Spring Boot+RocketMQ 实现多实例分布式环境下的事件驱动

pom.xml导入RocketMQ依赖

<dependency>
    <groupId>org.apache.rocketmq</groupId>
    <artifactId>rocketmq-spring-boot-starter</artifactId>
    <version>2.2.2</version>
</dependency>

application.yml中添加配置

rocketmq:
    name-server: 127.0.0.1:9876
    producer:
        group: x
        access-key: myaccesskey
        secret-key: mysecretKey
        send-message-timeout: 10000
        tls-enable: true
    consumer:
        group: x
        access-key: myaccesskey
        secret-key: mysecretKey
        tls-enable: true

创建MQ工具类

public class MqUtil {

    private final RocketMQTemplate rocketMQTemplate;

    public MqUtil(RocketMQTemplate rocketMQTemplate) {
        this.rocketMQTemplate = rocketMQTemplate;
    }

    /**
     * 单条通知发送
     *
     * @param topic   主题
     * @param message 消息
     */
    public void convertAndSend(String topic, Object message) {
        rocketMQTemplate.convertAndSend(topic, message);
    }

    /**
     * 批量通知发送
     *
     * @param topic    主题
     * @param messages 消息集合
     */
    public <T extends Message<?>> SendResult syncSend(String topic, Collection<T> messages) {
        return rocketMQTemplate.syncSend(topic, messages);
    }

    /**
     * 批量通知发送
     *
     * @param topic        主题
     * @param messages     消息集合
     * @param sendCallback 回调函数
     */
    public <T extends Message<?>> void asyncSend(String topic, Collection<T> messages, SendCallback sendCallback) {
        rocketMQTemplate.asyncSend(topic, messages, sendCallback);
    }
}

注入工具类Bean

@Bean
public MqUtil mqUtil(RocketMQTemplate rocketMQTemplate) {
  return new MqUtil(rocketMQTemplate);
}

测试发消息

@Resource
private MqUtil mqUtil;

@Test
public void test() {
  mqUtil.convertAndSend(TopicConstant.TOPIC_B, "123456");
}

订阅接收消息

@Slf4j
@Service
@RequiredArgsConstructor(onConstructor = @__({@Autowired}))
@RocketMQMessageListener(consumerGroup = GroupConstant.GROUP_A, topic = TopicConstant.TOPIC_B)
public class TopicAConsumer implements RocketMQListener<Message> {

    @Override
    public void onMessage(Message message) {
        log.info(JsonUtil.toJsonStr(message));
    }
}