策略模式

2020-12-25 09:12:54   7  举报

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策略模式

策略模式uml实例

作者其他创作

大纲/内容

//策略模式 public class CashContext -->Context { CashSuper cashSuper = null; public CashContext(string type) { switch (type) { case \"正常收费\": cashSuper = new CashNormal(); break; case \"满300返10\": cashSuper = new CashReturn(\"300\

/// <summary> /// 现金收取抽象类 /// </summary> public abstract class CashSuper --->Strategy { public abstract double acceptCash(double money); }

-Strategy

ConcreteStrategyA

+Algorithmlnterface（）

Context

+Contextlnterface（）

ConcreteStrategyC

Context上下文，用一个ConcreteStrategy来配置，维护一个对Strategy对象的引用

/// <summary> /// 打折收费子类 /// </summary> public class CashRebate : CashSuper-->ConcreteStrategyB { //打折折扣 private double moneyRebate = 1d; public CashRebate(string moneyRebate) { this.moneyRebate = double.Parse(moneyRebate); } public override double acceptCash(double money) { return money * moneyRebate; } }

策略类，定义所有支持的算法的公共接口

具体策略类，封装了具体的算法活行为，继承于Strategy

Strategy

/// <summary> /// 正常收费子类 /// </summary> public class CashNormal : CashSuper-->ConcreteStrategyA { public override double acceptCash(double money) { return money; } }

//策略模式CashContext context = new CashContext(\"满300返10\");double result = context.GetResult(800);Console.WriteLine(result);

ConcreteStrategyB