带有JMSTimestamp

时间:2019-03-13 15:02:07

标签: java jms selector ibm-mq

我用以下选择器创建了一个MQ接收器:

String selector = "JMSTimestamp BETWEEN 1446297200000 AND 1552479882777"

运行代码时,选择器正在拾取超出这些范围的消息,而没有拾取实际上应该被拾取的消息。 日志片段如下所示:

**lines****
--------- Receiving messages from MQ.
--------- Created consumer with Message selector JMSTimestamp BETWEEN 1446297200000 AND 1552479882777.
--------- Receiving messages.
--------- Message type is text.
--------- JMSTimestamp is 1552480011190.
--------- JMSTimestamp with format Mar 13,2019 13:26:51 .
--------- Processing Message.
***lines***

正如我们在日志中看到的那样,消息的JMSTimeStamp大于选择器上限1552479882777中提到的消息。

选择器有什么问题,应该怎么写?请帮助进行分析。

完整代码如下:

      @Cleanup
      QueueConnection connection = null;
      @Cleanup
      QueueSession session = null;
      @Cleanup
      MessageConsumer receiver = null;
      @Cleanup
      InitialContext ctx = null;
      ctx = new InitialContext();
      QueueConnectionFactory cf = (QueueConnectionFactory) ctx.lookup(JMS_FACTORY);
      connection = (QueueConnection) cf.createQueueConnection();
      session = (QueueSession) connection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
      log.info("Receiving Message from MQ");
      Queue replyQueue = (Queue) session.createQueue(REPLY_QUEUE);
      //getting time till 3 minutes ago
      Long threeMinutesAgo = System.currentTimeMillis() - 180000;
      // below expression is to select messages which are sitting in queue for more than 3 minutes,
      String messageSelector = "JMSTimestamp BETWEEN 1446297200000 AND " + threeMinutesAgo;
      receiver = (MessageConsumer) session.createConsumer(replyQueue, messageSelector);
      log.info("created Consumer with message selector {}", messageSelector);
      connection.start();
      while (true) {
        log.info("------------receiving response--------------");
        Message asyncMessage = receiver.receiveNoWait();
        if (asyncMessage instanceof TextMessage) {
          log.info("Message type is text");
          log.info("JMSTimeStamp is {}", String.valueOf(asyncMessage.getJMSTimestamp()));
          log.info("JMSTimeStamp with format {}", sdf.format(new Date(asyncMessage.getJMSTimestamp())));
          log.info("ThreeMinutesAgo with format {}", sdf.format(new Date(threeMinutesAgo)));
          log.info("Difference is {}", String.valueOf(System.currentTimeMillis() - asyncMessage.getJMSTimestamp()));
          log.info("Difference with format {}",
              sdf.format(new Date(System.currentTimeMillis() - asyncMessage.getJMSTimestamp())));
          String replyString = ((TextMessage) asyncMessage).getText();
          asyncMessage.acknowledge();
          processIntoText(replyString);
        } if (asyncMessage == null) {
          log.error("Queue is now empty for specified messages or null. ");
          break;
        }
      }
    } catch (JMSException | JAXBException | ParserConfigurationException | SAXException | NamingException e) {
      log.error("Error in messaging {}", e);
    }

0 个答案:

没有答案