8000 命令模式 · Folgerjun/DesignPatterns-Java@10f2cb6 · GitHub
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命令模式
命令模式
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‎java-des/src/ 8000 com/java/design/command/AbstractAction.java

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package com.java.design.command;
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public interface AbstractAction {
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void excute();
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}

‎java-des/src/com/java/design/command/AbstractReceiver.java

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package com.java.design.command;
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public abstract class AbstractReceiver {
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abstract void cook();
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}

‎java-des/src/com/java/design/command/ActionA.java

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package com.java.design.command;
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public class ActionA implements AbstractAction {
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private AbstractReceiver abstractReceiver;
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public ActionA(AbstractReceiver abstractReceiver) {
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this.abstractReceiver = abstractReceiver;
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}
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@Override
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public void excute() {
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System.out.println("命令A发布 ...");
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this.abstractReceiver.cook();
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}
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}

‎java-des/src/com/java/design/command/ActionB.java

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package com.java.design.command;
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public class ActionB implements AbstractAction {
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private AbstractReceiver abstractReceiver;
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public ActionB(AbstractReceiver abstractReceiver) {
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this.abstractReceiver = abstractReceiver;
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}
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@Override
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public void excute() {
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System.out.println("命令B发布 ...");
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this.abstractReceiver.cook();
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}
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}

‎java-des/src/com/java/design/command/CommandPattern.java

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package com.java.design.command;
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/**
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* 命令模式 ----->
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* 显而易见，是将命令和实际操作相隔离，解耦合，客户端只发出命令，具体的操作不需要关心，只需要完成任务。举个很简单的例子，用户点菜，然后厨师做菜，
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* 根据点菜的口味不同厨师做不同的菜
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*
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* @author Administrator
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*
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*/
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public class CommandPattern {
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public static void main(String[] args) {
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// 创建调用者
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Invoker invoker = new Invoker();
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// 创建命令接收者
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AbstractReceiver abstractReceiver = new ReceiverA();
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// 创建命令，传入接收者
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AbstractAction abstractAction = new ActionA(abstractReceiver);
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// AbstractAction abstractAction = new ActionB(abstractReceiver);
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// 发布命令
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invoker.setAbstractAction(abstractAction);
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// 执行命令
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invoker.action();
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}
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}

‎java-des/src/com/java/design/command/Invoker.java

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package com.java.design.command;
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public class Invoker {
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private AbstractAction abstractAction;
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public void setAbstractAction(AbstractAction abstractAction) {
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this.abstractAction = abstractAction;
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}
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public void action() {
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this.abstractAction.excute();
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}
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}

‎java-des/src/com/java/design/command/ReceiverA.java

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package com.java.design.command;
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public class ReceiverA extends AbstractReceiver {
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@Override
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void cook() {
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System.out.println("成功接收到命令A 并执行完毕 ...");
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}
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}

‎java-des/src/com/java/design/command/ReceiverB.java

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package com.java.design.command;
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public class ReceiverB extends AbstractReceiver {
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@Override
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void cook() {
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System.out.println("成功接收到命令B 并执行完毕 ...");
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}
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}

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