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POJMS and ThreadPool problem?
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  1. POJMS and ThreadPool problem?
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    copied!<p>I want that jms receives a message when one thread has handled a message (threadPool submits a callable). The messages are received by a master thread. Which way is better below:</p> <p>I use spring 3.0.5 :</p> <pre><code>ApplicationContext context = new ClassPathXmlApplicationContext( "application-context.xml"); jmsTemplate = (JmsTemplate) context.getBean("jmsTemplate"); destination = (Destination) context.getBean("destination"); _log4j.debug("ThreadSize in xml\t" + appConfig.getThumbCreatorThreadSize()); </code></pre> <p>in master thread Way 1: </p> <pre><code>while (countFlag &lt; 0) { try { TextMessage msg = (TextMessage) jmsTemplate .receive(destination); // prehandle ,then give to sub workers. if (msg != null) { _log4j.debug("JMSMessageID:\t" + msg.getJMSMessageID() + "\t" + msg.getText()); IConsumer thumbConsumerImpl = null; thumbConsumerImpl = new ThumbConsumerTaskImpl(msg); Future&lt;List&lt;ThumbCreatorInfo&gt;&gt; result = threadPool .submit((Callable&lt;List&lt;ThumbCreatorInfo&gt;&gt;) thumbConsumerImpl); } } catch (IllegalArgumentException e) { _log4j.warn(e.getMessage(), e); } catch (JMSException e) { _log4j.error("Please check the queue server!JMSException!", e); } catch (Exception e) { _log4j.error("", e); } } </code></pre> <p>in master thread Way 2:</p> <pre><code> TextMessage msg = (TextMessage) jmsTemplate.receive(destination); do { try { // prehandle ,then give to sub workers. if (msg != null) { _log4j.debug("JMSMessageID:\t" + msg.getJMSMessageID() + "\t" + msg.getText()); IConsumer thumbConsumerImpl = null; thumbConsumerImpl = new ThumbConsumerTaskImpl(msg); Future&lt;List&lt;ThumbCreatorInfo&gt;&gt; result = threadPool .submit((Callable&lt;List&lt;ThumbCreatorInfo&gt;&gt;) thumbConsumerImpl); } msg = (TextMessage) jmsTemplate.receive(destination); } catch (IllegalArgumentException e) { _log4j.warn(e.getMessage(), e); } catch (JMSException e) { _log4j.error("Please check the queue server!JMSException!", e); } catch (Exception e) { _log4j.error("", e); } } while (countFlag &lt; 0); </code></pre>
 

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