RabbitMQ消息优先级队列不工作

我在eclipse中运行优先级队列，第一次得到正确答案时遇到了一个问题。另一次，我在队列中又添加了一条消息，但这次我得到了不同的结果

public static void main(String[] argv) throws Exception {
     ConnectionFactory factory = new ConnectionFactory();
        Connection conn = factory.newConnection();
        Channel ch = conn.createChannel();
        Map<String, Object> args = new HashMap<String, Object>();
        args.put("x-max-priority", 10);
        ch.queueDeclare(QUEUE_UPDATE, true, false, false, args);

         publish(ch, 141);   
         publish(ch, 250);   

        final CountDownLatch latch = new CountDownLatch(2);
        ch.basicConsume(QUEUE_UPDATE, true, new DefaultConsumer(ch) {
            public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties, byte[] body) throws IOException {
                System.out.println("Received " + new String(body));
                latch.countDown();
            }
        });

        latch.await();
        conn.close();           
        System.out.println("Finished");
}

private static void publish(Channel ch, int priority) throws Exception {
     BasicProperties props = MessageProperties.PERSISTENT_BASIC.builder().priority(priority).build();
     String body = QUEUE_UPDATE + " message with priority " + priority ;
     ch.basicPublish("", QUEUE_UPDATE, props, body.getBytes());         
}

又添加了一条队列消息

         publish(ch, 141);    
         publish(ch, 250);   
         publish(ch, 110); // newly added

预期产量

Received update-queue message with priority 250
Received update-queue message with priority 141
Received update-queue message with priority 110
Finished

实际产量

Received update-queue message with priority 141
Received update-queue message with priority 250
Received update-queue message with priority 110
Finished

---

怎么会这样？我做错了什么吗？

我遇到了同样的问题。对我有效的是定义一个由定义的限制，例如

channel.basicQos（1）。
如果不设置此限制，消息将在到达代理时传递给消费者，因此它们永远不会使用优先级进行排序

当您设置一个下限时，代理一次发送的邮件不会超过此限制，因此在发送前会对邮件进行排序。
删除队列并尝试使用以下命令：
args.put（“x-max-priority”，250）对于偶然发现这个问题的C#开发人员，请参阅。简而言之，“推送api”不尊重优先级。非常感谢Toresan！它的工作100%，如果我可以，我会标记为正确的答案！我试过了，但没有成功，@GeorgeAnisimov你是怎么做到的？你添加了什么代码
Received update-queue message with priority 141
Received update-queue message with priority 250
Received update-queue message with priority 110
Finished