说明：此模式实在路由key模式的基础上，使用了通配符来管理消费者接收消息。生产者P发送消息到交换机X，type=topic，交换机根据绑定队列的routing key的值进行通配符匹配；
符号#：匹配一个或者多个词cn.# 可以匹配cn.新闻或者cn.新闻.国内新闻
符号*：只能匹配一个词 cn.* 可以匹配cn.新闻或者us.新闻
1、maven依赖
2、spring-rabbit 编写
2.1、生产者：
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:rabbit="http://www.springframework.org/schema/rabbit" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/rabbit http://www.springframework.org/schema/rabbit/spring-rabbit.xsd"> virtual-host="/test">
package com.liming.rabbit.producer;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.liming.rabbit.entity.News;
import java.util.Date;
public class NewsProducer {
private RabbitTemplate rabbitTemplate=null;
public RabbitTemplate getRabbitTemplate() {
return rabbitTemplate;
}
public void setRabbitTemplate(RabbitTemplate rabbitTemplate) {
this.rabbitTemplate = rabbitTemplate;
}
public void sendNews(String routingKey,News news){
//convertAndSend用于向exchange发送数据
//第一个参数是路由键 第二个参数是发送的对象
rabbitTemplate.convertAndSend(routingKey,news);
System.out.println("新闻发送成功");
}
public static void main(String[] args) {
ApplicationContext applicationContext=new ClassPathXmlApplicationContext("applicatonContext.xml");
NewsProducer n=(NewsProducer)applicationContext.getBean("newsProducer");
n.sendNews("us.20190101",new News("新华社","国际新闻内容：xxxx",new Date(),"国际新闻"));
n.sendNews("cn.20190101",new News("凤凰tv","国内新闻内容：yyyy",new Date(),"国内新闻"));
}
}
2.2、消费者
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:rabbit="http://www.springframework.org/schema/rabbit" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/rabbit http://www.springframework.org/schema/rabbit/spring-rabbit.xsd"> virtual-host="/test">
package com.liming.rabbit.consumer;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.liming.rabbit.entity.News;
public class NewsConsumer {
public void recv(News news){
System.out.println("接收到最新新闻："+news.toString());
}
public static void main(String[] args) {
ApplicationContext applicationContext=new ClassPathXmlApplicationContext("applicatonContext.xml");
}
}
2.3、发送消息的实体类
package com.liming.rabbit.entity;
import java.io.Serializable;
import java.util.Date;
public class News implements Serializable {
private String source;
private String title;
private Date createTime;
private String content;
public News(String source, String title, Date createTime, String content) {
this.source = source;
this.title = title;
this.createTime = createTime;
this.content = content;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public String getSource() {
return source;
}
public void setSource(String source) {
this.source = source;
}
@Override
public String toString() {
return "News [source=" + source + ", title=" + title + ", createTime=" + createTime + ", content=" + content
+ "]";
}
}
3、运行效果