10000 外观模式 · Folgerjun/DesignPatterns-Java@f873122 · GitHub
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外观模式
外观模式
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‎java-des/src/com/java/design/facade/Facade.java

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package com.java.design.facade;
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public class Facade {
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ServiceA serviceA;
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ServiceB serviceB;
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ServiceC serviceC;
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public Facade() {
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serviceA = new ServiceAImpl();
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serviceB = new ServiceBImpl();
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serviceC = new ServiceCImpl();
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}
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public void methodA() {
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// 重组
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serviceA.methodA();
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serviceB.methodB();
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}
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public void methodB() {
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// 重组
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serviceB.methodB();
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serviceC.methodC();
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}
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public void methodC() {
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// 重组
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serviceC.methodC();
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serviceA.methodA();
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}
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}

‎java-des/src/com/java/design/facade/FacadePattern.java

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package com.java.design.facade;
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/**
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* 外观模式 ----> 是一种使用频率非常高的结构型设计模式，它通过引入一个外观角色来简化客户端与子系统之间的交互，为复杂的子系统调用提供一个统一的入口，
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* 降低子系统与客户端的耦合度，且客户端调用非常方便。
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*
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* @author Administrator
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*
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*/
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public class FacadePattern {
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public static void main(String[] args) {
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// 不根据外观调用
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ServiceA serviceA = new ServiceAImpl();
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ServiceB serviceB = new ServiceBImpl();
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ServiceC serviceC = new ServiceCImpl();
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serviceA.methodA();
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serviceB.methodB();
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serviceC.methodC();
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System.out.println("----------------");
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// 利用外观调用
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Facade facade = new Facade();
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facade.methodA();
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facade.methodB();
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facade.methodC();
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}
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}

‎java-des/src/com/java/design/facade/ServiceA.java

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package com.java.design.facade;
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public interface ServiceA {
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void methodA();
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}

‎java-des/src/com/java/design/facade/ServiceAImpl.java

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package com.java.design.facade;
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public class ServiceAImpl implements ServiceA {
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@Override
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public void methodA() {
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System.out.println("This is Method A ...");
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}
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}

‎java-des/src/com/java/design/facade/ServiceB.java

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package com.java.design.facade;
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public interface ServiceB {
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void methodB();
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}

‎java-des/src/com/java/design/facade/ServiceBImpl.java

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package com.java.design.facade;
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public class ServiceBImpl implements ServiceB {
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@Override
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public void methodB() {
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System.out.println("This is Method B ...");
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}
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}

‎java-des/src/com/java/design/facade/ServiceC.java

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package com.java.design.facade;
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public interface ServiceC {
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void methodC();
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}

‎java-des/src/com/java/design/facade/ServiceCImpl.java

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package com.java.design.facade;
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public class ServiceCImpl implements ServiceC {
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@Override
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public void methodC() {
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System.out.println("This is Method C ...");
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}
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}

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