一、导入maven依赖，rocketmq-spring-boot-starter可在maven中央仓库查找
org.apache.rocketmq rocketmq-spring-boot-starter 2.0.4 rocketmq 服务搭建在此省略…..
二、yml 配置
rocketmq:
name-server: http://127.0.0.1:9876 #rocketmq服务地址
producer:
group: rocketmq_test #自定义的组名称
send-message-timeout: 3000 #消息发送超时时长
若rocketmq是在阿里云平台买的，使用以下配置即可
rocketmq:
name-server: http://xxxxx.mq-internet-access.mq-internet.aliyuncs.com:80 #阿里云rocketmq连接地址
producer:
group: rocketmq_test #自定义的组名称
access-key: your aliyun accessKey
secret-key: your aliyun secretKey
send-message-timeout: 3000 #消息发送超时时长
三、发送消息
@Service
public class RocketMQProducer{
@Autowired
private RocketMQTemplate rocketMQTemplate;
@Value(“${rocketmq.producer.send-message-timeout}”)
private Integer messageTimeOut;
/**
- 发送普通消息
*/
public void sendMsg(String msgBody){
rocketMQTemplate.syncSend(“queue_test_topic”,MessageBuilder.withPayload(msgBody).build());
}
/**
- 发送异步消息 在SendCallback中可处理相关成功失败时的逻辑
*/
public void sendAsyncMsg(String msgBody){
rocketMQTemplate.asyncSend(“queue_test_topic”,MessageBuilder.withPayload(msgBody).build(), new SendCallback() {
@Override
public void onSuccess(SendResult sendResult) {
// 处理消息发送成功逻辑
}
@Override
public void onException(Throwable e) {
// 处理消息发送异常逻辑
}
});
}
/**
- 发送延时消息
- 在start版本中 延时消息一共分为18个等级分别为：1s 5s 10s 30s 1m 2m 3m 4m 5m 6m 7m 8m 9m 10m 20m 30m 1h 2h
*/
public void sendDelayMsg(String msgBody, Integer delayLevel){
rocketMQTemplate.syncSend(“queue_test_topic”,MessageBuilder.withPayload(msgBody).build(),messageTimeOut,delayLevel);
}
/**
- 发送带tag的消息,直接在topic后面加上”:tag”
*/
public void sendTagMsg(String msgBody){
rocketMQTemplate.syncSend(“queue_test_topic:tag1”,MessageBuilder.withPayload(msgBody).build());
}
}
四、接收消息
/**
rocketmq 消息监听，@RocketMQMessageListener中的selectorExpression为tag，默认为*
/
@Slf4j
@Component
@RocketMQMessageListener(topic = “queue_test_topic”,selectorExpression=””,consumerGroup = “queue_group_test”)
public class RocketMQMsgListener implements RocketMQListener {
@Autowired
private RocketMQTemplate rocketMQTemplate;
@Override
public void onMessage(MessageExt message) {
byte[] body = message.getBody();
String msg = new String(body);
log.info(“接收到消息：{}”, msg);
}
}
https://blog.csdn.net/qq_38306688/article/details/107716046