Java经典设计模式之责任链模式原理与用法详解

public abstract class RoomRateHandler {protected RoomRateHandler mHandler;//直接由子类继承，用于传递请求public void setPriceHandler(RoomRateHandler mHandler){this.mHandler=mHandler;}//处理具体问题:处理价格请求public abstract void handlePriceRequest(float discount);public static RoomRateHandler cretateHandler(){RoomRateHandler salesMan=new SalesMan();RoomRateHandler salesManager=new SalesManager();RoomRateHandler saleDirector=new SalesDirector();RoomRateHandler topManager=new TopManager();salesMan.setPriceHandler(salesManager);salesManager.setPriceHandler(saleDirector);saleDirector.setPriceHandler(topManager);return salesMan;}}