Rocketmq根据Tag消费消息

package com.lazycece.sbac.rocketmq.tags;

import lombok.extern.slf4j.Slf4j;
import org.apache.rocketmq.spring.core.RocketMQTemplate;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;

/**
 * @author hjt
 * @date 2021/8/6
 */
@Component
@Slf4j
public class TagProducer {

    @Resource
    private RocketMQTemplate rocketMQTemplate;

    public void sendTagsMessage() {
        String[] tags = new String[]{"A", "B", "C", "D"};
        String message = "tags message :  ";
        for (int i = 0; i < tags.length; i++) {
//            int k = i % tags.length;

            rocketMQTemplate.syncSend("topic-tags:" + tags[i], message + tags[i]);
//            rocketMQTemplate.syncSend("topic-tags:" + tags[k], message + tags[k]);
        }
    }
}

消费端消费

package com.lazycece.sbac.rocketmq.tags;

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

/**
 * @author hjt
 * @date 2021/8/6
 */
@Component
@Slf4j
@RocketMQMessageListener(
        topic = "topic-tags",
        consumerGroup = "tags-consumer-group",
        selectorExpression = "A||B||C")
public class TagConsumer implements RocketMQListener<String> {

    @Override
    public void onMessage(String message) {
        System.out.println("messgaetag:"+message);
        log.info("======={}=======", message);
    }
}

输出

代码可以私信找我要哦