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| Problem when getting from a remote queue... |
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| atoms |
 Posted: Mon Apr 03, 2006 8:05 am Post subject: Problem when getting from a remote queue... |
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Apprentice
Joined: 10 Jun 2005
Posts: 27
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I'm trying to do a "non-destructive" get from a queue and write the results to a file within a simple Java program. It all works fine when I run this program against a local queue manager set up on my machine. But when I connect to a remote machine and get a message from a queue, all i get is mumbo-jumbo, similar to this:
???????@@@?????????@@@@@@@@@@@%???????????????????@??
Here is the part of my code where I'm doing the actual parsing of each byte in the received message:
StringBuffer buf=new StringBuffer();
for(int i=0; i<retrievedMessage.getMessageLength(); i++){
Byte readCharacter=new Byte(retrievedMessage.readByte());
buf.append((char)readCharacter.intValue());
}
As you can see, it's not very complicated but for some reason it doesn't work when I connect remotely. If you have a clue why, please let me know! Thanks! |
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| mvic |
| Posted: Mon Apr 03, 2006 8:50 am Post subject: Re: Problem when getting from a remote queue... |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| atoms wrote: |
| for some reason it doesn't work when I connect remotely. |
Could it be that the app putting the the queue on the remote queue manager is producing text in a different CCSID? If it's a text message you might need to add MQGMO_CONVERT on your get options. (It's not clear that you are dealing with text, as I see lots of byte operations in the sample code you posted... do you expect bytes and text characters to be equivalent in the message you're getting?)
Also, it may help us to see the problem if you post a bit more of the code - eg. including the connect, open, and get. |
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| atoms |
| Posted: Mon Apr 03, 2006 12:12 pm Post subject: |
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Apprentice
Joined: 10 Jun 2005
Posts: 27
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Thank's for your reply! It is possible that the queue manager from which I'm getting the message is set up with a different CCSID, I need to check that out. The messages I'm dealing with are text messages. Perhaps I'm doing things in an unnecessarily complex way, I'm only a newbie... =)
Here's a bit more code:
private static final int openOptions=MQC.MQOO_BROWSE;
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MQEnvironment.hostname="xxx.xxx.xxx.xxx";
MQEnvironment.channel="my.client.channel";
qmgr=new MQQueueManger(QUEUE_MANAGER);
queue=qmgr.accessQueue(QUEUE_NAME,openOptions);
MQMessage retrievedMessage=new MQMessage();
MQGetMessageOptions messageOptions=new MQGetMessageOptions();
messageOptions.options=MQC.MQGMO_BROWSE_FIRST;
queue.get(retrievedMessage, messageOptions);
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| mvic |
| Posted: Mon Apr 03, 2006 12:32 pm Post subject: |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| atoms wrote: |
| It is possible that the queue manager from which I'm getting the message is set up with a different CCSID, I need to check that out. |
What's relevant is the content of the message. Look at the putting app, not the queue manager.
| Quote: |
The messages I'm dealing with are text messages.
...
messageOptions.options=MQC.MQGMO_BROWSE_FIRST; |
What happens if you try the above with
| Code: |
| messageOptions.options=MQC.MQGMO_BROWSE_FIRST | MQC.MQGMO_CONVERT; |
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| atoms |
| Posted: Mon Apr 03, 2006 10:37 pm Post subject: |
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Apprentice
Joined: 10 Jun 2005
Posts: 27
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That's brilliant, now it works! Many thanks!
So, the problem was that the sending app produced the message in a different CCSID? And this message option tells the queue manager to "translate" tha message according to my preferences (CodedCharSetId, Encoding) when I'm doing the get...? |
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| mvic |
| Posted: Tue Apr 04, 2006 12:12 am Post subject: |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| atoms wrote: |
| That's brilliant, now it works! Many thanks! |
Good news 
| Quote: |
| So, the problem was that the sending app produced the message in a different CCSID? |
It seems this is the case, yes.
| Quote: |
| And this message option tells the queue manager to "translate" tha message according to my preferences (CodedCharSetId, Encoding) when I'm doing the get...? |
Exactly, yes.
See http://publib.boulder.ibm.com/infocenter/wmqv6/v6r0/topic/com.ibm.mq.csqzak.doc/convp.htm |
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