Question

我正在尝试启动一个Spring Boot应用程序，该应用程序具有由此配置类配置的RabbitMQ：

@Configuration
public class RabbitConfig implements RabbitListenerConfigurer {

    public static final String AMQP_EXCHANGE_NAME = "test-queue";

    @Bean
    public Exchange accessExchange() {
        return new DirectExchange(AMQP_EXCHANGE_NAME);
    }

    @Bean
    public Binding binding(Queue queue, DirectExchange exchange) {
        return BindingBuilder.bind(queue).to(exchange).with(AMQP_EXCHANGE_NAME);
    }

    @Bean
    public Jackson2JsonMessageConverter producerJackson2MessageConverter() {
        return new Jackson2JsonMessageConverter();
    }

    @Bean
    public MappingJackson2MessageConverter consumerJackson2MessageConverter() {
        return new MappingJackson2MessageConverter();
    }

    @Bean
    public RabbitTemplate rabbitTemplate(final ConnectionFactory connectionFactory) {
        final RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);
        rabbitTemplate.setMessageConverter(producerJackson2MessageConverter());
        return rabbitTemplate;
    }

    @Bean
    public DefaultMessageHandlerMethodFactory messageHandlerMethodFactory() {
        DefaultMessageHandlerMethodFactory factory = new DefaultMessageHandlerMethodFactory();
        factory.setMessageConverter(consumerJackson2MessageConverter());
        return factory;
    }

    @Override
    public void configureRabbitListeners(RabbitListenerEndpointRegistrar registrar) {
        registrar.setMessageHandlerMethodFactory(messageHandlerMethodFactory());
    }

但我收到错误no queue 'test-queue' in vhost '/'：

Caused by: com.rabbitmq.client.ShutdownSignalException: channel error; protocol method: #method<channel.close>(reply-code=404, reply-text=NOT_FOUND - no queue 'test-queue' in vhost '/', class-id=50, method-id=10)
    at com.rabbitmq.client.impl.ChannelN.asyncShutdown(ChannelN.java:509) ~[amqp-client-4.2.0.jar:4.2.0]
    at com.rabbitmq.client.impl.ChannelN.processAsync(ChannelN.java:340) ~[amqp-client-4.2.0.jar:4.2.0]
    at com.rabbitmq.client.impl.AMQChannel.handleCompleteInboundCommand(AMQChannel.java:162) ~[amqp-client-4.2.0.jar:4.2.0]
    at com.rabbitmq.client.impl.AMQChannel.handleFrame(AMQChannel.java:109) ~[amqp-client-4.2.0.jar:4.2.0]
    at com.rabbitmq.client.impl.AMQConnection.readFrame(AMQConnection.java:643) ~[amqp-client-4.2.0.jar:4.2.0]
    at com.rabbitmq.client.impl.AMQConnection.access$300(AMQConnection.java:47) ~[amqp-client-4.2.0.jar:4.2.0]
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:581) ~[amqp-client-4.2.0.jar:4.2.0]
    ... 1 common frames omitted

只有在定义了以下侦听器时才会出现此问题：

    @Transactional
    @RabbitListener(queues = RabbitConfig.AMQP_EXCHANGE_NAME)
    public void doSomething(TestDTO dto) {
        ...
    }

似乎我正在尝试从队列中消耗，但是队列中没有创建。如果我通过RabbitMQ管理界面创建队列，则不会发生错误。

有没有办法自动创建此队列，所以我没有收到此错误？

Answer 1

你没有显示你的Queue豆。您的配置似乎也没有RabbitAdmin（自动声明队列，交换，绑定所需）。

请参阅Configuring the Broker。

Answer 2

@Autowired
private AmqpAdmin amqpAdmin;

@Bean
public Binding binding(Queue queue, DirectExchange exchange) {
    // automatically create this queue, so you do not get this error.
    amqpAdmin.declareQueue(queue); 
    return BindingBuilder.bind(queue).to(exchange).with(AMQP_EXCHANGE_NAME);
}

应用程序启动时vhost中没有队列错误

2 个答案: