RocketMq简单使用

本文已参与「新人创作礼」活动，一起开启掘金创作之路

搭建好RocketMQ，使用SpringBoot项目

需要引入依赖

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

配置application.yml

spring:
  application:
    name: springboot-rocketmq
rocketmq:
  name-server: http://192.168.80.246:9877
  producer:
    group: boot_producer_group
    send-message-timeout: 30000

创建生产者类 ProducerComponent，可以根据每条来进行发送测试

@Component
@Slf4j
public class ProducerComponent {

    @Autowired
    private RocketMQTemplate rocketMQTemplate;

    @Value("${rocketmq.producer.send-message-timeout}")
    private Integer messageTimeOut;

    @PostConstruct
    public void test(){
        log.info("消息启动！");
        // 如下三种方式等价,第二种加入key,第三种是另一种方式加入key
        //rocketMQTemplate.convertAndSend("test-topic-1", "Hello, World!");
        //rocketMQTemplate.send("test-topic-1",MessageBuilder.withPayload("Hello, World! I'm from spring message").setHeader(RocketMQHeaders.KEYS,"67").build());
        //rocketMQTemplate.convertAndSend("test-topic-1","Hello, World!", Collections.singletonMap(RocketMQHeaders.KEYS, "pumpkin"));

        // topic: ORDER，tag: paid, cacel
        //rocketMQTemplate.convertAndSend("ORDER:paid", "Hello, World!");
        //rocketMQTemplate.convertAndSend("ORDER:cancel", "Hello, World1!");
        //test-topic-1 主题 | tag1 标签 | pumpkin key
        //rocketMQTemplate.convertAndSend("test-topic-1:tag1","Hello, World!", Collections.singletonMap(RocketMQHeaders.KEYS, "pumpkin"));

        //消息体为自定义对象
        //rocketMQTemplate.convertAndSend("test-topic-2", new User("T_001", "address",1));

        // 发送延迟消息,5代表1m（分钟）
        //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
        //rocketMQTemplate.syncSend("test-topic-1:delay",MessageBuilder.withPayload("11111").build(),messageTimeOut,5);

        // 发送即发即失消息（不关心发送结果）
        //rocketMQTemplate.sendOneWay("test-topic-1:onway", MessageBuilder.withPayload("I'm one way message").build());
        //发送顺序消息,根据key选择队列。例如：orderId，productId
        //rocketMQTemplate.syncSendOrderly("test-topic-1:order", "I'm order message", "1234");

        // 发送异步消息
        rocketMQTemplate.asyncSend("test-topic-1:async111777", MessageBuilder.withPayload("I'm one async messag111e").build(), new SendCallback() {
            @Override
            public void onSuccess(SendResult sendResult) {
                System.out.println("发送成功");
            }

            @Override
            public void onException(Throwable throwable) {
                System.out.println("发送失败");
            }
        });
    }

    @Data
    @AllArgsConstructor
    class User{
        private String name;
        private String address;
        private Integer age;
    }
}

创建消费者

@Component
@RocketMQMessageListener(topic = "test-topic-1", consumerGroup = "my-consumer_test-topic-1",consumeMode = ConsumeMode.ORDERLY)
@Slf4j
public class ConsumerComponent implements RocketMQListener<String>{
    @Autowired
    private RocketMQTemplate rocketMQTemplate;

    @Override
    public void onMessage(String message) {
        log.info("received message: " + message);
    }
}

说明：SpringBoot启动后，生产者和消费者也会随之启动，发送和接收消息，如果消费者抛出异常，消息会重新进入RocketMQ进行消费。