C#设计模式系列 9 ----Facade外观模式之--天河城购物

   1.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。

   2.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。      

   3.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

15.总结

  天河城 TeeMall 理论上应该包括 所有 商场的引用,

  这里用反射 避免了这一动作。

  附件里面包括了程序源码。

  这里是附件下载(Download)

posted @ 2012-08-13 15:23  正定聚  阅读(1696)  评论(3编辑  收藏  举报