在RabbitMQ发布时给出不正确的(不存在)队列名称

Question

我正在使用ayncrabbittemplate发布消息。出版时给出不正确的(不存在的(队列名称 - 它默默删除了消息。

我尝试在Ayncrabbittemplate上启用"确认"one_answers"任务"，并添加了所需的回调方法：

@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;
}

和回调方法为：

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

，如文档中所讨论的，您必须在连接工厂启用返回的消息。

发送不会抛出异常，但无法寄出的消息将返回到 ReturnCallback(如果强制性是正确的话(。

确认未发送无法交付的消息。仅当经纪人中存在某种问题时，才会得到负面的确认。它们很少。