设计模式系列：构建者模式

 

using System; using System.Collections.Generic; using System.Linq; using System.Text; ///在电脑组装机总有这样的经历，我们到了店里，先会有一个销售人员来询问你希望装的机器是怎么样的 ///的配置，他会给你一些建议，最终会形成一张装机单。和客户确定好装机配置以后，他会把这张单子交给 ///提货的人，由他来准备这些配件，准备完成后交给装机技术人员。技术人员会吧这些配件装成一个整机交给 ///客户 ///不管是什么电脑，它总是有CPU，内存、主板、硬盘以及显卡等部件构成的，并且装机的过程过程总是固定的： ///1、把主板固定在机箱中 ///2、把CPU安装在主板中 ///3、把内存安装到主板上 ///4、把硬盘连接到主板上 ///5、把显卡安装到主板上 ///但是，每台兼容机的部件都各不相同的，有些配置稍高一点。有些配置低一点。这是变化点。对于整机技术人员 ///来说。他不需要考虑这些配件从哪里来的，他只需要把他们组装在一起了。这是稳定的装机流程。要把这种变化的配件和 ///稳定的流程进行分离就需要引入Build模式 namespace Builder_Mo_Shi {     /// <summary>    /// 电脑城。这里是电脑工厂（指导者）     /// </summary>     class ComputerFactory     {         public void BuidComputer(ComputerBuilder cb)         {             Console.WriteLine();             Console.WriteLine(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>start building"+cb.Name);             cb.SetupCpu();             cb.SetupHarddisk();             cb.SetupMainboard();             cb.SetupMemory();             cb.SetupVideocard();             Console.ReadLine();         }           }    //电脑构成抽象类     abstract class ComputerBuilder     {         private string name;         public string Name         {             get { return name; }             set { name = value; }         }         private Computer computer;         public Computer Computer         {             get { return computer; }             set { computer = value; }         }         public ComputerBuilder()         {             computer = new Computer();         }         public abstract void SetupMainboard();         public abstract void SetupCpu();         public abstract void SetupMemory();         public abstract void SetupHarddisk();         public abstract void SetupVideocard();     }     //办公室台式机的组装     class officComputerBuilder : ComputerBuilder     {         public officComputerBuilder()         {             Name = "OfficeComputer";         }         public override void SetupMainboard()         {             Computer.MainBoard1 = "主板，芯片组要求高档点";         }         public override void SetupCpu()         {             Computer.Cpu1 = "Intel  英特尔赛扬 D 336";         }         public override void SetupHarddisk()         {             Computer.Harddisk = "Hitachi日立SATAII接口台式机硬盘(80G/7200转/8M)盒";         }         public override void SetupMemory()         {             Computer.Memory1 = "Patriot博帝DDR2 667 512MB 台式机内存";         }         public override void SetupVideocard()         {             Computer.Videocard = "主板集成";         }     }    //游戏机的组装     class GameComputerBuilder : ComputerBuilder     {         public GameComputerBuilder()         {             Name = "GameComputer";         }         public override void SetupMainboard()         {             Computer.MainBoard1 = "主板，芯片组要求高档点";         }         public override void SetupCpu()         {             Computer.Cpu1 = "游戏机专用CPU";         }         public override void SetupHarddisk()         {             Computer.Harddisk = "游戏机专用硬盘";         }         public override void SetupMemory()         {             Computer.Memory1 = "Patriot博帝DDR2 667 8T 台式机内存";         }         public override void SetupVideocard()         {             Computer.Videocard = "游戏机主板集成";         }     }     //电脑实体类    public class Computer     {         private string videocard;         public string Videocard         {             get { return videocard; }             set { videocard = value; }         }         private string Cpu;         public string Cpu1         {             get { return Cpu; }             set { Cpu = value; }         }         private string MainBoard;         public string MainBoard1         {             get { return MainBoard; }             set { MainBoard = value; }         }         private string Memory;         public string Memory1         {             get { return Memory; }             set { Memory = value; }         }         private string harddisk;         public string Harddisk         {             get { return harddisk; }             set { harddisk = value; }         }         public void ShowSystemInfo()         {             Console.WriteLine("++++++++++++++++++++++++++++++SystemInfo+++++++++++++++++++++++++++");             Console.WriteLine("CPU:" + Cpu);             Console.WriteLine("MainBoard" + MainBoard);             Console.WriteLine("HardDisk:" + harddisk);         }     } } 下面是我们调用该函数的主函数： using System; using System.Collections.Generic; using System.Linq; using System.Text; using Builder_Mo_Shi; using System.Reflection; namespace Builder_Mo_Shi {     class Program     {         static void Main(string[] args)         {             ComputerFactory factory = new ComputerFactory();//找到电脑商城（指导者）             ComputerBuilder offic = new officComputerBuilder();//找到指导人员，选择电脑配置型号             factory.BuidComputer(offic);//找技术员工配置             offic.Computer.ShowSystemInfo();//取走电脑             Console.ReadLine();                     }     } }

 

 

 

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