Consume Message

Push mode

Modify application.properties

## application.properties
rocketmq.name-server=127.0.0.1:9876

Note:

Maybe you need change 127.0.0.1:9876 with your real NameServer address for RocketMQ

@SpringBootApplication
public class ConsumerApplication{
    
    public static void main(String[] args){
        SpringApplication.run(ConsumerApplication.class, args);
    }
    
    @Slf4j
    @Service
    @RocketMQMessageListener(topic = "test-topic-1", consumerGroup = "my-consumer_test-topic-1")
    public class MyConsumer1 implements RocketMQListener<String>{
        public void onMessage(String message) {
            log.info("received message: {}", message);
        }
    }
    
    @Slf4j
    @Service
    @RocketMQMessageListener(topic = "test-topic-2", consumerGroup = "my-consumer_test-topic-2")
    public class MyConsumer2 implements RocketMQListener<OrderPaidEvent>{
        public void onMessage(OrderPaidEvent orderPaidEvent) {
            log.info("received orderPaidEvent: {}", orderPaidEvent);
        }
    }
}

More relevant configurations for consuming:

see: RocketMQMessageListener

Pull mode

Starting from RocketMQ Spring 2.2.0, RocketMQ Spring supports consume with pull mode.

Modify application.properties

## application.properties
rocketmq.name-server=127.0.0.1:9876
# When set rocketmq.pull-consumer.group and rocketmq.pull-consumer.topic, rocketmqTemplate will start lite pull consumer
# If you do not want to use lite pull consumer, please do not set rocketmq.pull-consumer.group and rocketmq.pull-consumer.topic
rocketmq.pull-consumer.group=my-group1
rocketmq.pull-consumer.topic=test

Note:

Maybe you need change 127.0.0.1:9876 with your real NameServer address for RocketMQ

The effective configuration of lite pull consumer before is rocketmq.consumer.group and rocketmq.consumer.topic, but since it is very easy to be confused with push-consumer, it is changed to rocketmq.pull-consumer.group and rocketmq.pull-consumer.topic after version 2.2.3

@SpringBootApplication
public class ConsumerApplication implements CommandLineRunner {

    @Resource
    private RocketMQTemplate rocketMQTemplate;

    @Resource(name = "extRocketMQTemplate")
    private RocketMQTemplate extRocketMQTemplate;

    public static void main(String[] args) {
        SpringApplication.run(ConsumerApplication.class, args);
    }

    @Override
    public void run(String... args) throws Exception {
        //This is an example of pull consumer using rocketMQTemplate.
        List<String> messages = rocketMQTemplate.receive(String.class);
        System.out.printf("receive from rocketMQTemplate, messages=%s %n", messages);

        //This is an example of pull consumer using extRocketMQTemplate.
        messages = extRocketMQTemplate.receive(String.class);
        System.out.printf("receive from extRocketMQTemplate, messages=%s %n", messages);
    }
}