命令模式

Folgerjun · web-flow · commit 10f2cb610a14 · 2018-03-12T10:34:44.000+08:00
命令模式
diff --git a/java-des/src/com/java/design/command/AbstractAction.java b/java-des/src/com/java/design/command/AbstractAction.java
@@ -0,0 +1,6 @@
+package com.java.design.command;
+
+public interface AbstractAction {
+
+	void excute();
+}
diff --git a/java-des/src/com/java/design/command/AbstractReceiver.java b/java-des/src/com/java/design/command/AbstractReceiver.java
@@ -0,0 +1,6 @@
+package com.java.design.command;
+
+public abstract class AbstractReceiver {
+
+	abstract void cook();
+}
diff --git a/java-des/src/com/java/design/command/ActionA.java b/java-des/src/com/java/design/command/ActionA.java
@@ -0,0 +1,18 @@
+package com.java.design.command;
+
+public class ActionA implements AbstractAction {
+
+	private AbstractReceiver abstractReceiver;
+
+	public ActionA(AbstractReceiver abstractReceiver) {
+
+		this.abstractReceiver = abstractReceiver;
+	}
+
+	@Override
+	public void excute() {
+
+		System.out.println("命令A发布 ...");
+		this.abstractReceiver.cook();
+	}
+}
diff --git a/java-des/src/com/java/design/command/ActionB.java b/java-des/src/com/java/design/command/ActionB.java
@@ -0,0 +1,18 @@
+package com.java.design.command;
+
+public class ActionB implements AbstractAction {
+
+	private AbstractReceiver abstractReceiver;
+
+	public ActionB(AbstractReceiver abstractReceiver) {
+
+		this.abstractReceiver = abstractReceiver;
+	}
+
+	@Override
+	public void excute() {
+
+		System.out.println("命令B发布 ...");
+		this.abstractReceiver.cook();
+	}
+}
diff --git a/java-des/src/com/java/design/command/CommandPattern.java b/java-des/src/com/java/design/command/CommandPattern.java
@@ -0,0 +1,32 @@
+package com.java.design.command;
+
+/**
+ * 命令模式 ----->
+ * 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，
+ * 根据点菜的口味不同厨师做不同的菜
+ * 
+ * @author Administrator
+ *
+ */
+public class CommandPattern {
+
+	public static void main(String[] args) {
+
+		// 创建调用者
+		Invoker invoker = new Invoker();
+
+		// 创建命令接收者
+		AbstractReceiver abstractReceiver = new ReceiverA();
+
+		// 创建命令，传入接收者
+		AbstractAction abstractAction = new ActionA(abstractReceiver);
+		// AbstractAction abstractAction = new ActionB(abstractReceiver);
+
+		// 发布命令
+		invoker.setAbstractAction(abstractAction);
+
+		// 执行命令
+		invoker.action();
+	}
+
+}
diff --git a/java-des/src/com/java/design/command/Invoker.java b/java-des/src/com/java/design/command/Invoker.java
@@ -0,0 +1,16 @@
+package com.java.design.command;
+
+public class Invoker {
+
+	private AbstractAction abstractAction;
+
+	public void setAbstractAction(AbstractAction abstractAction) {
+		this.abstractAction = abstractAction;
+	}
+
+	public void action() {
+
+		this.abstractAction.excute();
+	}
+
+}
diff --git a/java-des/src/com/java/design/command/ReceiverA.java b/java-des/src/com/java/design/command/ReceiverA.java
@@ -0,0 +1,11 @@
+package com.java.design.command;
+
+public class ReceiverA extends AbstractReceiver {
+
+	@Override
+	void cook() {
+
+		System.out.println("成功接收到命令A 并执行完毕 ...");
+	}
+
+}
diff --git a/java-des/src/com/java/design/command/ReceiverB.java b/java-des/src/com/java/design/command/ReceiverB.java
@@ -0,0 +1,10 @@
+package com.java.design.command;
+
+public class ReceiverB extends AbstractReceiver {
+
+	@Override
+	void cook() {
+
+		System.out.println("成功接收到命令B 并执行完毕 ...");
+	}
+}
