feat:上传中介者模式例子

README.md

@@ -21,7 +21,7 @@
 
 8.桥接模式- 已上传
 
-9.中介者模式 - 整理中
+9.中介者模式 - 已上传
 
 10.责任链模式 - 整理中
 

src/main/com/mxy/design/mediator/AbstractMediator.java

@@ -0,0 +1,6 @@
+package com.mxy.design.mediator;
+
+public abstract class AbstractMediator  {
+
+    public abstract void sendMessage(Class clazz);
+}

src/main/com/mxy/design/mediator/ITaobaosMarket.java

@@ -0,0 +1,10 @@
+package com.mxy.design.mediator;
+
+/**
+ * 商城
+ */
+public interface ITaobaosMarket {
+
+    void contact();
+
+}

src/main/com/mxy/design/mediator/Mediator.java

@@ -0,0 +1,81 @@
+package com.mxy.design.mediator;
+
+public class Mediator extends AbstractMediator {
+
+    private TaobaoBuyer buyer;
+    private TaobaoLogistics logistics;
+    private TaobaosSller sller;
+
+    public TaobaoBuyer getBuyer() {
+        return buyer;
+    }
+
+    public void setBuyer(TaobaoBuyer buyer) {
+        this.buyer = buyer;
+    }
+
+    public TaobaoLogistics getLogistics() {
+        return logistics;
+    }
+
+    public void setLogistics(TaobaoLogistics logistics) {
+        this.logistics = logistics;
+    }
+
+    public TaobaosSller getSller() {
+        return sller;
+    }
+
+    public void setSller(TaobaosSller sller) {
+        this.sller = sller;
+    }
+
+    private Double payMoney;
+    private Double receiveMoney;
+    private String goodsName;
+
+    public Double getPayMoney() {
+        return payMoney;
+    }
+
+    public void setPayMoney(Double payMoney) {
+        this.payMoney = payMoney;
+    }
+
+    public Double getReceiveMoney() {
+        return receiveMoney;
+    }
+
+    public void setReceiveMoney(Double receiveMoney) {
+        this.receiveMoney = receiveMoney;
+    }
+
+    public String getGoodsName() {
+        return goodsName;
+    }
+
+    public void setGoodsName(String goodsName) {
+        this.goodsName = goodsName;
+    }
+    @Override
+    public void sendMessage(Class clazz) {
+        try {
+            Object currentObj = Class.forName(clazz.getName()).newInstance();
+            if (currentObj instanceof TaobaoLogistics) {
+                ((TaobaoLogistics) currentObj).receiveGoodsAndMoney(goodsName, receiveMoney);
+            } else if (currentObj instanceof TaobaosSller) {
+                sller.receiveMoney(receiveMoney);
+                sller.sendGoodsToLogistics(goodsName);
+                sller.payMoneyToLogistics(payMoney);
+            } else if (currentObj instanceof TaobaoBuyer) {
+                ((TaobaoBuyer) currentObj).payMoneyAndGoods(payMoney,goodsName);
+            }
+        } catch (InstantiationException e) {
+            e.printStackTrace();
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+    }
+}

src/main/com/mxy/design/mediator/TaobaoBuyer.java

@@ -0,0 +1,25 @@
+package com.mxy.design.mediator;
+
+public class TaobaoBuyer implements ITaobaosMarket {
+
+
+    public TaobaoBuyer() {
+    }
+
+    private Mediator mediator;
+
+    public TaobaoBuyer(Mediator mediator) {
+        this.mediator = mediator;
+    }
+
+    public void payMoneyAndGoods(Double number, String goodsName) {
+        System.out.println("买家支付"+number+"与商品"+goodsName+"给卖家");
+    }
+
+    @Override
+    public void contact() {
+        mediator.setPayMoney(100D);
+        mediator.setGoodsName("篮球");
+        mediator.sendMessage(TaobaoBuyer.class);
+    }
+}

