抽象工厂模式

最新推荐文章于 2025-04-17 15:25:54 发布

转载最新推荐文章于 2025-04-17 15:25:54 发布 · 52 阅读

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原文链接：http://www.cnblogs.com/HelloCG/archive/2008/12/31/1366344.html

本文介绍了抽象工厂模式的概念及其应用场景，并通过两个C#示例详细展示了如何实现这一模式。第一个示例展示了一个简单的水果工厂，第二个示例则进一步扩展了产品范围，包括水果和衣物等不同类别。

1.抽象工厂模式：

提供一个接口，让该接口负责创建一系列相关或者相互依赖的对象，无需指定它们具体的类。

2.抽象工厂模式应用场景:

一系列相互依赖的对象的创建工作；同时，由于需求变化，往往存在更多系列的对象的创建工作。

3.举例

例1

AbstractFactory.cs
using System;
using System.Collections.Generic;
using System.Text;

namespace AbstractFactory
{
    public interface IFruit
    {
    }
    public class Orange : IFruit
    {
        public Orange()
        {
            Console.WriteLine("Orange is got.");
        }
    }
    public class Apple : IFruit
    {
        public Apple()
        {
            Console.WriteLine("Apple is got.");
        }
    }

    public class FruitFactory
    {
        public IFruit MakeFruit(string name)
        {
            switch (name)
            {
                case "Orange":
                    return new Orange();
                case "Apple":
                    return new Apple();
                default:
                    return null;
            }
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            string fruitName = Console.ReadLine();
            IFruit MyFruit;
            FruitFactory MyFruitFactory = new FruitFactory();
            MyFruit = MyFruitFactory.MakeFruit(fruitName);
        }
    }
}

例2

AbstractFactory_2.cs
using System;
using System.Collections.Generic;
using System.Text;

namespace AbstractFactory_2
{
    //interface
    public interface IProduct
    {
        string Hello();
    }
    public interface IFruit:IProduct
    {
    }
    public interface ICloth:IProduct
    {
    }

    //class
    public class Product : IProduct
    {
        public string Hello()
        {
            return "Hello!";
        }
    }
    public class Fruit : IFruit
    {
        public string Hello()
        {
            return "You like fruit.Fruit is very delicious.";
        }
    }
    public class Orange : Fruit
    {
        string price = "Orange price is $1.1";
        public  Orange()
        {
            Console.WriteLine(price);
        }
    }
    public class Apple : Fruit
    {
        string price = "Apple price is $2.1";
        public Apple()
        {
            Console.WriteLine(price);
        }
    }
    public class Cloth : ICloth
    {
        public string Hello()
        {
            return "You like cloth.Cloth is very beautiful.";
        }
    }
    public class Shoe : Cloth
    {
        string price = "Shoe price is $3.1";
        public Shoe()
        {
            Console.WriteLine(price);
        }
    }
    public class Trouse : Cloth
    {
        string price = "Trouse price is $4.1";
        public Trouse()
        {
            Console.WriteLine(price);
        }
    }

    //AbstractFactory
    public class ProductFactory
    {
        public IProduct MakeProduct(string name)
        {
            switch (name)
            {
                case "Orange":
                    return new Orange();
                case "Apple":
                    return new Apple();
                case "Shoe":
                    return new Shoe();
                case "Trouse":
                    return new Trouse();
                default:
                    return new Product();
            }
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            string s = Console.ReadLine();
            IProduct myProduct;
            ProductFactory myProductFactory = new ProductFactory();
            myProduct = myProductFactory.MakeProduct(s);
            Console.WriteLine(myProduct.Hello());
            Console.ReadLine();
        }
    }
}

转载于:https://www.cnblogs.com/HelloCG/archive/2008/12/31/1366344.html