springboot使用RocketMQ 发送接受消息

Apache RocketMQ（官网地址：http://rocketmq.apache.org）是由阿里巴巴集团开源的大型消息队列，现在已经贡献给了Apache开源基金会，同时是一个分布式消息传递和流媒体平台，具有低延迟、高性能、可靠性、万亿级容量和灵活的可扩展性。（Github官网地址：https://github.com/apache/rocketmq）

1. 加入RocketMQ依赖

<dependency>
    <groupId>org.apache.rocketmq</groupId>
    <artifactId>rocketmq-spring-boot-starter</artifactId>
    <version>2.0.4</version>
</dependency>

2. 配置RocketMQ服务信息

xc:
  rocketmq2:
    topic-string: topic_string
    topic-user: topic_user
    string-consumer-group: string_consumer_group
    user-consumer-group: user_consumer_group
rocketmq:
  name-server: 172.19.25.168:9876
  producer:
    group: producer_group_test

3. 编写生产者和消费者

@Service
@RocketMQMessageListener(consumerGroup = "${xc.rocketmq2.string-consumer-group}", topic = "${xc.rocketmq2.topic-string}")
public class StringConsumer implements RocketMQListener<String> {

    private Logger log = LoggerFactory.getLogger(this.getClass());

    @Override
    public void onMessage(String message) {
        log.info("消费字符串消息{}", message);
    }
}

@Service
@RocketMQMessageListener(consumerGroup = "${xc.rocketmq2.user-consumer-group}", topic = "${xc.rocketmq2.topic-user}")
public class UserConsumer implements RocketMQListener<User> {

    private Logger log = LoggerFactory.getLogger(this.getClass());

    @Override
    public void onMessage(User user) {
        log.info("消费用户消息{}", user.getUsername());
    }
}

@RestController
@RequestMapping("rocketmq")
public class RocketmqController {

    private Logger log = LoggerFactory.getLogger(this.getClass());

    @Autowired
    private XcRocketMq2 xcRocketMq2;

    @Resource
    private RocketMQTemplate rocketMQTemplate;

    /**
     * 同步发送
     * 页面访问http://localhost:8080/rocketmq/sync
     *
     * @throws Exception
     */
    @GetMapping("sync")
    public void sync() {
        SendResult sendResult = rocketMQTemplate.syncSend(xcRocketMq2.getTopicString(), "Hello world!");
        log.info("同步发送字符串{}, 发送结果{}", xcRocketMq2.getTopicString(), sendResult);

        User user = new User();
        user.setId("1");
        user.setUsername("wusq");
        sendResult = rocketMQTemplate.syncSend(xcRocketMq2.getTopicUser(), user);
        log.info("同步发送对象{}, 发送结果{}", xcRocketMq2.getTopicUser(), sendResult);
    }

    /**
     * 异步发送
     * 页面访问http://localhost:8080/rocketmq/async
     *
     * @throws Exception
     */
    @GetMapping("async")
    public void async() {

        rocketMQTemplate.asyncSend(xcRocketMq2.getTopicString(), "Hello world!", new SendCallback() {
            @Override
            public void onSuccess(SendResult var1) {
                log.info("异步发送成功{}", var1);
            }

            @Override
            public void onException(Throwable var1) {
                log.info("异步发送失败{}", var1);
            }
        });
    }

    /**
     * 单向发送
     * 页面访问http://localhost:8080/rocketmq/oneway
     *
     * @throws Exception
     */
    @GetMapping("oneway")
    public void oneway() {
        rocketMQTemplate.sendOneWay(xcRocketMq2.getTopicString(), "Hello world!");
        log.info("单向发送");
    }
}