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| Setting Message ID in Java |
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| MQNewBaby |
 Posted: Mon Oct 19, 2009 5:18 pm Post subject: Correlation ID |
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Newbie
Joined: 19 Oct 2009
Posts: 1
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Hi All,
I have string let say String str = "4023COSTO" and i want to set this as Message ID, how do i do that? how to convert this string to hexBinary.
My Problem
I have two application one in WESB in which I can set only hextBinary to Message ID and another application is setting response CorrelationID in Java like this
MQMessage requestMessage = new MQMessage();
String tempCorrelationId = new String("4023COST");
requestMessage.correlationId = tempCorrelationId.getBytes();
but the WESB is not picking up the response. Do i need do any conversion in Java Code? Please help me. |
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| Vitor |
| Posted: Mon Oct 19, 2009 5:28 pm Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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I know very little about Java, but 3 things occur to me:
- the correlation id should be set to the message id of the request rather than some string as best design practice
- you can't assign a string to the id fields because they're binary not string as you say, so they may not match on machines with different code pages (and I've no idea how you do that in Java)
- even if the reponse is for some reason that string, and the string value matches, the reply won't be found because that string is too short to be an id.
Go back, read the documentation and rethink what you're doing.
_________________
Honesty is the best policy.
Insanity is the best defence. |
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| fjb_saper |
| Posted: Mon Oct 19, 2009 9:59 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| meetgaurav |
| Posted: Wed Oct 21, 2009 1:31 am Post subject: |
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Voyager
Joined: 08 Sep 2008
Posts: 94
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New Baby try this conversion logic
This may help you out.
[code] public static byte[] toByteArray(String hexStr)
{
byte msgId[] = new byte[hexStr.length()/2];
for(int i=0; i<(hexStr.length()/2); i++)
{
byte firstNibble = Byte.parseByte(hexStr.substring(2*i,2*i+1),16);
byte secondNibble = Byte.parseByte(hexStr.substring(2*i+1,2*i+2),16);
int finalByte = (secondNibble) | (firstNibble << 4 );
msgId[i] = (byte) finalByte;
}
return msgId;
}
[/code] |
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| Vitor |
| Posted: Wed Oct 21, 2009 4:04 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| meetgaurav wrote: |
New Baby try this conversion logic
This may help you out.
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Or may cause further problems - I refer to previous discussions on the perils of creating your own message id in this thread and others.
Though I'm sure it's a very nice piece of Java for converting a string! 
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Insanity is the best defence. |
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