rabbitmq整合springboot实现延迟队列具体代码实现

你好，关于rabbitmq整合springboot实现延迟队列的具体代码实现，可以参考以下步骤：

1. 在pom.xml文件中添加以下依赖：

<dependency>
    <groupId>org.springframework.amqp</groupId>
    <artifactId>spring-rabbit</artifactId>
    <version>2.2.10.RELEASE</version>
</dependency>

2. 在application.yml文件中添加以下配置：

spring:
  rabbitmq:
    host: localhost
    port: 5672
    username: guest
    password: guest
    virtual-host: /
    listener:
      simple:
        acknowledge-mode: manual
        retry:
          enabled: true
          initial-interval: 100
          max-attempts: 3
          multiplier: 2
          max-interval: 10000
    template:
      exchange: delay_exchange
      routing-key: delay_queue
      default-receive-queue: delay_queue
      message:
        converter: json

3. 创建延迟队列和交换机

@Configuration
public class RabbitConfig {
    @Bean
    public Queue delayQueue() {
        Map<String, Object> args = new HashMap<>();
        args.put("x-dead-letter-exchange", "delay_exchange");
        args.put("x-dead-letter-routing-key", "delay_queue");
        return new Queue("delay_queue", true, false, false, args);
    }

    @Bean
    public DirectExchange delayExchange() {
        return new DirectExchange("delay_exchange");
    }

    @Bean
    public Binding delayBinding() {
        return BindingBuilder.bind(delayQueue()).to(delayExchange()).with("delay_queue");
    }
}

4. 创建消息发送者

@Service
public class DelaySender {
    @Autowired
    private RabbitTemplate rabbitTemplate;

    public void sendDelayMessage(String message, long delayTime) {
        rabbitTemplate.convertAndSend("delay_exchange", "delay_queue", message, new MessagePostProcessor() {
            @Override
            public Message postProcessMessage(Message message) throws AmqpException {
                message.getMessageProperties().setExpiration(String.valueOf(delayTime));
                return message;
            }
        });
    }
}

5. 创建消息消费者

@Component
@RabbitListener(queues = "delay_queue")
public class DelayReceiver {
    @RabbitHandler
    public void process(String message) {
        System.out.println("Received message: " + message);
    }
}

以上就是rabbitmq整合springboot实现延迟队列的具体代码实现，希望能对你有所帮助。