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文章目录

• 系列文章目录
• 前言
• 一、中介者模式基本介绍
• 二、应用实例-智能家庭管理
• • 完整代码
  • 抽象中介者 Mediator
  • 具体中介者 ConcreteMediator
  • 抽象同事类 Colleague
  • 具体同事类
  • • 闹钟 Alarm
    • 咖啡机 CoffeeMachine
    • TV
    • 窗帘 Curtains
  • 测试 Clint
• 三、中介者模式的注意事项和细节

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前言

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提示：以下是本篇文章正文内容，下面案例可供参考

一、中介者模式基本介绍

二、应用实例-智能家庭管理

完整代码

抽象中介者 Mediator

package tanchishell.SJMS.smarthouse;//抽象中介者public abstract class Mediator {//将给中介者对象，加入到集合中public abstract void Register(String colleagueName, Colleague colleague);//接收消息, 具体的同事对象发出public abstract void GetMessage(int stateChange, String colleagueName);public abstract void SendMessage();}

具体中介者 ConcreteMediator

package tanchishell.SJMS.smarthouse;import java.util.HashMap;//具体的中介者类public class ConcreteMediator extends Mediator {//集合，放入所有的同事对象private HashMap<String, Colleague> colleagueMap;private HashMap<String, String> interMap;public ConcreteMediator() {colleagueMap = new HashMap<String, Colleague>();interMap = new HashMap<String, String>();}@Overridepublic void Register(String colleagueName, Colleague colleague) {colleagueMap.put(colleagueName, colleague);if (colleague instanceof Alarm) {interMap.put("Alarm", colleagueName);} else if (colleague instanceof CoffeeMachine) {interMap.put("CoffeeMachine", colleagueName);} else if (colleague instanceof TV) {interMap.put("TV", colleagueName);} else if (colleague instanceof Curtains) {interMap.put("Curtains", colleagueName);}}//具体中介者的核心方法//1. 根据得到消息，完成对应任务//2. 中介者在这个方法，协调各个具体的同事对象，完成任务@Overridepublic void GetMessage(int stateChange, String colleagueName) {//处理闹钟发出的消息if (colleagueMap.get(colleagueName) instanceof Alarm) {if (stateChange == 0) {((CoffeeMachine) (colleagueMap.get(interMap.get("CoffeeMachine")))).StartCoffee();((TV) (colleagueMap.get(interMap.get("TV")))).StartTv();} else if (stateChange == 1) {((TV) (colleagueMap.get(interMap.get("TV")))).StopTv();}} else if (colleagueMap.get(colleagueName) instanceof CoffeeMachine) {((Curtains) (colleagueMap.get(interMap.get("Curtains")))).UpCurtains();} else if (colleagueMap.get(colleagueName) instanceof TV) {//如果 TV 发现消息} else if (colleagueMap.get(colleagueName) instanceof Curtains) {//如果是以窗帘发出的消息，这里处理... }}}@Overridepublic void SendMessage() {}}

抽象同事类 Colleague

package tanchishell.SJMS.smarthouse;//同事抽象类public abstract class Colleague {private Mediator mediator;public String name;public Colleague(Mediator mediator, String name) {this.mediator = mediator;this.name = name;}public Mediator GetMediator() {return this.mediator;}public abstract void SendMessage(int stateChange);}

具体同事类

闹钟 Alarm

package tanchishell.SJMS.smarthouse;//具体的同事类 闹钟public class Alarm extends Colleague {//构造器public Alarm(Mediator mediator, String name){super(mediator, name);//在创建 Alarm 同事对象时，将自己放入到 ConcreteMediator 对象中[集合]mediator.Register(name, this);}public void SendAlarm(int stateChange) {SendMessage(stateChange);}@Overridepublic void SendMessage(int stateChange) {//调用的中介者对象的 getMessagethis.GetMediator().GetMessage(stateChange, this.name);}}

咖啡机 CoffeeMachine

package tanchishell.SJMS.smarthouse;//具体的同事类 咖啡机public class CoffeeMachine extends Colleague{public CoffeeMachine(Mediator mediator, String name) {super(mediator, name);mediator.Register(name, this);}@Overridepublic void SendMessage(int stateChange) {this.GetMediator().GetMessage(stateChange, this.name);}public void StartCoffee() {System.out.println("咖啡机开始工作");}public void FinishCoffee() {System.out.println("After 5 minutes!");System.out.println("Coffee is ok!");SendMessage(0);}}

TV

package tanchishell.SJMS.smarthouse;public class TV extends Colleague {public TV(Mediator mediator, String name) {super(mediator, name);// TODO Auto-generated constructor stubmediator.Register(name, this);}@Overridepublic void SendMessage(int stateChange) {this.GetMediator().GetMessage(stateChange, this.name);}public void StartTv() {System.out.println("It's time to 打开电视机!");}public void StopTv() {System.out.println("StopTv!");}}

窗帘 Curtains

package tanchishell.SJMS.smarthouse;public class Curtains extends Colleague {public Curtains(Mediator mediator, String name) {super(mediator, name);mediator.Register(name, this);}@Overridepublic void SendMessage(int stateChange) {this.GetMediator().GetMessage(stateChange, this.name);}public void UpCurtains() {System.out.println("I am holding 生气（升起）窗帘!");}}

测试 Clint

package tanchishell.SJMS.smarthouse;public class ClientTest {public static void main(String[] args) {//创建一个中介者对象Mediator mediator = new ConcreteMediator();//创建 Alarm 并且加入到 ConcreteMediator 对象的 HashMapAlarm alarm = new Alarm(mediator, "alarm");//创建了 CoffeeMachine 对象，并 且加入到 ConcreteMediator 对象的 HashMapCoffeeMachine coffeeMachine = new CoffeeMachine(mediator, "coffeeMachine");//创建 Curtains , 并 且加入到 ConcreteMediator 对象的 HashMapCurtains curtains = new Curtains(mediator, "curtains");TV tV = new TV(mediator, "TV");//让闹钟发出消息alarm.SendAlarm(0);// coffeeMachine.FinishCoffee();// alarm.SendAlarm(1);}}输出咖啡机开始工作It's time to 打开电视机!After 5 minutes!Coffee is ok!I am holding 生气（升起）窗帘!StopTv!

三、中介者模式的注意事项和细节