C#设计模式之Facade外观模式解决天河城购物问题示例

2020-01-24 00:28:11

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本文实例讲述了C#设计模式之Facade外观模式解决天河城购物问题。分享给大家供大家参考，具体如下：

一、理论定义

外观模式把分散的子系统，集合成一个系统，提供一站式服务。

二、应用举例

需求描述：聂小倩和宁采臣是一对小富则安的聊斋夫妻。住在比较偏远的小乡村。
今天，两人初次来到大城市广州，听说天河城提供一站式服务，不像小城市那样，买个东西得东奔西跑。
在一个地方，就可以买到自己想要的衣服，电脑，鞋子，Iphone，还可以看大片，
吃冰淇淋，吃真功夫，买化妆品，珠宝首饰。天河城，果然是一宝地啊。
Ok，边走边看。

三、具体编码

1.阿迪达斯

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// 阿迪达斯  /// </summary>  public class Adidas  {    public void Serivce(string something) {      Console.WriteLine("在阿迪达斯购买了： "+something);    }  }}

2.飞扬影城

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// 飞扬影城  /// </summary>  public class FeiYangMovie  {    public void Serivce(string something)    {      Console.WriteLine("在飞扬影城看了一部电影： " + something);    }  }}

3.国美电器

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// 国美电器  /// </summary>  public class GoMe  {    public void Serivce(string something)    {      Console.WriteLine("在国美电器 买了： " + something);    }  }}

4.哈根达斯

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// 哈根达斯  /// </summary>  public class HaagenDaz  {    public void Serivce(string something)    {      Console.WriteLine("在哈根达斯 买了： " + something);    }  }}

5.真功夫

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// 真功夫  /// </summary>  public class KungFu  {    public void Serivce(string something)    {      Console.WriteLine("在真功夫 吃了： " + something);    }  }}

6.六福珠宝

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// 六福珠宝  /// </summary>  public class LukFook  {    public void Serivce(string something)    {      Console.WriteLine("在六福珠宝 买了： " + something);    }  }}

7.耐克

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// 耐克  /// </summary>  public class NIKE  {    public void Serivce(string something)    {      Console.WriteLine("在耐克店 买了： " + something);    }  }}

8.ONLY

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// ONLY时装  /// </summary>  public class ONLY  {    public void Serivce(string something)    {      Console.WriteLine("在ONLY时装 买了： " + something);    }  }}

9.苏宁电器

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// 苏宁电器  /// </summary>  public class Suning  {    public void Serivce(string something)    {      Console.WriteLine("在苏宁电器 买了： " + something);    }  }}

10.Veromoda国际时装品牌

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// Veromoda国际时装品牌  /// </summary>  public class Veromoda  {    public void Serivce(string something)    {      Console.WriteLine(something);    }  }}

11.消费者

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// 消费店子  /// </summary>  public enum ShopOption  {    Adidas = 1, DKNY = 2, GoMe = 3,    NIKE = 4, Suning = 5, Veromoda = 6,    FeiYangMovie = 7, HaagenDaz = 8, LukFook = 9, KungFu = 10  }  /// <summary>  /// 消费单  /// </summary>  public class Bill {    /// <summary>    /// 要去的消费店    /// </summary>    public ShopOption Item { get; set; }    /// <summary>    /// 去这个店要买啥    /// </summary>    public string Something { get; set; }  }  public class Consumer  {    /// <summary>    /// 消费单    /// </summary>    public IList<Bill> Items { get; set; }    /// <summary>    /// 姓名    /// </summary>    public string Name { get; set; }  }}

12.天河城---一站式服务

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Reflection;namespace Com.Design.Gof.Facade{  /// <summary>  /// 天河城  /// </summary>  public class TeeMall  {    private static readonly Assembly assembly = Assembly.LoadFile(AppDomain.CurrentDomain.BaseDirectory + @"/Com.Design.Gof.dll");    /// <summary>    /// 一站式服务    /// </summary>    /// <param name="consumer"></param>    public void OfferService(Consumer consumer) {      Console.WriteLine("我是： " + consumer.Name+",不差钱，今天来天河城玩： ");      Console.WriteLine("----------------------------------------------");      foreach (Bill item in consumer.Items)      {        object obj= assembly.CreateInstance("Com.Design.Gof.Facade." + item.Item);        MethodInfo info = obj.GetType().GetMethod("Serivce");        info.Invoke(obj, new object[] { item.Something });      }      Console.WriteLine();    }  }}

13.主函数调用

using System;using System.Collections.Generic;using System.Linq;using System.Text;using Com.Design.Gof.Facade;namespace Com.Design.Gof.Test{  class Program  {    static void Main(string[] args)    {      //天河城购物中心      TeeMall TeeMall = new TeeMall();      //消费者 1      Consumer consumer = new Consumer      {        Name="聂小倩",        //消费单        Items = new List<Bill> {         new Bill{ Item=ShopOption.Adidas, Something="运动服"},         new Bill{ Item=ShopOption.GoMe, Something="苹果IPhone智能手机"},         new Bill{ Item=ShopOption.FeiYangMovie, Something="<冰河世纪 4>"},         new Bill{ Item=ShopOption.KungFu, Something="香菇炖鸡"},          new Bill{ Item=ShopOption.LukFook, Something="金项链"},        }      };      TeeMall.OfferService(consumer);      //消费者 2      consumer = new Consumer      {        Name = "宁采臣",        //消费单        Items = new List<Bill> {         new Bill{ Item=ShopOption.FeiYangMovie, Something="《太空一号》"},         new Bill{ Item=ShopOption.Veromoda, Something="然后去了Veromoda时装，买了一套服装"},         new Bill{ Item=ShopOption.HaagenDaz, Something="买了一雪糕"},         new Bill{ Item=ShopOption.Suning, Something="在苏宁看买平板电脑"},        }      };      TeeMall.OfferService(consumer);      Console.ReadKey();    }  }}

14.运行结果