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)