Multiple consumer did not receive the message

[BlueRhino]

Hi everone:
   I used multiple consumer  to receive message from a queue .But It did not
work correctly.These is message in the queue,But the consumer did not get
it.
<http://activemq.2283324.n4.nabble.com/file/n4670263/%E6%9C%AA%E5%91%BD%E5%90%8D.jpg>
 
<http://activemq.2283324.n4.nabble.com/file/n4670263/%E6%9C%AA%E5%91%BD%E5%90%8D1.jpg>
 
And my code is this:
while (true)
                {
                        log.info("GetResMsg listenling.");
                        try
                        {
                                getSession();
                                message = (MapMessage) consumer.receive();
                                jsonStr = message.getString(mqMessageName);
                                session.commit();
                        }
                        catch (JMSException e)
                        {
                                log.warn(e.getMessage());
                                getSession();
                        }
                        catch (Exception e)
                        {
                                log.warn(e.getMessage());
                                getSession();
                        }
                        try
                        {
                                Thread.sleep(1000);
                        }
                        catch (InterruptedException e)
                        {
                                log.warn(e.getMessage());
                        }
                }



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