C#設計模式之Facade外觀模式解決天河城購物問題示例

2020-01-24 00:28:11

字體：大中小

來源：轉載

供稿：網友

本文實例講述了C#設計模式之Facade外觀模式解決天河城購物問題。分享給大家供大家參考，具體如下：

一、理論定義

外觀模式把分散的子系統，集合成一個系統，提供一站式服務。

二、應用舉例

需求描述：聶小倩和寧采臣是一對小富則安的聊齋夫妻。住在比較偏遠的小鄉村。
今天，兩人初次來到大城市廣州，聽說天河城提供一站式服務，不像小城市那樣，買個東西得東奔西跑。
在一個地方，就可以買到自己想要的衣服，電腦，鞋子，Iphone，還可以看大片，
吃冰淇淋，吃真功夫，買化妝品，珠寶首飾。天河城，果然是一寶地啊。
Ok，邊走邊看。

三、具體編碼

1.阿迪達斯

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// 阿迪達斯  /// </summary>  public class Adidas  {    public void Serivce(string something) {      Console.WriteLine("在阿迪達斯購買了： "+something);    }  }}

2.飛揚影城

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// 飛揚影城  /// </summary>  public class FeiYangMovie  {    public void Serivce(string something)    {      Console.WriteLine("在飛揚影城看了一部電影： " + something);    }  }}

3.國美電器

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// 國美電器  /// </summary>  public class GoMe  {    public void Serivce(string something)    {      Console.WriteLine("在國美電器 買了： " + something);    }  }}

4.哈根達斯

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

6.六福珠寶

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

8.ONLY

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

9.蘇寧電器

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// 蘇寧電器  /// </summary>  public class Suning  {    public void Serivce(string something)    {      Console.WriteLine("在蘇寧電器 買了： " + something);    }  }}

10.Veromoda國際時裝品牌

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// Veromoda國際時裝品牌  /// </summary>  public class Veromoda  {    public void Serivce(string something)    {      Console.WriteLine(something);    }  }}

11.消費者

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Com.Design.Gof.Facade{  /// <summary>  /// 消費店子  /// </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>  /// 消費單  /// </summary>  public class Bill {    /// <summary>    /// 要去的消費店    /// </summary>    public ShopOption Item { get; set; }    /// <summary>    /// 去這個店要買啥    /// </summary>    public string Something { get; set; }  }  public class Consumer  {    /// <summary>    /// 消費單    /// </summary>    public IList<Bill> Items { get; set; }    /// <summary>    /// 姓名    /// </summary>    public string Name { get; set; }  }}

12.天河城---一站式服務

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>    /// 一站式服務    /// </summary>    /// <param name="consumer"></param>    public void OfferService(Consumer consumer) {      Console.WriteLine("我是： " + consumer.Name+",不差錢，今天來天河城玩： ");      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.主函數調用

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)    {      //天河城購物中心      TeeMall TeeMall = new TeeMall();      //消費者 1      Consumer consumer = new Consumer      {        Name="聶小倩",        //消費單        Items = new List<Bill> {         new Bill{ Item=ShopOption.Adidas, Something="運動服"},         new Bill{ Item=ShopOption.GoMe, Something="蘋果IPhone智能手機"},         new Bill{ Item=ShopOption.FeiYangMovie, Something="<冰河世紀 4>"},         new Bill{ Item=ShopOption.KungFu, Something="香菇燉雞"},          new Bill{ Item=ShopOption.LukFook, Something="金項鏈"},        }      };      TeeMall.OfferService(consumer);      //消費者 2      consumer = new Consumer      {        Name = "寧采臣",        //消費單        Items = new List<Bill> {         new Bill{ Item=ShopOption.FeiYangMovie, Something="《太空一號》"},         new Bill{ Item=ShopOption.Veromoda, Something="然后去了Veromoda時裝，買了一套服裝"},         new Bill{ Item=ShopOption.HaagenDaz, Something="買了一雪糕"},         new Bill{ Item=ShopOption.Suning, Something="在蘇寧看買平板電腦"},        }      };      TeeMall.OfferService(consumer);      Console.ReadKey();    }  }}

14.運行結果