【设计模式学习笔记】中介者模式

迷南。 2022-03-27 12:36 177阅读 0赞

> 中介者模式：用来降低多个对象和类之间的通信复杂性。这种模式提供了一个中介类，该类通常处理不同类之间的通信，并支持松耦合，使代码易于维护。中介者模式属于行为型模式。【菜鸟】

## 文章目录  ##

[1.1 交谈动作及对象][1.1]

[1.2 中介者长这模样][1.2]

[1.3 测试][1.3]

[1.4 结果][1.4]

[参考][Link 1]

从工厂模式开始我们工厂就一直在造车，今天终于，终于有人要买我们的车了！于是我们公司就开了和其他公司谈起来了。。。。

## 1.1 交谈动作及对象  ##

首先定义一个说话动作的抽象类。客户和我们公司都要说话啊。

package mediation;
    
    public abstract class Action {
        private String name;
    
        public String getName() {
            return name;
        }
    
        public Action(String name) {
            this.name = name;
        }
    
    	public void saySomething(String words, Action... action){
            Mediator.execute(this, words, action);
    	}
    }

我们公司及客户是这样，继承一下Action就好了

package mediation;
    
    public class CarCompany extends Action{
    
    	public CarCompany(String name) {
    		super(name);
    	}
    }

## 1.2 中介者长这模样 ##

package mediation;
    
    public class Mediator {
    
    	public static void execute(Action action, String words, Action... action2) {
    	    StringBuffer cusNames = new StringBuffer();
    	    for (Action act : action2){
    	        cusNames.append(act.getName()+" ");
            }
    	    String msg = "【"+action.getName() + "】 对【 "+cusNames.toString()+"】说："+words;
    	    System.out.println(msg);
    	}
    }

注意在抽象类中，我们的动作都经过中介者处理。

## 1.3 测试 ##

package mediation;
    
    public class Test {
    	public static void main(String[] args) {
    		Action com = new CarCompany("车厂");
    		Action cusA = new Customer("客户A");
    		Action cusB = new Customer("客户B");
    		com.saySomething("我们的车质量好。", cusA,cusB);
    		cusA.saySomething("好不好，跑一跑！", com);
            cusB.saySomething("我看这车行！", com);
            com.saySomething("88折卖你了，客户A不知道的。", cusB);
            cusB.saySomething("o了", com);
            cusA.saySomething("你们在说啥....(⊙_⊙)?", com,cusB);
    
        }
    }

##  1.4 结果 ##

![20181215214205624.png][]

## 参考 ##

【菜鸟教程】：[http://www.runoob.com/design-pattern/mediator-pattern.html][http_www.runoob.com_design-pattern_mediator-pattern.html]

本文原文地址：[https://blog.csdn.net/baidu\_30325009/article/details/85018875][https_blog.csdn.net_baidu_30325009_article_details_85018875]

[1.1]: https://blog.csdn.net/baidu_30325009/article/details/85018875#11__7
[1.2]: https://blog.csdn.net/baidu_30325009/article/details/85018875#12__42
[1.3]: https://blog.csdn.net/baidu_30325009/article/details/85018875#13__61
[1.4]: https://blog.csdn.net/baidu_30325009/article/details/85018875#14__81
[Link 1]: https://blog.csdn.net/baidu_30325009/article/details/85018875#_84
[20181215214205624.png]: /images/20220327/d02fecf75e86467aaef689557b7382fa.png
[http_www.runoob.com_design-pattern_mediator-pattern.html]: http://www.runoob.com/design-pattern/mediator-pattern.html
[https_blog.csdn.net_baidu_30325009_article_details_85018875]: https://blog.csdn.net/baidu_30325009/article/details/85018875