include "ihuman.h"
 5 #include <iostream>
 6 using std::cout;
 7 using std::endl;
 8 class CYellowHuman :
 9     public IHuman
10 {
11 public:
12     CYellowHuman(void)
13     {
14     }
15     ~CYellowHuman(void)
16     {
17     }
18     void Laugh()
19     {
20         cout << "黄色人种会大笑，幸福呀！" << endl;
21     }
22     void Cry()
23     {
24         cout << "黄色人种会哭" << endl;
25     }
26     void Talk()
27     {
28         cout << "黄色人种会说话，一般说的都是双字节" << endl;
29     }
30     virtual void Sex() = 0;
31 };

 1 //YellowFemaleHuman.h
 2 
 3 #pragma once
 4 #include "yellowhuman.h"
 5 #include <iostream>
 6 using std::cout;
 7 using std::endl;
 8 class CYellowFemaleHuman :
 9     public CYellowHuman
10 {
11 public:
12     CYellowFemaleHuman(void)
13     {
14     }
15     ~CYellowFemaleHuman(void)
16     {
17     }
18     void Sex()
19     {
20         cout << "该黄种人的性别为女..." << endl;
21     }
22 };
23 
24 //YellowMaleHuman.h
25 
26 #pragma once
27 #include "yellowhuman.h"
28 #include <iostream>
29 using std::cout;
30 using std::endl;
31 class CYellowMaleHuman :
32     public CYellowHuman
33 {
34 public:
35     CYellowMaleHuman(void)
36     {
37     }
38     ~CYellowMaleHuman(void)
39     {
40     }
41     void Sex()
42     {
43         cout << "该黄种人的性别为男..." << endl;
44     }
45 };

 1 //WhiteHuman.h
 2 
 3 #pragma once
 4 #include "ihuman.h"
 5 #include <iostream>
 6 using std::cout;
 7 using std::endl;
 8 class CWhiteHuman :
 9     public IHuman
10 {
11 public:
12     CWhiteHuman(void)
13     {
14     }
15     ~CWhiteHuman(void)
16     {
17     }
18     void Laugh()
19     {
20         cout << "白色人种会大笑，侵略的笑声" << endl;
21     }
22     void Cry()
23     {
24         cout << "白色人种会哭" << endl;
25     }
26     void Talk()
27     {
28         cout << "白色人种会说话，一般都是单字节" << endl;
29     }
30     virtual void Sex() = 0;
31 };

 1 //WhiteFemaleHuman.h
 2 
 3 #pragma once
 4 #include "whitehuman.h"
 5 #include <iostream>
 6 using std::cout;
 7 using std::endl;
 8 class CWhiteFemaleHuman :
 9     public CWhiteHuman
10 {
11 public:
12     CWhiteFemaleHuman(void)
13     {
14     }
15     ~CWhiteFemaleHuman(void)
16     {
17     }
18     void Sex()
19     {
20         cout << "该白种人的性别为女..." << endl;
21     }
22 };
23 
24 //WhiteMaleHuman.h
25 
26 #pragma once
27 #include "whitehuman.h"
28 #include <iostream>
29 using std::cout;
30 using std::endl;
31 class CWhiteMaleHuman :
32     public CWhiteHuman
33 {
34 public:
35     CWhiteMaleHuman(void)
36     {
37     }
38     ~CWhiteMaleHuman(void)
39     {
40     }
41     void Sex()
42     {
43         cout << "该白种人的性别为男..." << endl;
44     }
45 };

 1 //BlackHuman.h
 2 
 3 #pragma once
 4 #include "ihuman.h"
 5 #include <iostream>
 6 using std::cout;
 7 using std::endl;
 8 class CBlackHuman :
 9     public IHuman
10 {
11 public:
12     CBlackHuman(void)
13     {
14     }
15     ~CBlackHuman(void)
16     {
17     }
18     void Laugh()
19     {
20         cout << "黑人会笑" << endl;
21     }
22     void Cry()
23     {
24         cout << "黑人会哭" << endl;
25     }
26     void Talk()
27     {
28         cout << "黑人可以说话，一般人听不懂" << endl;
29     }
30 
31     virtual void Sex() = 0;
32 };

 1 //BlackFemaleHuman.h
 2 
 3 #pragma once
 4 #include "blackhuman.h"
 5 #include <iostream>
 6 using std::cout;
 7 using std::endl;
 8 class CBlackFemaleHuman :
 9     public CBlackHuman
10 {
11 public:
12     CBlackFemaleHuman(void)
13     {
14     }
15     ~CBlackFemaleHuman(void)
16     {
17     }
18     void Sex()
19     {
20         cout << "该黑种人的性别为女..." << endl;
21     }
22 };
23 //BlackMaleHuman.h
24 
25 #pragma once
26 #include "blackhuman.h"
27 #include <iostream>
28 using std::cout;
29 using std::endl;
30 class CBlackMaleHuman :
31     public CBlackHuman
32 {
33 public:
34     CBlackMaleHuman(void)
35     {
36     }
37     ~CBlackMaleHuman(void)
38     {
39     }
40     void Sex()
41     {
42         cout << "该黑种人的性别为男..." << endl;
43     }
44 };

