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将多个@rabbitlistener bean添加到容器工厂的优雅方法

spring-rabbitmq spring-amqp rabbitmq spring-mvc java

Prabhu R · 技术社区 · 7 年前

这是我的 @Configuration

   @Bean
    public AmqpAdmin amqpAdmin()
    {
        RabbitAdmin rabbitAdmin = new RabbitAdmin(connectionFactory());

        DirectExchange dirExchange = new DirectExchange("evtExchange", true,
                false);

        rabbitAdmin.declareExchange(dirExchange);
        rabbitAdmin.declareQueue(processQueue);
        Binding processBinding = BindingBuilder.bind(processQueue)
                .to(dirExchange).with("rkey.process");
        rabbitAdmin.declareBinding(processBinding);

        return rabbitAdmin;
    }

    @Bean
    public RabbitTemplate rabbitTemplate()
    {
        RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory());
        return rabbitTemplate;
    }

    @Bean
    public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory()
    {
        SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
        factory.setConnectionFactory(connectionFactory());
        SimpleMessageListenerContainer container = factory
                .createListenerContainer();
        factory.setConcurrentConsumers(50);
        factory.setMaxConcurrentConsumers(100);
        container.setStartConsumerMinInterval(3000);
        container.setQueues(processQueue);
        factory.setAdviceChain(retryInterceptor());
        return factory;
    }

    @Bean
    public RetryOperationsInterceptor retryInterceptor()
    {
        return RetryInterceptorBuilder.stateless().maxAttempts(5)
                .backOffOptions(1000, 2.0, 10000).recoverer(new RejectAndDontRequeueRecoverer()).build();
    }

    @Bean
    public ProcessQueueListener processListener()
    {
        return new ProcessQueueListener();
    }

    @Bean
    public ProcessQueueListener processListener2()
    {
        return new ProcessQueueListener();
    }

    @Bean
    public ProcessQueueListener processListener3()
    {
        return new ProcessQueueListener();
    }

这里是 @RabbitListener 班

@RabbitListener(containerFactory = "rabbitListenerContainerFactory", queues = "process")
public class ProcessQueueListener
{

    public ProcessQueueListener()
    {
    }

    @RabbitHandler
    void receiveMessage(String message)
    {
        // doSomething
    }

}

只有当我实例化 processListener() , processListener2() 和 processListener3() 另外,我开始在进程队列的rabbitmq管理中看到多个使用者,并且每个侦听器处理消息,否则,尽管指定了 setConcurrentConsumers()

有没有一种优雅的方法可以根据需要声明多个监听器,根据需要增加和减少。或声明多个 @Bean 是唯一的选择吗?还是我做错了什么?

1 回复 | 直到 7 年前

Gary Russell 7 年前

您使用的是什么版本?

我刚复制了你们的集装箱工厂,它对我来说很好(2.1.3)。

btw,从2.0版开始,您可以添加 concurrency 到 @RabbitListener 它将覆盖容器工厂中的任何值。

/**
 * Set the concurrency of the listener container for this listener. Overrides the
 * default set by the listener container factory. Maps to the concurrency setting of
 * the container type.
 * <p>For a
 * {@link org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer
 * SimpleMessageListenerContainer} if this value is a simple integer, it sets a fixed
 * number of consumers in the {@code concurrentConsumers} property. If it is a string
 * with the form {@code "m-n"}, the {@code concurrentConsumers} is set to {@code m}
 * and the {@code maxConcurrentConsumers} is set to {@code n}.
 * <p>For a
 * {@link org.springframework.amqp.rabbit.listener.DirectMessageListenerContainer
 * DirectMessageListenerContainer} it sets the {@code consumersPerQueue} property.
 * @return the concurrency.
 * @since 2.0
 */
String concurrency() default "";

也不相关,但你不应该这样做 rabbitAdmin.declareExchange(dirExchange) 在bean声明中—在应用程序上下文生命周期中连接到rabbitmq太早了。将交换、队列和绑定添加为 @Bean S和管理员将自动查找并声明它们。