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| How to find out the length of JMSMessage? |
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| eswarnv |
 Posted: Thu Mar 07, 2002 7:24 am Post subject: |
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Voyager
Joined: 20 Dec 2001
Posts: 88
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Hi All,
I am retrieving a message from MQ-Series by using JMS Client. I am getting that message as JMSBytesMessage. I wanted to find out length of the message. How do i get length?
Thanks
eswar |
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| kolban |
| Posted: Thu Mar 07, 2002 9:11 am Post subject: |
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Grand Master
Joined: 22 May 2001
Posts: 1072
Location: Fort Worth, TX, USA
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| Believe it or not, you can't (easily). You must use the readBytes() method and pass in a byte array that is as large as the largest message you are prepared to receive. The return from readBytes() is the actual number of bytes in the message. You can then create a new byte array of this size and copy the bytes to this new array. |
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| EddieA |
| Posted: Thu Mar 07, 2002 10:57 am Post subject: |
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Jedi
Joined: 28 Jun 2001
Posts: 2453
Location: Los Angeles
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Or maybe modify the following to do what you want:
| Code: |
byte [] lotsaBytes = new byte [4096];
// Grab the 1st part of the message, if any
int messageLen = ((BytesMessage) inMessage).readBytes(lotsaBytes);;
while (messageLen != -1) {
// Copy it to the outgoing
outMessage.writeBytes(lotsaBytes, 0, messageLen);
// Extract the next section of message content
messageLen = ((BytesMessage) inMessage).readBytes(lotsaBytes);
}
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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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