建造者模式（Builder Pattern）

建造者模式（Builder Pattern）是将一个复杂对象的构建与它的表示分离，使得同样的构建过程可以创建不同的表示。建造者模式使得建造代码与表示代码的分离，可以使客户端不必知道产品内部组成的细节，从而降低了客户端与具体产品之间的耦合度。使用多个简单的对象一步一步构建成一个复杂的对象。属于创建型模式，它提供了一种创建对象的最佳方式。

using System;
using System.Text;
namespace ConsoleApplication
{//建造者抽象类，定义了建造者的能力public abstract class Builder{public abstract void WriteCode();       //写代码public abstract void WriteAnnotation(); //写注释public abstract void Compile();         //编译}/// <summary>/// 高级的程序员/// </summary>public class SeniorBuilder : Builder{private StringBuilder program = new StringBuilder();public override void WriteCode(){program.Append("架构代码-->");}public override void WriteAnnotation(){program.Append("写注释-->");}public override void Compile(){program.Append("编译-->");}public string GetContent(){return program.Append("代码编写完成").ToString();}}/// <summary>/// 初级的程序员/// </summary>public class JuniorBuilder : Builder{private StringBuilder program = new StringBuilder();public override void WriteCode(){program.Append("实现功能代码-->");}public override void WriteAnnotation(){program.Append("写注释-->");}public override void Compile(){program.Append("编译代码-->");}public string GetContent(){return program.Append("简单小程序写完").ToString();}}//监工类，制定具体的步骤public class Director{private Builder builder;public Director(Builder builder){this.builder = builder;}//编写程序的流程，public void Construct(){builder.WriteCode();      //先写代码builder.WriteAnnotation();//写注释builder.Compile();        //编译程序}}class Program{static void Main(string[] args){//资深的程序员1编写程序SeniorBuilder seniorBuilder = new SeniorBuilder();Director director1 = new Director(seniorBuilder);director1.Construct();string p1 = seniorBuilder.GetContent();Console.WriteLine(p1);//资历较浅的程序员2编写程序JuniorBuilder juniorBuilder = new JuniorBuilder();Director director2 = new Director(juniorBuilder);director2.Construct();string p2 = juniorBuilder.GetContent();Console.WriteLine(p2);Console.ReadKey();}}
}