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Commit 7ad5e8f

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中介者模式
中介者模式
1 parent 28d9081 commit 7ad5e8f

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6 files changed

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6 files changed

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package com.java.design.mediator;
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public class Colleague {
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protected String name;
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protected Mediator mediator;
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public Colleague(String name, Mediator mediator) {
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this.mediator = mediator;
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this.name = name;
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}
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}
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package com.java.design.mediator;
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public class ColleagueA extends Colleague {
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public ColleagueA(String name, Mediator mediator) {
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super(name, mediator);
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}
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public void getMessage(String message) {
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System.out.println(name + "收到消息:" + message);
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}
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// 与中介者通讯
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public void contact(String message) {
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mediator.contact(message, this);
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}
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}
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package com.java.design.mediator;
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public class ColleagueB extends Colleague {
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public ColleagueB(String name, Mediator mediator) {
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super(name, mediator);
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}
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public void getMessage(String message) {
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System.out.println(name + "收到消息:" + message);
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}
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// 与中介者通讯
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public void contact(String message) {
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mediator.contact(message, this);
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}
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}
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package com.java.design.mediator;
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/**
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* 定义具体中介者ConcreteMediator,具体中介者通过协调各同事对象实现协作行为,了解并维护它的各个同事。
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*
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* @author Administrator
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*
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*/
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public class ConcreteMediator extends Mediator {
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ColleagueA colleagueA;
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ColleagueB colleagueB;
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public ColleagueA getColleagueA() {
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return colleagueA;
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}
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public void setColleagueA(ColleagueA colleagueA) {
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this.colleagueA = colleagueA;
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}
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public ColleagueB getColleagueB() {
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return colleagueB;
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}
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public void setColleagueB(ColleagueB colleagueB) {
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this.colleagueB = colleagueB;
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}
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@Override
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public void contact(String message, Colleague colleague) {
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if (colleague == colleagueA) {
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// 制定规则 : 如果是A 则发送给 B
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colleagueB.getMessage(message);
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} else if (colleague == colleagueB) {
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// 如果是B 则发送给A
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colleagueA.getMessage(message);
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}
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}
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}
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package com.java.design.mediator;
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/**
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* 定义抽象 Mediator 中介者 ,可以与其他同时进行联络
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*
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* @author Administrator
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*
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*/
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public abstract class Mediator {
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public abstract void contact(String message, Colleague colleague);
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}
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package com.java.design.mediator;
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/**
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* 中介者模式 -----> 用一个中介对象来封装一系列的对象交互。中介者使各对象不需要显式地相互引用,从而使其耦合松散,而且可以独立地改变它们之间的交互。
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*
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* @author Administrator
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*
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*/
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public class MediatorPattern {
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public static void main(String[] args) {
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ConcreteMediator mediator = new ConcreteMediator();
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ColleagueA colleagueA = new ColleagueA("A", mediator);
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ColleagueB colleagueB = new ColleagueB("B", mediator);
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mediator.setColleagueA(colleagueA);
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mediator.setColleagueB(colleagueB);
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colleagueA.contact("B 啊 我在找你啊 ...");
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colleagueB.contact("A 啊 我在找你啊 ...");
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}
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}

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