如何让Spring RabbitMQ创建一个新的Queue？

Question

在使用rabbit-mq的(有限)经验中,如果为尚不存在的队列创建新的侦听器,则会自动创建队列.我正在尝试使用带有rabbit-mq的Spring AMQP项目来设置一个监听器,而我正在收到错误.这是我的xml配置:

<rabbit:connection-factory id="rabbitConnectionFactory" host="172.16.45.1" username="test" password="password" />

<rabbit:listener-container connection-factory="rabbitConnectionFactory"  >
    <rabbit:listener ref="testQueueListener" queue-names="test" />
</rabbit:listener-container>

<bean id="testQueueListener" class="com.levelsbeyond.rabbit.TestQueueListener"> 
</bean>

我在RabbitMq日志中得到了这个:

=ERROR REPORT==== 3-May-2013::23:17:24 ===
connection <0.1652.0>, channel 1 - soft error:
{amqp_error,not_found,"no queue 'test' in vhost '/'",'queue.declare'}

和AMQP类似的错误:

2013-05-03 23:17:24,059 ERROR [org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer] (SimpleAsyncTaskExecutor-1) - Consumer received fatal exception on startup
org.springframework.amqp.rabbit.listener.FatalListenerStartupException: Cannot prepare queue for listener. Either the queue doesn't exist or the broker will not allow us to use it.

从堆栈跟踪看来,队列是以"被动"模式创建的 - 任何人都可以指出我如何创建不使用被动模式的队列,所以我没有看到这个错误？还是我错过了别的什么？

Answer 1

较旧的帖子,但这仍然在谷歌上显得相当高,所以这里有一些新的信息:

2015年11月23日

从Spring 4.2.x开始使用Spring-Messaging和Spring-Amqp 1.4.5.RELEASE和Spring-Rabbit 1.4.5.RELEASE,通过@Configuration类声明交换,队列和绑定变得非常简单了一些注释:

@EnableRabbit
@Configuration
@PropertySources({
    @PropertySource("classpath:rabbitMq.properties")
})
public class RabbitMqConfig {    
    private static final Logger logger = LoggerFactory.getLogger(RabbitMqConfig.class);

    @Value("${rabbitmq.host}")
    private String host;

    @Value("${rabbitmq.port:5672}")
    private int port;

    @Value("${rabbitmq.username}")
    private String username;

    @Value("${rabbitmq.password}")
    private String password;

    @Bean
    public ConnectionFactory connectionFactory() {
        CachingConnectionFactory connectionFactory = new CachingConnectionFactory(host, port);
        connectionFactory.setUsername(username);
        connectionFactory.setPassword(password);

        logger.info("Creating connection factory with: " + username + "@" + host + ":" + port);

        return connectionFactory;
    }

    /**
     * Required for executing adminstration functions against an AMQP Broker
     */
    @Bean
    public AmqpAdmin amqpAdmin() {
        return new RabbitAdmin(connectionFactory());
    }

    /**
     * This queue will be declared. This means it will be created if it does not exist. Once declared, you can do something
     * like the following:
     * 
     * @RabbitListener(queues = "#{@myDurableQueue}")
     * @Transactional
     * public void handleMyDurableQueueMessage(CustomDurableDto myMessage) {
     *    // Anything you want! This can also return a non-void which will queue it back in to the queue attached to @RabbitListener
     * }
     */
    @Bean
    public Queue myDurableQueue() {
        // This queue has the following properties:
        // name: my_durable
        // durable: true
        // exclusive: false
        // auto_delete: false
        return new Queue("my_durable", true, false, false);
    }

    /**
     * The following is a complete declaration of an exchange, a queue and a exchange-queue binding
     */
    @Bean
    public TopicExchange emailExchange() {
        return new TopicExchange("email", true, false);
    }

    @Bean
    public Queue inboundEmailQueue() {
        return new Queue("email_inbound", true, false, false);
    }

    @Bean
    public Binding inboundEmailExchangeBinding() {
        // Important part is the routing key -- this is just an example
        return BindingBuilder.bind(inboundEmailQueue()).to(emailExchange()).with("from.*");
    }
}

一些来源和文档可以帮助:

1. 春天注释
2. 声明/配置RabbitMQ以获得队列/绑定支持
3. 直接交换绑定(当路由密钥无关紧要时)

注意:看起来我错过了一个版本 - 从Spring AMQP 1.5开始,事情变得更加简单,因为你可以在听众声明完整的绑定!

Answer 2

似乎解决我的问题的是添加管理员.这是我的xml:

<rabbit:listener-container connection-factory="rabbitConnectionFactory"  >
    <rabbit:listener ref="orderQueueListener" queues="test.order" />
</rabbit:listener-container>

<rabbit:queue name="test.order"></rabbit:queue>

<rabbit:admin id="amqpAdmin" connection-factory="rabbitConnectionFactory"/>

<bean id="orderQueueListener" class="com.levelsbeyond.rabbit.OrderQueueListener">   
</bean>

Answer 3

从Spring Boot 2.1.6和Spring AMQP 2.1.7 开始，如果队列不存在，您可以在启动期间创建队列：

@Component
public class QueueConfig {

    private AmqpAdmin amqpAdmin;

    public QueueConfig(AmqpAdmin amqpAdmin) {
        this.amqpAdmin = amqpAdmin;
    }

    @PostConstruct
    public void createQueues() {
        amqpAdmin.declareQueue(new Queue("queue_one", true));
        amqpAdmin.declareQueue(new Queue("queue_two", true));
    }
}