如何使用Spring引导

Question

发布扇出交换上的RabbitMQ消息，我有以下的代码，使用fanout exchange发布消息到RabbitMQ队列。 exchange正在创建，但消息不能在RabbitMQ队列中看到。我也没有看到任何错误。

BasicApplication.java

@SpringBootApplication 
public class BasicApplication { 

    public static final String QUEUE_NAME_1 = "helloworld.fanout.q1"; 
    public static final String QUEUE_NAME_2 = "helloworld.fanout.q2"; 
    public static final String EXCHANGE_NAME = "helloworld.fanout.x"; 

    //here the message ==> xchange ==> queue1, queue2 
    @Bean 
    public List<Declarable> fanoutBindings() { 
     Queue fanoutQueue1 = new Queue(QUEUE_NAME_1, false); 
     Queue fanoutQueue2 = new Queue(QUEUE_NAME_2, false); 
     FanoutExchange fanoutExchange = new FanoutExchange(EXCHANGE_NAME); 
     return Arrays.asList(
       fanoutQueue1, 
       fanoutQueue2, 
       fanoutExchange, 
       bind(fanoutQueue1).to(fanoutExchange), 
       BindingBuilder.bind(fanoutQueue2).to(fanoutExchange)); 
    } 

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

} 

Producer.java

@Component 
public class Producer implements CommandLineRunner { 

    @Autowired 
    private RabbitTemplate rabbitTemplate; 

    @Override 
    public void run(String... args) throws Exception { 
     this.rabbitTemplate.convertAndSend(EXCHANGE_NAME, "Hello World !"); 
    } 

} 

Answer 1

您使用了错误的方法convertAndSend;该方法的第一个参数是routingKey。

使用this.rabbitTemplate.convertAndSend(EXCHANGE_NAME, "", "Hello World !");。