桥接模式实例消息发送

墨蓝 2023-10-06 10:04 4阅读 0赞

发送消息  
现在我们要实现这样一个功能：发送消息。从业务上看，消息又分成普通消息、加急消息和特急消息多种，不同的消息类型，业务功能处理是不一样的，比如加急消息是在消息上添加“加急”字样，而特急消息除了添加特急外，还会做一条催促的记录，多久不完成会继续催促。从发送消息的手段上看，又有系统内短消息、手机短消息、邮件等等。现在要实现这样的发送提示消息的功能，该如何实现呢？

UML图：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzE1NzE5NjEz_size_16_color_FFFFFF_t_70]  
代码：

package xaioxifasong;
     
    public abstract class AbstractMeesage {
        
    protected MessageMethod impl;
    public AbstractMeesage(MessageMethod impl)
    {
        this.impl=impl;
    }
    public abstract void sendMessage(String message,String user);
    }

package xaioxifasong;
     
    public interface MessageMethod {
        
    public void send(String message,String user);
    }

package xaioxifasong;
     
    public class CommonMessage extends AbstractMeesage {
        
     
    	public CommonMessage(MessageMethod impl) {
        
    		super(impl);
    		
    	}
     
    	@Override
    	public void sendMessage(String message, String user) {
        
    	impl.send(message,user);
    	}
    	
     
    }

package xaioxifasong;
     
    public class UrgentMessage extends AbstractMeesage {
        
     
    	public UrgentMessage(MessageMethod impl) {
        
    		super(impl);
    		// TODO 自动生成的构造函数存根
    	}
     
    	@Override
    	public void sendMessage(String message, String user) {
        
    		message="加急"+message;
     impl.send(message,user);
    	}
    	public Object watch(String messageid)
    	{
        return null;
     
    }
    }

package xaioxifasong;
     
    public class SpecialMessage extends AbstractMeesage{
        
     
    	public SpecialMessage(MessageMethod impl) {
        
    		super(impl);
    		
    	}
     
    	@Override
    	public void sendMessage(String message, String user) {
        
    	message="特急"+message;
    		impl.send(message,user);
    	}
    	public void hurry(String messageid)
    	{
        System.out.println("快点");
     
    }
    }

package xaioxifasong;
     
    public class SMS implements MessageMethod {
        
     
    	@Override
    	public void send(String message, String user) {
        
    		System.out.println("使用站内消息发送方式发送消息"+message+"给"+user);
    		
     
    	}
     
    }

package xaioxifasong;
     
    public class Email implements MessageMethod {
        
     
    	@Override
    	public void send(String message, String user) {
        
    		System.out.println("以邮件方式发送消息"+message+"给"+user);
     
    	}
     
    }

package xaioxifasong;
     
    public class MobileMeeage implements MessageMethod {
        
     
    	@Override
    	public void send(String message, String user) {
        
    		System.out.println("手机短消息方式发送信息"+message+"给"+user);
    		
     
    	}
     
    }

package xaioxifasong;
     
    public class Test {
        
    public static void main(String args[])
    {
        MessageMethod impl=new SMS();
    AbstractMeesage m=new CommonMessage(impl);
    m.sendMessage("喝一杯茶", "小李");
    MessageMethod impl2=new Email();
    MessageMethod impl3=new MobileMeeage();
    AbstractMeesage p=new UrgentMessage(impl2);
    AbstractMeesage q=new SpecialMessage(impl3);
    p.sendMessage("喝一杯茶", "小王");
    q.sendMessage("喝一杯茶", "老张");
    }
    }

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzE1NzE5NjEz_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200530221844381.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzE1NzE5NjEz,size_16,color_FFFFFF,t_70