设计模式——工厂方法 FactoryMethod

工厂接口

using Interface;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace FactoryMethod{    /// <summary>    /// 手机工厂接口    /// </summary>    public interface IBasePhoneFactory    {        BasePhone CreateBasePhone();    }}

手机基类

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace Interface{    public abstract class BasePhone    {        public abstract void Call();        public abstract void Text();    }}

三星手机

using Interface;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace FactoryMethod{    public class Galaxy : BasePhone    {        public Galaxy(string name)        { }        public override void Call()        {            Console.WriteLine("use {0} call", this.GetType().Name);        }        public override void Text()        {            Console.WriteLine("use {0} text", this.GetType().Name);        }    }}

三星手机工厂

using Interface;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace FactoryMethod{    public class GalaxyFactory : IBasePhoneFactory    {        public BasePhone CreateBasePhone()        {            return new Galaxy("FY");        }    }}

苹果手机

using Interface;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace FactoryMethod{    public class iPhone : BasePhone    {        public override void Call()        {            Console.WriteLine("use {0} call", this.GetType().Name);        }        public override void Text()        {            Console.WriteLine("use {0} text", this.GetType().Name);        }    }}

苹果手机工厂

using Interface;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace FactoryMethod{    public class iPhoneFactory : IBasePhoneFactory    {        public BasePhone CreateBasePhone()        {            return new iPhone();        }    }}

魅族手机

using Interface;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace FactoryMethod{    public class MX : BasePhone    {        public override void Call()        {            Console.WriteLine("use {0} call", this.GetType().Name);        }        public override void Text()        {            Console.WriteLine("use {0} text", this.GetType().Name);        }    }}

魅族手机工厂

using Interface;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace FactoryMethod{    public class MXFactory : IBasePhoneFactory    {        public BasePhone CreateBasePhone()        {            return new MX();        }    }}

上端调用

using FactoryMethod;using Interface;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ConsoleApplication1{    class Program    {        static void Main(string[] args)        {            BasePhone galaxy = new GalaxyFactory().CreateBasePhone();            BasePhone iPhone = new iPhoneFactory().CreateBasePhone();            BasePhone MX = new MXFactory().CreateBasePhone();        }    }}

上面可以看出，只要我们在增加一个手机类型，同时在增加一个该类型手机工厂，那么我们对业务就可以很好的扩展

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设计模式第6个原则——开闭原则。

开闭原则：对扩展开发，对修改封闭

在某种角度上来说工厂方法是最完美的设计模式，因为它完美的遵循了开闭原则

工厂方法使用起来太麻烦，要多很多类和工厂，感觉是类的大爆炸 ：（