如何让 Spring RabbitMQ 创建一个新的 Queue？

Question

在我使用 rabbit-mq 的（有限）经验中，如果您为尚不存在的队列创建新的侦听器，则会自动创建该队列。我正在尝试将 Spring AMQP 项目与 rabbit-mq 一起使用来设置侦听器，但我收到了一个错误。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>

我在我的 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'}

来自 AMQP 的类似错误：

 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.

从堆栈跟踪来看，队列似乎是在“被动”模式下创建的——任何人都可以指出我将如何创建不使用被动模式的队列，这样我就看不到这个错误吗？还是我错过了其他东西？

原文由 eric 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

似乎解决我的问题的方法是添加管理员。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>

原文由 eric 发布，翻译遵循 CC BY-SA 3.0 许可协议

Answer 2

较旧的线程，但这在 Google 上的排名仍然很高，所以这里有一些较新的信息：

2015-11-23

自带有 Spring-Messaging 和 Spring-Amqp 1.4.5.RELEASE 和 Spring-Rabbit 1.4.5.RELEASE 的 Spring 4.2.x 以来，通过 @Configuration 类的一些注释声明交换、队列和绑定变得非常简单：

 @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.*");
    }
}

一些资源和文档可以提供帮助：

1. 弹簧注解
2. 为队列/绑定支持声明/配置 RabbitMQ
3. 直接交换绑定（当路由键无关紧要时）

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，因为您可以在侦听器上声明完整的绑定！

原文由 Jaymes Bearden 发布，翻译遵循 CC BY-SA 3.0 许可协议