RabbitMQ 实战

安装

docker run -d --hostname my-rabbit --name rabbitmq -p 15672:15672 -p 5672:5672 -e RABBITMQ_DEFAULT_USER=user -e RABBITMQ_DEFAULT_PASS=password rabbitmq:management-alpine

实战

0. 依赖

   <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-amqp</artifactId>
   </dependency>
   

1. 配置

   spring:
     rabbitmq:
       host: localhost
       port: 5672
       username: user
       password: password
   

   @Configuration
   public class RabbitConfig {
   ​
       /**
        * 配置消息转换器
        *
        * @return
        */
       @Bean
       public MessageConverter messageConverter() {
           return new Jackson2JsonMessageConverter();
       }
   ​
       /**
        * 声明一个队列
        *
        * @return
        */
       @Bean
       public Queue myQueue() {
           return new Queue("0721");
       }
   }
   ​
   

2. demo

   @Service
   @Slf4j
   public class RabbitMQService {
   ​
       private static final String QUEUE_NAME = "0721";
   ​
       @Autowired
       private RabbitTemplate rabbitTemplate;
   ​
       /**
        * 发送消息
        *
        * @param order
        */
       public void sendOrder(Order order) {
   ​
           rabbitTemplate.convertAndSend(QUEUE_NAME, order);
           log.info("已发送订单：{}", order);
       }
   ​
       /**
        * 拉取模式
        *
        * @return
        */
       public Order receiveOrder() {
   ​
           Order order = (Order) rabbitTemplate.receiveAndConvert(QUEUE_NAME);
           log.info("收到订单：{}", order);
           return order;
       }
   ​
       /**
        * 推送模式
        *
        * @param order
        */
       @RabbitListener(queues = QUEUE_NAME)
       public void receiveOrder(Order order) {
   ​
           log.info("收到订单：{}", order);
       }
   ​
   }