命令模式

设计模式的意义在于：面向业务内容、业务数据结构和系统架构，高内聚低耦合、优雅的将平面逻辑立体化。

package designPattern;
/**
 * 命令模式
 * @author Administrator
 */
public class B10_CommandTest {

    /**
     * @param args
     */
    public static void main(String[] args) {
         Receiver rec = new Receiver();
        Command cmd = new CommandImpl(rec);
        Invoker i = new Invoker();
        i.setCommand(cmd);
        i.execute();
    }
}
//command 声明执行操作的接口。
abstract class Command {    
    protected Receiver receiver;    
    public Command(Receiver receiver) {
        this.receiver = receiver;
    }    
    public abstract void execute();
}
//concreteCommand  将一个接收者对象绑定于一个动作。调用接收者相应的操作，以实现Execute。
class CommandImpl extends Command {
    public CommandImpl(Receiver receiver) {
        super(receiver);
    }
    
    public void execute() {
        receiver.receive();
    }
}
//invoker 要求该命令执行这个请求。
class Invoker {
    private Command command;
    
    public void setCommand(Command command) {
        this.command = command;
    }
    
    public void execute() {
        command.execute();
    }
}
//receiver
class Receiver {

    public void receive() {
        System.out.println("This is Receive class!");
    }
}

 

环境：JDK1.6，MAVEN，tomcat，eclipse

源码地址：https://files.cnblogs.com/files/xiluhua/designPattern.rar

欢迎亲们评论指教。