设计模式-建造者模式（三）

创建胖子和瘦子实例

1.创建人的抽象类

public abstract class PersonBuilder
    {
        public abstract void BuildHead();

        public abstract void BuildBody();

        public abstract void BuildLeftArm();

        public abstract void BuildRightArm();

        public abstract void BuildLeftLeg();

        public abstract void BuildRightLeg();
             
    }

2.封装创建人的类

public  class PersonDirector
    {
        private PersonBuilder _personbuilder = null;
        public PersonDirector() { }

        public PersonDirector(PersonBuilder personbuilder)
        {
            if (_personbuilder == null)
                _personbuilder = personbuilder;
        }
        public void CreatePerson()
        {
            _personbuilder.BuildHead();
            _personbuilder.BuildBody();
            _personbuilder.BuildLeftArm();
            _personbuilder.BuildRightArm();
            _personbuilder.BuildLeftLeg();
            _personbuilder.BuildRightLeg();
        }
    }

3.创建瘦子

public class ThinPerson : PersonBuilder
    {
        public override void BuildBody()
        {
            Console.WriteLine("创建瘦身体");
        }

        public override void BuildHead()
        {
            Console.WriteLine("创建瘦脑袋");
        }

        public override void BuildLeftArm()
        {
            Console.WriteLine("创建瘦左胳膊");
        }

        public override void BuildLeftLeg()
        {
            Console.WriteLine("创建瘦左腿");
        }

        public override void BuildRightArm()
        {
            Console.WriteLine("创建瘦右胳膊");
        }

        public override void BuildRightLeg()
        {
            Console.WriteLine("创建瘦右腿");
        }
    }

4.创建胖子

 public class FatPerson : PersonBuilder
    {
        public override void BuildBody()
        {
            Console.WriteLine("创建胖身体");
        }

        public override void BuildHead()
        {
            Console.WriteLine("创建胖脑袋");
        }

        public override void BuildLeftArm()
        {
            Console.WriteLine("创建胖左胳膊");
        }

        public override void BuildLeftLeg()
        {
            Console.WriteLine("创建胖左腿");
        }

        public override void BuildRightArm()
        {
            Console.WriteLine("创建胖右胳膊");
        }

        public override void BuildRightLeg()
        {
            Console.WriteLine("创建胖右腿");
        }
    }

5.调用实例

            PersonBuilder pbt = new ThinPerson();
            PersonDirector pd = new PersonDirector(pbt);
            pd.CreatePerson();
            Console.WriteLine("-----------------------");
            PersonBuilder pbf = new FatPerson();
            PersonDirector pd1 = new PersonDirector(pbf);
            pd1.CreatePerson();