SpringBoot项目集成RocketMQ

SpringBoot项目集成RocketMQ 依赖坐标

<dependency>
    <groupId>org.apache.rocketmqgroupId>
    <artifactId>rocketmq-spring-boot-starterartifactId>
    <version>2.0.3version>
dependency>
<dependency>
    <groupId>org.apache.rocketmqgroupId>
    <artifactId>rocketmq-clientartifactId>
    <version>4.6.0version>
dependency>

配置

#RocketMQ相关配置
#消费者只需要配置mq的server地址即可，生产者也要配置
rocketmq.name-server=127.0.0.1:9876
rocketmq.producer.group=${spring.application.name}
# 发送时间超时时间
rocketmq.producer.send-message-timeout=300000
#异步消息发送失败重试次数
rocketmq.producer.retry-times-when-send-async-failed=0
#消息发送失败后的最大重试次数
rocketmq.producer.retry-times-when-send-failed=2
#消息Body超过多大开始压缩（Consumer收到消息会自动解压缩），单位字节
rocketmq.producer.compress-message-body-threshold=4096
#消息最大容量
rocketmq.producer.max-message-size=4194304
rocketmq.producer.retry-next-server=true

消息发送代码

import org.apache.rocketmq.spring.core.RocketMQTemplate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.messaging.MessagingException;
import org.springframework.stereotype.Service;

/**
 * 消息发送
 *
 * @author zhangzengxiu
 * @date 2022/4/24
 */
@Service
public class ProduceMessage {
    private static final Logger logger = LoggerFactory.getLogger(ProduceMessage.class);

    @Autowired
    private RocketMQTemplate rocketMQTemplate;

    public Boolean sendMsg(String msg) {
        try {
            rocketMQTemplate.convertAndSend("xxtopic", msg);
        } catch (MessagingException e) {
            logger.error("send msg error,msg=" + msg);
            return false;
        }
        return true;
    }
}

消息消费代码

import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
import org.apache.rocketmq.spring.core.RocketMQListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

/**
 * 消费消息
 *
 * @author zhangzengxiu
 * @date 2022/4/24
 */
@Component
@RocketMQMessageListener(topic = "xxtopic", 	//监听指定topic和消息的生产者是同一个topic
        consumerGroup = "yyyGroup",         	 //group：不用和生产者group相同 ( 在RocketMQ中消费者和发送者组没有关系 )
        selectorExpression = "*",                 // *表示所有 默认也是*
        selectorType = SelectorType.TAG,          //是按照tag还是SQL92，SQL92需要在RocketMQ机器开启配置
        messageModel = MessageModel.CLUSTERING    //消费模式：默认 CLUSTERING （ CLUSTERING：负载均衡 ）（ BROADCASTING：广播机制 ）
)
public class ConsumerMessage implements RocketMQListener {
    private static final Logger LOGGER = LoggerFactory.getLogger(ConsumerMessage.class);

    /**
     * 监听消息
     *
     * @param s
     */
    @Override
    public void onMessage(String s) {

        //消费消息代码

    }
}