src/main/com/mxy/design/mediator/TaobaoLogistics.java

@@ -0,0 +1,25 @@
+package com.mxy.design.mediator;
+
+public class TaobaoLogistics implements ITaobaosMarket {
+
+
+    public TaobaoLogistics() {
+    }
+
+    private Mediator mediator;
+
+    public TaobaoLogistics(Mediator mediator) {
+        this.mediator = mediator;
+    }
+
+    public void receiveGoodsAndMoney(String goodsName, Double number) {
+        System.out.println("快递小哥收到"+number+"与商品"+goodsName+"开始送货");
+    }
+
+    @Override
+    public void contact() {
+        mediator.setReceiveMoney(10D);
+        mediator.setGoodsName("篮球");
+        mediator.sendMessage(TaobaoLogistics.class);
+    }
+}

src/main/com/mxy/design/mediator/TaobaosSller.java

@@ -0,0 +1,34 @@
+package com.mxy.design.mediator;
+
+public class TaobaosSller implements ITaobaosMarket{
+
+
+    public TaobaosSller() {
+    }
+
+    private Mediator mediator;
+
+    public TaobaosSller(Mediator mediator) {
+        this.mediator = mediator;
+    }
+
+    public void receiveMoney(Double number) {
+        System.out.println("卖家收到买家支付的"+number+"元钱");
+    }
+
+    public void payMoneyToLogistics(Double number) {
+        System.out.println("卖家支付"+number+"给快递小哥");
+    }
+
+    public void sendGoodsToLogistics(String goodsName) {
+        System.out.println("卖家把商品"+goodsName+"给快递小哥");
+    }
+
+    @Override
+    public void contact() {
+        mediator.setReceiveMoney(100D);
+        mediator.setPayMoney(10D);
+        mediator.setGoodsName("篮球");
+        mediator.sendMessage(TaobaosSller.class);
+    }
+}

src/test/com/mxy/design/mediator/MediatorTest.java

@@ -0,0 +1,49 @@
+package com.mxy.design.mediator;
+
+import org.junit.Test;
+
+/**
+ * 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
+ *
+ * 优点：
+ * 同事对象之间的交互都被封装到中介者对象里面集中管理，集中了控制交互。当交互发生改变时，修改中介者对象。扩展中介者对象时，其他对象不需要做修改。
+ * 缺点：
+ * 过度集中化，这是中介者模式潜在的缺点。如果对象多了，交互复杂。全部集中到中介者对象中，会导致中介者对象十分臃肿，难以管理和维护
+ *
+ * 角色说明：
+ * 抽象中介者角色（AbstractMediator）：定义出同事对象到中介者对象的接口，其中主要方法是一个（或多个）事件方法。
+ *
+ * 具体中介者角色（ConcreteMediator）：实现抽象中介者中所声明的事件方法。具体中介者直销所有的具体同事类，并负责具体的协调各个同事对象的交互关系。
+ *
+ * 抽象同事类角色（AbstractColleague）：定义出红接着到同事对象的接口。同事对象只知道中介者，而不知道的同事对象。(核心)
+ *
+ * 具体同事类角色（ConcreteColleague）：所有的具体同事类均从抽象同事类继承而来。实现自己的业务，在需要与其他同事通信的时候，就与持有的中介者通信，中介者会负责与其他的同时交互。
+
+ */
+
+public class MediatorTest {
+
+    @Test
+    public void logicTest() {
+        Mediator mediator = new Mediator();
+        TaobaosSller sller = new TaobaosSller(mediator);
+        TaobaoLogistics logistics = new TaobaoLogistics(mediator);
+        TaobaoBuyer buyer = new TaobaoBuyer(mediator);
+
+        mediator.setBuyer(buyer);
+        mediator.setLogistics(logistics);
+        mediator.setSller(sller);
+
+        //同事之间不知道对方,至于中介沟通
+        buyer.contact();
+             System.out.println();
+        sller.contact();
+            System.out.println();
+        logistics.contact();
+
+
+
+    }
+
+
+}