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C#设计模式系列 9 ----Facade外观模式之--天河城购物

2012-08-13 15:23 726 查看
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)
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