建造者模式

女爷i 2021-09-16 23:52 336阅读 0赞

## 4.建造者模式 ##

![70][]

class Customer
        {
            static void Main(string[] args)
            {
                Director director = new Director();
                Builder b1 = new ConcreteBuilder1();
                Builder b2 = new ConcreteBuilder2();
    
                director.Construct(b1);// 老板叫员工去组装第一台电脑
       
                Computer computer1 = b1.GetComputer();// 组装完，组装人员搬来组装好的电脑
                computer1.Show();
               
                director.Construct(b2);// 老板叫员工去组装第二台电脑
                Computer computer2 = b2.GetComputer();
                computer2.Show();
    
                Console.Read();
            }
        }
        public class Director
        { 
            public void Construct(Builder builder)// 组装电脑
            {
                builder.BuildPartCPU();
                builder.BuildPartMainBoard();
            }
        }
    
        public class Computer// 电脑类
        {
            private IList<string> parts = new List<string>();
            public void Add(string part)
            {
                parts.Add(part);
            }
            public void Show()
            {
                Console.WriteLine("电脑开始在组装.......");
                foreach (string part in parts)
                {
                    Console.WriteLine("组件"+part+"已装好");
                }
    
                Console.WriteLine("电脑组装好了");
            }
        }
    
        public abstract class Builder// 抽象建造者
        {
            public abstract void BuildPartCPU();// 装CPU
            public abstract void BuildPartMainBoard();// 装主板       
            public abstract Computer GetComputer();// 获得组装好的电脑
        }
        public class ConcreteBuilder1 : Builder
        {
            Computer computer = new Computer();
            public override void BuildPartCPU()
            {
                computer.Add("CPU1");
            }
            public override void BuildPartMainBoard()
            {
                computer.Add("Main board1");
            }
            public override Computer GetComputer()
            {
                return computer;
            }
        }
        public class ConcreteBuilder2 : Builder
        {
            Computer computer = new Computer();
            public override void BuildPartCPU()
            {
                computer.Add("CPU2");
            }
            public override void BuildPartMainBoard()
            {
                computer.Add("Main board2");
            }
            public override Computer GetComputer()
            {
                return computer;
            }
        }

![70 1][]

[70]: /images/20210725/68565f32b8444338b68cc29f08719173.png
[70 1]: /images/20210725/56249d2dfe9a4f1c90879a6107a9feaa.png