Springboot 快速集成RocketMq
1. 增加pom文件
<dependency> <groupId>org.hongxi</groupId> <artifactId>rocketmq-spring-boot-starter</artifactId> </dependency>
2. 配置
rocketmq: name-server: 192.168.0.84:9876 producer: group: test-group sendMsgTimeoutMillis: 3000 reconsumeTimes: 3
3. 登录rocketmq管理后台添加topic（operation-topic）
4. 生产者使用
@Autowired
RocketMQTemplate rocketMQTemplate;
@Test
public void sendHelloWorld() {
SendResult result = rocketMQTemplate.syncSend("operation-topic", "hello world");
log.info("发送结果：{}", JSON.toJSONString(result));
}
5. 消费者使用
@Component
@RocketMQMessageListener(topic = "operation-topic", //topic主题
consumerGroup = "consumer-group", //消费组
messageModel = MessageModel.CLUSTERING,
consumeMode = ConsumeMode.ORDERLY)
@Slf4j
public class MqTestListener implements RocketMQListener<String> {
@Override
public void onMessage(String message) {
log.info("接受到消息：{}", message);
}
}
6. 注意事项
如何使用tag
/**
* Same to {@link #syncSend(String, Message)}.
*
* @param destination formats: `topicName:tags`
* @param payload the Object to use as payload
* @return {@link SendResult}
*/
public SendResult syncSend(String destination, Object payload) {
return syncSend(destination, payload, producer.getSendMsgTimeout());
}
这里可以看到 destination = topicName:tags
消费模式
- 广播模式 MessageModel.BROADCASTING 所有消费者都会收到消息
- 集群模式 MessageModel.CLUSTERING 只有一个消费者会消费，类似于负载均衡
消费者如果存在一个为广播模式，消费模式都会广播模式
