摘要：那前面已经介绍过了Direct模式 (一)Topic转发模式 (二)，这次介绍下Fanout Exchange形式又叫广播形式,因此我们发送到路由器的消息会使得绑定到该路由器的每一个Queue接收到消息,这个时候就算指定了Key,或者规则(即上文中convertAndSend方法的参数2),也会被忽略!那么直接上代码,发送端配置如下:
package com.micai.springboot.mq.config;
import com.micai.springboot.base.BaseConfig;
import org.springframework.amqp.core.*;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
* 描述：Topic转发模式
* <p>
* Author: 赵新国
* Date: 2017/11/3 18:51
*/
@Configuration
public class SenderConf extends BaseConfig {
// ---------------------------------------------------- Direct 形式 -------------------------------------------- //
/*@Bean
public Queue queue() {
return new Queue(QUEUE_KEY);
}*/
// ---------------------------------------------------- Topic 形式 -------------------------------------------- //
/*@Bean(name = "message")
public Queue queueMessage() {
return new Queue("topic.message");
}
@Bean(name = "messages")
public Queue queueMessages() {
return new Queue("topic.messages");
}
@Bean
public TopicExchange exchange() {
return new TopicExchange("exchange");
}
@Bean
Binding bindingExchangeMessage(@Qualifier("message") Queue queueMessage, TopicExchange exchange) {
return BindingBuilder.bind(queueMessage).to(exchange).with("topic.message");
}
@Bean
Binding bindingExchangeMessages(@Qualifier("messages") Queue queueMessages, TopicExchange exchange) {
return BindingBuilder.bind(queueMessages).to(exchange).with("topic.#");//*表示一个词,#表示零个或多个词
}*/
// -------------------------------------------- Fanout Exchange形式 ------------------------------------------- //
@Bean(name="Amessage")
public Queue AMessage() {
return new Queue("fanout.A");
}
@Bean(name="Bmessage")
public Queue BMessage() {
return new Queue("fanout.B");
}
@Bean(name="Cmessage")
public Queue CMessage() {
return new Queue("fanout.C");
}
@Bean
FanoutExchange fanoutExchange() {
return new FanoutExchange("fanoutExchange");//配置广播路由器
}
@Bean
Binding bindingExchangeA(@Qualifier("Amessage") Queue AMessage,FanoutExchange fanoutExchange) {
return BindingBuilder.bind(AMessage).to(fanoutExchange);
}
@Bean
Binding bindingExchangeB(@Qualifier("Bmessage") Queue BMessage, FanoutExchange fanoutExchange) {
return BindingBuilder.bind(BMessage).to(fanoutExchange);
}
@Bean
Binding bindingExchangeC(@Qualifier("Cmessage") Queue CMessage, FanoutExchange fanoutExchange) {
return BindingBuilder.bind(CMessage).to(fanoutExchange);
}
}
package com.micai.springboot.mq;
import com.micai.springboot.base.BaseConfig;
import com.micai.springboot.entity.User;
import org.springframework.amqp.core.AmqpTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
/**
* 描述：消息生产者
* <p>
* Author: 赵新国
* Date: 2017/11/3 15:37
*/
@Component
public class Sender extends BaseConfig {
@Autowired
private AmqpTemplate rabbitTemplate;
public void send() {
// ---------------------------------------------------- Direct 形式 -------------------------------------------- //
// 在该生产者，我们会产生一个字符串，并发送到名为hello的队列中
/*String context = "Hello " + "Rabbit MQ！";
System.out.println("发送MQ消息 : " + context);
this.rabbitTemplate.convertAndSend(QUEUE_KEY, context);*/
// 发送对象，但是该对象必须实现Serializable接口
/*User user = new User(); //实现Serializable接口
user.setId(1L);
user.setName("张三");
this.rabbitTemplate.convertAndSend(QUEUE_KEY, user);*/
// ---------------------------------------------------- Topic 形式 -------------------------------------------- //
/*this.rabbitTemplate.convertAndSend("exchange", "topic.message", "hello, rabbit!");*/
// -------------------------------------------- Fanout Exchange形式 ------------------------------------------- //
this.rabbitTemplate.convertAndSend("fanoutExchange", "", "xixi,hlhdidi");// 参数2将被忽略
}
}
接收端监听器配置如下:
package com.micai.springboot.mq;
import com.micai.springboot.base.BaseConfig;
import com.micai.springboot.entity.User;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;
/**
* 描述：消息消费者
* @RabbitListener注解定义该类对hello队列的监听，
* 并用@RabbitHandler注解来指定对消息的处理方法。
* 所以，该消费者实现了对hello队列的消费，消费操作为输出消息的字符串内容
* Author: 赵新国
* Date: 2017/11/3 15:42
*/
@Component
public class Receiver extends BaseConfig {
// ---------------------------------------------------- Direct 形式 -------------------------------------------- //
//监听器监听指定的Queue
/*@RabbitListener(queues = QUEUE_KEY)
public void process(String str) {
System.out.println("接收MQ消息 : " + str);
}*/
// //监听器监听指定的Queue
/*@RabbitListener(queues = QUEUE_KEY)
public void process(User user) { //用User作为参数
System.out.println("接收MQ消息 : " + user);
}*/
// ---------------------------------------------------- Topic 形式 -------------------------------------------- //
/*@RabbitListener(queues="topic.message") //监听器监听指定的Queue
public void process1(String str) {
System.out.println("message:"+str);
}
@RabbitListener(queues="topic.messages") //监听器监听指定的Queue
public void process2(String str) {
System.out.println("messages:"+str);
}*/
// -------------------------------------------- Fanout Exchange形式 ------------------------------------------- //
@RabbitListener(queues="fanout.A")
public void processA(String str1) {
System.out.println("ReceiveA:"+str1);
}
@RabbitListener(queues="fanout.B")
public void processB(String str) {
System.out.println("ReceiveB:"+str);
}
@RabbitListener(queues="fanout.C")
public void processC(String str) {
System.out.println("ReceiveC:"+str);
}
}
运行测试代码,发现三个监听器都接收到了数据,测试成功，结果如下图：
