RabbitMq使用

用于异步处理,日志处理,流量削峰,应用解耦

引用依赖

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

参数配制

默认配制
spring:
 rabbitmq:
   host: localhost
   port: 5672
   username: guest
   password: guest

发送消息

public class MqSend {
    @Autowired
    private AmqpTemplate amqpTemplate;

     /**
     * 发送Mq测试消息
     */
    public void send(){
        amqpTemplate.convertAndSend("myQueue","now "+new Date());
    }

    /**
     * 发送数据供应商分组Mq测试消息
     */
    public void sendOrder(){
        amqpTemplate.convertAndSend("myQueue","computer","now "+new Date());
    }

}

接收消息

@Slf4j
@Component
public class MqReceiver {

    //1. 接收手动创建的消息,需先手动创建myQueue队列名
    /*@RabbitListener(queues = "myQueue")
    public void processtest(String message){
        log.info("MQReceiver: {}",message);
    }*/

    //2. 自动创建队列
    // @RabbitListener(queuesToDeclare = @Queue("myQueue"))

    //3. 自动创建, Exchange和Queue绑定
    @RabbitListener(bindings = @QueueBinding(
            value = @Queue("myQueue"),
            exchange = @Exchange("myExchange")
    ))
    public void process(String message) {
        log.info("MqReceiver: {}", message);
    }
     /**
     * 数码供应商服务 接收分组消息
     * @param message
     */
    @RabbitListener(bindings = @QueueBinding(
            exchange = @Exchange("myOrder"),
            key = "computer",
            value = @Queue("computerOrder")
    ))
    public void processComputer(String message) {
        log.info("computer MqReceiver: {}", message);
    }

    /**
     * 水果供应商服务 接收分组消息
     * @param message
     */
    @RabbitListener(bindings = @QueueBinding(
            exchange = @Exchange("myOrder"),
            key = "fruit",
            value = @Queue("fruitOrder")
    ))
    public void processFruit(String message) {
        log.info("fruit MqReceiver: {}", message);
    }
}