设计模式之简单工厂

一、定义简单工厂其实不是一个设计模式，反而比较像是一种编程习惯。

二、类图

三、示例

/// <summary>/// 披萨商店/// </summary>public class PizzaStore{public PizzaStore(){}public Pizza OrderPizza(string type){Pizza pizza;pizza = SimplePizzaFactory.CreatePizza(type);pizza.PRepare();pizza.Bake();pizza.Cut();pizza.Box();return pizza;}}/// <summary>/// 披萨工厂/// </summary>public static class SimplePizzaFactory{public static Pizza CreatePizza(string type){Pizza pizza = null;if (type.Equals("cheese")){pizza = new CheesePizza();}else if (type.Equals("pepperoni")){pizza = new Pepperonipizza();}return pizza;}}/// <summary>/// 抽象披萨/// </summary>public abstract class Pizza{public abstract void Prepare();public abstract void Bake();public abstract void Cut();public abstract void Box();}/// <summary>/// 芝士披萨/// </summary>public class CheesePizza:Pizza{public override void Prepare(){Console.WriteLine("准备芝士披萨");}public override void Bake(){Console.WriteLine("烘培芝士披萨");}public override void Cut(){Console.WriteLine("切芝士披萨");}public override void Box(){Console.WriteLine("打包芝士披萨");}}/// <summary>/// 意大利香肠披萨/// </summary>public class PepperoniPizza:Pizza{public override void Prepare(){Console.WriteLine("准备意大利香肠披萨");}public override void Bake(){Console.WriteLine("烘培意大利香肠披萨");}public override void Cut(){Console.WriteLine("切意大利香肠披萨");}public override void Box(){Console.WriteLine("打包意大利香肠披萨");}}static void Main(string[] args){PizzaStore pizzaStore = new PizzaStore();Pizza pizza = pizzaStore.OrderPizza("cheese");Console.ReadLine();}

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