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| UnsupportedEncodingException cp437 - Fixed. |
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| damianharvey |
 Posted: Thu Mar 18, 2004 5:20 pm Post subject: UnsupportedEncodingException cp437 - Fixed. |
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Acolyte
Joined: 05 Aug 2003
Posts: 59
Location: Sydney, Australia
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A little tip for all those as stoopid as myself.
I have 2 machines : 1 is my laptop running XP with Java 1.4.2_04 and the other is a server running W2k also with Java 1.4.2_04.
I have some code which does a very basic GET from a Queue :
MQMessage mqmessage = new MQMessage();
MQGetMessageOptions mqgetmessageoptions = new MQGetMessageOptions();
m_queue.get(mqmessage, mqgetmessageoptions);
s = mqmessage.readString(mqmessage.getMessageLength());
On my laptop this runs fine. On the server I get :
java.io.UnsupportedEncodingException: Cp437 when it gets to the readString() method.
I tried adding i18n.jar and even rt.jar to the classpath to no avail. I tried changing the JVM (went from 1.4.1. to 1.4.2). It wasn't until a recalled that the MQClient libs were designed for Java 1.3 that I tried that. Installed the 1.3.1_10 JRE and started the class with the Java from that.
What do you know? It worked.
I still think it's odd that it worked with the same JVM on XP. |
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| EddieA |
| Posted: Fri Mar 19, 2004 7:00 am Post subject: |
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Jedi
Joined: 28 Jun 2001
Posts: 2453
Location: Los Angeles
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What version of the MQ Java classes are you running.
I had a 'long' discussion with someone at Hursley about this a couple of years ago, and it turned out to be a JVM problem. I thought they did a 'work around' in a later version of MQ Java.
Cheers,
_________________
Eddie Atherton
IBM Certified Solution Developer - WebSphere Message Broker V6.1
IBM Certified Solution Developer - WebSphere Message Broker V7.0 |
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| damianharvey |
| Posted: Sun Mar 21, 2004 2:39 pm Post subject: |
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Acolyte
Joined: 05 Aug 2003
Posts: 59
Location: Sydney, Australia
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| Whatever comes with MQ 5.3 - the DLL's have version 5.304.0.3269 |
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| dnaren |
| Posted: Sat Mar 27, 2004 11:36 pm Post subject: |
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Apprentice
Joined: 10 Aug 2001
Posts: 45
Location: Charlotte, NC
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Wrong solution.. You shouldn't say "Fixed" in the title. 
Going back to Java 1.3 is a not a solution to your problem. I used MQ Java classes that came with MA88 (for MQ 5.2) and MQ 5.3 with Java 1.4.* with no problems at all (on Windows 2000 and XP).
437 is the standard encoding supported by Windows. If you use MQ Explorer and "post a test message" to any queue, your message is encoded with 437.
your call
mqmessage.readString(mqmessage.getMessageLength()) is using the default/native encoding (which is 437 on Windows) of the queue manager to interpret the bytes and create a String. |
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| damianharvey |
| Posted: Sun Mar 28, 2004 3:17 pm Post subject: |
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Acolyte
Joined: 05 Aug 2003
Posts: 59
Location: Sydney, Australia
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| Ok, however if anyone has the same problem that I had, I can recomend going back to Java 1.3 to stop the problem occurring (if not fixing it??). |
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