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MQSeries.net Forum Index » IBM MQ Java / JMS » error in getting messages from mq

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ajsc
PostPosted: Thu May 27, 2004 5:00 pm    Post subject: error in getting messages from mq Reply with quote

Newbie

Joined: 11 Apr 2004
Posts: 3
I have a simple code that gets a message from a remote mq :

StringBuffer msgText = new StringBuffer();
MQGetMessageOptions gmo = new MQGetMessageOptions();
gmo.options = MQC.MQGMO_NO_SYNCPOINT + MQC.MQGMO_NO_WAIT;
gmo.waitInterval = 0;

MQMessage retrievedMessage = new MQMessage();

try {
retrievedMessage.messageId = mqMessage.messageId;
inBoundQueue.get(retrievedMessage, gmo, MAX_MESSAGE_SIZE);
msgText.append(retrievedMessage.readString(MAX_MESSAGE_SIZE));
} catch (MQException ex) {
System.out.println("Error::::->reason code was 2033");
}
} catch (java.io.IOException ex) {
ex.printStackTrace();
}

if (msgText.length() != 0)
return (msgText.toString());
else
return ("nothing");

}

_____________________

it seems the error occurs at
inBoundQueue.get(retrievedMessage, gmo, MAX_MESSAGE_SIZE);
which throws an IOException error.

The error message is :

[28/05/04 8:40:28:664 CST] 3f4cb5f0 SystemErr R java.io.EOFException
[28/05/04 8:40:28:664 CST] 3f4cb5f0 SystemErr R at com.ibm.mq.MQMessage.readConvertedString(MQMessage.java:1943)
[28/05/04 8:40:28:664 CST] 3f4cb5f0 SystemErr R at com.ibm.mq.MQMessage.readString(MQMessage.java:960)
[28/05/04 8:40:28:664 CST] 3f4cb5f0 SystemErr R at com.pegi.accs.xpedite.MQAccessGet.readMessage(MQAccessGet.java:335)
[28/05/04 8:40:28:664 CST] 3f4cb5f0 SystemErr R at com.pegi.accs.xpedite.MQAccessGet.getMessage(MQAccessGet.java:205)
[28/05/04 8:40:28:664 CST] 3f4cb5f0 SystemErr R at test.ejb.TestBeanBean.testMq(TestBeanBean.java:67)
[28/05/04 8:40:28:664 CST] 3f4cb5f0 SystemErr R at test.ejb.EJSLocalStatelessTestBean_602aae6f.testMq(EJSLocalStatelessTestBean_602aae6f.java:23)
[28/05/04 8:40:28:664 CST] 3f4cb5f0 SystemErr R at java.lang.reflect.Method.invoke(Native Method)
[28/05/04 8:40:28:664 CST] 3f4cb5f0 SystemErr R at com.ibm.etools.utc.model.ReflectionMethodModel.invoke(ReflectionMethodModel.java:6
[28/05/04 8:40:28:664 CST] 3f4cb5f0 SystemErr R at com.ibm.etools.utc.servlet.InvokeServlet.invoke(InvokeServlet.java:110)
[28/05/04 8:40:28:664 CST] 3f4cb5f0 SystemErr R at com.ibm.etools.utc.servlet.InvokeServlet.doPost(InvokeServlet.java:352)
[28/05/04 8:40:28:664 CST] 3f4cb5f0 SystemErr R at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
[28/05/04 8:40:28:680 CST] 3f4cb5f0 SystemErr R at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:948)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:530)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:176)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:79)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:201)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:182)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:610)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:435)
[28/05/04 8:40:28:711 CST] 3f4cb5f0 SystemErr R at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:593)

_____________________

please help....

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RogerLacroix
PostPosted: Thu May 27, 2004 8:37 pm    Post subject: Reply with quote

Jedi Knight

Joined: 15 May 2001
Posts: 3264
Location: London, ON Canada
Hi,

Yes, that seems right. I don't know what you have MAX_MESSAGE_SIZE set to but obvious the ACTUAL message size is smaller than MAX_MESSAGE_SIZE.

Why don't you change the code to:
Code:
StringBuffer msgText = new StringBuffer();
MQGetMessageOptions gmo = new MQGetMessageOptions();
gmo.options = MQC.MQGMO_NO_SYNCPOINT + MQC.MQGMO_NO_WAIT;
gmo.waitInterval = 0;

MQMessage retrievedMessage = new MQMessage();

try {
   retrievedMessage.messageId = mqMessage.messageId;
   inBoundQueue.get(retrievedMessage, gmo);
   int msgLength = retrievedMessage.getMessageLength();

   msgText.append(retrievedMessage.readString(msgLength));
}
catch (MQException ex) {
   System.out.println("Error::::->reason code was 2033");
}
catch (java.io.IOException ex) {
   ex.printStackTrace();
}

if (msgText.length() != 0)
   return (msgText.toString());
else
   return ("nothing");

Regards,
Roger Lacroix
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ajsc
PostPosted: Thu May 27, 2004 9:27 pm    Post subject: Reply with quote

Newbie

Joined: 11 Apr 2004
Posts: 3
Thanks Roger Lacroix =) it worked! =) thank you so much.
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