Springboot 集成 RocketMq（入门）

1.RocketMq安装部署

Linux 安装 RocketMq-CSDN博客

2.添加依赖包

	org.apache.rocketmq
	rocketmq-spring-boot-starter
	2.2.3

3.配置

rocketmq:
  name-server: 127.0.0.1:9876
  # 生产者
  producer:
    group: group_one
    # 消息发送超时时间
    send-message-timeout: 30000
    # 消息最大长度4M
    max-message-size: 4096
    # 消息发送失败重试次数
    retry-times-when-send-failed: 3
    # 异步消息发送失败重试次数
    retry-times-when-send-async-failed: 2
  # 消费者
  consumer:
    group: group_one
    # 每次提取的最大消息数
    pull-batch-size: 5

4.生成者代码

@RestController
@Slf4j
public class ProducerController {

    @Resource
    private RocketMQTemplate rocketMqTemplate;
    @Resource
    private DefaultMQProducer defaultMqProducer;

    @GetMapping("/send/msg1/{messageBody}")
    public String sendMsg1(@PathVariable("messageBody") String messageBody) {
        // 发送消息
        rocketMqTemplate.convertAndSend("topic1", messageBody);
        return "OK";
    }

    @GetMapping("/send/msg2/{messageBody}")
    public String sendMsg2(@PathVariable("messageBody") String messageBody) {
        // 构建消息对象
        Message message = new Message();
        message.setTopic("topic2");
        message.setTags("boot-mq-tag");
        message.setKeys("boot-mq-key");
        message.setBody(messageBody.getBytes());
        // 发送消息，打印日志
        SendResult sendResult = null;
        try {
            sendResult = defaultMqProducer.send(message);
            log.info("sendMsg2 msgId:{},sendStatus:{}", sendResult.getMsgId(), sendResult.getSendStatus());
        } catch (Exception e) {
            log.info("sendMsg2 error", e);
            return "FAIL";
        }
        return "OK";
    }
}

5.消费者

package com.lhy.demo.rocketMq;

import lombok.extern.slf4j.Slf4j;
import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
import org.apache.rocketmq.spring.core.RocketMQListener;
import org.springframework.stereotype.Component;

@Component
@RocketMQMessageListener(topic = "topic1", consumerGroup = "topic1")
@Slf4j
public class MyTopic1Consumer implements RocketMQListener {

    @Override
    public void onMessage(String message) {
        // 处理消息的逻辑
        log.info("Received topic1 message: {}", message);
    }

}

package com.lhy.demo.rocketMq;

import lombok.extern.slf4j.Slf4j;
import org.apache.rocketmq.common.message.Message;
import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
import org.apache.rocketmq.spring.core.RocketMQListener;
import org.springframework.stereotype.Component;

@Component
@RocketMQMessageListener(topic = "topic2", consumerGroup = "topic2")
@Slf4j
public class MyTopic2Consumer implements RocketMQListener {

    @Override
    public void onMessage(Message message) {
        // 处理消息的逻辑
        log.info("Received topic2 message: {}", message);
    }

}