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From "James Strachan" <>
Subject Re: Spring JmsTemplate receive() returns null with messages in Queue
Date Wed, 22 Oct 2008 08:25:00 GMT
How many consumers do you have active? (See JMX). See these FAQ entries...

2008/7/11 Yohan Liyanage <>:
> Hi,
> I tried to use JmsTemplate's receive() method for synchronous consumption of
> a Queue, but the method returns 'null', even when there are messages in the
> queue.
> The JmsTemplate (with a time out of two seconds) successfully receives first
> messages, but after a while, it is not able to consume messages from the
> queue, and returns null (timeout), even when there are messages in the Queue
> (I checked through JMX).
> Then I tried using RECEIVE_TIMEOUT_INDEFINITE_WAIT, and with that, I was
> able to consume about 7,8 messages (out of 50) and again, it fails returning
> null. Then I tried out with NO_WAIT and this time, I was only able to
> consume first message. It fails returning nulls.
> I tried this with CachingConnectionFactory / SingleConnectionFactory and
> also with direct ActiveMQ  ConnectionFactory. But the result is same. The
> application consumes several messages, and then starts to return null, while
> there are messages left in queue.
> I am using Spring 2.5.5 with ActiveMQ 5.1.
> Any suggestions are deeply appreciated.
> Thanks
> PS: I tried this with asynchronous message consumption using MessageListener
> and DefaultMessageListenerContainer, and it works as expected without this
> issue.
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