 1 //IHumanFactory.h
 2 
 3 #pragma once
 4 #include "IHuman.h"
 5 class IHumanFactory
 6 {
 7 public:
 8     IHumanFactory(void)
 9     {
10     }
11     virtual ~IHumanFactory(void)
12     {
13     }
14     virtual IHuman * CreateYellowHuman() = 0;
15     virtual IHuman * CreateWhiteHuman() = 0;
16     virtual IHuman * CreateBlackHuman() = 0;
17 };

 1 //StandardHumanFactory.h
 2 
 3 #pragma once
 4 #include "ihumanfactory.h"
 5 #include "IHuman.h"
 6 template<class T>
 7 class CStandardHumanFactory :
 8     public IHumanFactory
 9 {
10 public:
11     CStandardHumanFactory(void)
12     {
13     }
14     ~CStandardHumanFactory(void)
15     {
16     }
17     IHuman * CreateHuman()
18     {
19         return new T;
20     }
21 };

 1 //MaleHumanFactory.h
 2 
 3 #pragma once
 4 #include "standardhumanfactory.h"
 5 #include "IHumanFactory.h"
 6 template<class T>
 7 class CMaleHumanFactory :
 8     public CStandardHumanFactory<T>
 9 {
10 public:
11     CMaleHumanFactory(void);
12     ~CMaleHumanFactory(void);
13     IHuman * CreateYellowHuman();
14     IHuman * CreateWhiteHuman();
15     IHuman * CreateBlackHuman();
16 };
17 
18 //MaleHumanFactory.cpp
19 
20 #include "StdAfx.h"
21 #include "MaleHumanFactory.h"
22 template<class T>
23 CMaleHumanFactory<T>::CMaleHumanFactory(void)
24 {
25 }
26 template<class T>
27 CMaleHumanFactory<T>::~CMaleHumanFactory(void)
28 {
29 }
30 template<class T>
31 IHuman * CMaleHumanFactory<T>::CreateYellowHuman()
32 {
33     return CreateHuman();
34 }
35 template<class T>
36 IHuman * CMaleHumanFactory<T>::CreateWhiteHuman()
37 {
38     return CreateHuman();
39 }
40 template<class T>
41 IHuman * CMaleHumanFactory<T>::CreateBlackHuman()
42 {
43     return CreateHuman();
44 }

 1 //FemaleHumanFactory.h
 2 
 3 #pragma once
 4 #include "standardhumanfactory.h"
 5 template<class T>
 6 class CFemaleHumanFactory :
 7     public CStandardHumanFactory<T>
 8 {
 9 public:
10     CFemaleHumanFactory(void)
11     {
12     }
13     ~CFemaleHumanFactory(void)
14     {
15     }
16     IHuman * CreateYellowHuman()
17     {
18         return CreateHuman();
19     }
20     IHuman * CreateWhiteHuman()
21     {
22         return CreateHuman();
23     }
24     IHuman * CreateBlackHuman()
25     {
26         return CreateHuman();
27     }
28 };

 1 //AbstractFactory.cpp
 2 #include "stdafx.h"
 3 #include "IHuman.h"
 4 #include "IHumanFactory.h"
 5 #include "FemaleHumanFactory.h"
 6 #include "MaleHumanFactory.h"
 7 #include "MaleHumanFactory.cpp"
 8 #include "YellowFemaleHuman.h"
 9 #include "YellowMaleHuman.h"
10 #include "WhiteFemaleHuman.h"
11 #include "WhiteMaleHuman.h"
12 #include "BlackFemaleHuman.h"
13 #include "BlackMaleHuman.h"
14 void DoIt()
15 {
16     IHumanFactory *pFemaleHumanFactory = new CFemaleHumanFactory<CYellowFemaleHuman>();
17     IHuman *pYellowFemaleHuman = pFemaleHumanFactory->CreateYellowHuman();
18     pYellowFemaleHuman->Cry();
19     pYellowFemaleHuman->Laugh();
20     pYellowFemaleHuman->Talk();
21     pYellowFemaleHuman->Sex();
22     delete pYellowFemaleHuman;
23     delete pFemaleHumanFactory;
24 
25     IHumanFactory *pMaleHumanFactory = new CMaleHumanFactory<CYellowMaleHuman>();
26     IHuman *pYellowMaleHuman = pMaleHumanFactory->CreateYellowHuman();
27     pYellowMaleHuman->Cry();
28     pYellowMaleHuman->Laugh();
29     pYellowMaleHuman->Talk();
30     pYellowMaleHuman->Sex();
31     delete pYellowMaleHuman;
32     delete pMaleHumanFactory;
33 }
34 int _tmain(int argc, _TCHAR* argv[])
35 {
36     DoIt();
37     _CrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF | _CRTDBG_ALLOC_MEM_DF);
38     _CrtDumpMemoryLeaks();
39     return 0;
40 }

以上类图是本例子中所用到的类的相关图，有助于理解程序实现。抽象工厂属于创建型模式。主要用于生产一系列产品，每一个工厂也可以由单件来实现。这里使用模板方式来传递参数，使代码更简洁，但Java或.Net里面的反射方式，在C++还是不能真正实现。

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原文地址：https://www.cnblogs.com/labi/p/3595462.html