在RabbitMQ中发布时给出错误的（不存在的）队列名称

Question

我正在使用AyncRabbitTemplate发布消息。 发布时提供了错误的（不存在的）队列名称-它会静默删除该消息。

我尝试在AyncRabbitTemplate上启用“确认”和“任务”，并添加了所需的回调方法，如下所示：

@Bean
AsyncRabbitTemplate template() {
    RabbitTemplate rabbit = rabbitTemplate();
    rabbit.setChannelTransacted(true);         //to throw error when channel shuts down in case of incorrect exchange names

    AsyncRabbitTemplate asyncRabbitTemplate = new AsyncRabbitTemplate(rabbit, rpcReplyMessageListenerContainer(connectionFactory()));
    asyncRabbitTemplate.setEnableConfirms(true);
    asyncRabbitTemplate.setMandatory(true);         //if the message cannot be delivered to a queue an AmqpMessageReturnedException will be thrown
    return asyncRabbitTemplate;
}

@Bean
public SimpleMessageListenerContainer rpcReplyMessageListenerContainer(ConnectionFactory connectionFactory) {
    SimpleMessageListenerContainer simpleMessageListenerContainer = new SimpleMessageListenerContainer(connectionFactory);
    simpleMessageListenerContainer.setQueueNames(Constants.REPLY_QUEUE);
    simpleMessageListenerContainer.setTaskExecutor(Executors.newCachedThreadPool());
    simpleMessageListenerContainer.setAcknowledgeMode(AcknowledgeMode.AUTO);
    return simpleMessageListenerContainer;
}

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

@Bean
public ConnectionFactory connectionFactory() {
    CachingConnectionFactory connectionFactory = new CachingConnectionFactory("localhost");
    return connectionFactory;
}

而回调方法为：

RabbitConverterFuture<String> future = this.asyncRabbitTemplate.convertSendAndReceive("",Constants.SNS_QUEUE, "This is the request message ",new MessagePostProcessor() {

        @Override
        public Message postProcessMessage(Message message) {
            message.getMessageProperties().setTimestamp(new Date());
            message.getMessageProperties().setMessageId(UUID.randomUUID().toString());
            return message;
        }
    });


    ListenableFuture<Boolean> future2 = future.getConfirm();
    future2.addCallback(new ListenableFutureCallback<Boolean>() {

        @Override
        public void onSuccess(Boolean result) {
            System.out.println("Publish Result " + result);

        }

        @Override
        public void onFailure(Throwable ex) {
            System.out.println("Publish Failed: " + ex);

        }
    });

Answer 1

如文档中所述，您必须在连接工厂上启用返回的消息。

发送不会引发异常，但是无法传递的消息将返回到ReturnCallback （如果必须为true）。

对于无法发送的邮件，不会发送确认。 仅当经纪人存在某种问题时，才会收到否定确认； 他们是罕见的。