org.apache.rocketmq     rocketmq-spring-boot-starter     2.3.1 

application.properties

spring.application.name=springboot-rocketmq server.port=8999    rocketmq.name-server=xxx.xxx.xxx:9876 rocketmq.producer.group=mq_producer_group_test 

控制器

package com.example.springbootrocketmq.controller;  import com.example.springbootrocketmq.pojo.User; import com.example.springbootrocketmq.producer.RocketMQProducerService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController;  /**  * @author hrui  * @date 2024/8/2 11:40  */ @RestController @RequestMapping("/api/test") public class TestController {      @Autowired     private RocketMQProducerService producerService;      @GetMapping("/send")     public String sendMessage() {         User user = new User("Hrui", 18, "China");         producerService.sendSimpleMessage("mq_test-topic", user);         return "消息发送成功";     } } 

生产者

package com.example.springbootrocketmq.producer;  import com.example.springbootrocketmq.pojo.User; import jakarta.annotation.Resource; import org.apache.rocketmq.spring.core.RocketMQTemplate; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service;  /**  * @author hrui  * @date 2024/8/2 11:36  */ @Service public class RocketMQProducerService {      @Autowired     private RocketMQTemplate rocketMQTemplate;       /**      * 发送普通消息      * @param topic      * @param message      */     public void sendSimpleMessage(String topic, User message) {         rocketMQTemplate.convertAndSend(topic, message);     } } 

消费者

package com.example.springbootrocketmq.consumer;  import com.example.springbootrocketmq.pojo.User; import org.apache.rocketmq.spring.annotation.RocketMQMessageListener; import org.apache.rocketmq.spring.core.RocketMQListener; import org.springframework.stereotype.Service;  /**  * @author hrui  * @date 2024/8/2 11:44  */ @Service @RocketMQMessageListener(topic = "mq_test-topic", consumerGroup = "mq_consumer_group_test") public class RocketMQConsumerService implements RocketMQListener {     @Override     public void onMessage(User user) {         System.out.println("消费者接收到消息: " + user);     } }