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| zvikah |
 Posted: Tue Sep 07, 2004 7:49 am Post subject: writeString and readUtf |
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Newbie
Joined: 07 Sep 2004
Posts: 2
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hello ,
i need to read from a queue that the writer use the writeUTF method and in my side i read from the mqmessage using readString method (i use this method because other app use writeString)
how can i convert form UTF to String
thanks
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Zvika |
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| JLRowe |
| Posted: Tue Sep 07, 2004 10:12 am Post subject: |
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Yatiri
Joined: 25 May 2002
Posts: 664
Location: South East London
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| Check the javadoc, both return a String. One reads the length from the first 2 bytes of the message buffer, the other takes the length as an argument. |
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| zvikah |
| Posted: Wed Sep 08, 2004 2:04 am Post subject: i get EOFException |
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Newbie
Joined: 07 Sep 2004
Posts: 2
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hi !
i get EOFException using readUTF on message that written in writeString method
it's work fine when i use readString on message written in writeUTF
thanks,
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Zvika |
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| JLRowe |
| Posted: Wed Sep 08, 2004 4:34 am Post subject: |
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Yatiri
Joined: 25 May 2002
Posts: 664
Location: South East London
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| Why don't you keep it simple and use readUTF, the writers obviously intended the strings to be variable length. As I said before, both methods return a String, they just determine the length in different ways. |
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| bower5932 |
| Posted: Wed Sep 08, 2004 5:55 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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The readUTF is probably getting an EOFexception because the first two bytes of the string are NOT a length. It is using part of your data as the length and it is incorrect.
I agree with jlrowe. If you are using writeUTF to write, then stick with readUTF to read. |
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| techno |
| Posted: Thu Oct 20, 2005 1:36 pm Post subject: |
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Chevalier
Joined: 22 Jan 2003
Posts: 429
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I have a sender, jms based, sending TextMessage ("Hello world"). On Receiver side, it is MQ Base Java code. I am trying to read the content using readUTF/readString methods. Throws EOFException. How should I be reading the message body?
This body, I guess, shall have RFH2 header prepended to body of the text-message ("Hello world").
If my non-JMS/base-java receiver has to get just the text (without rfh2 header), what should be done? Any link is also fine.
Thanks. |
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| EddieA |
| Posted: Thu Oct 20, 2005 2:21 pm Post subject: |
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Jedi
Joined: 28 Jun 2001
Posts: 2453
Location: Los Angeles
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| Quote: |
| How should I be reading the message body |
If it was written with writeString, then use readString. Or if writeUTF was used, read it with readUTF. You can't mix them.
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| what should be done |
Send the message without the RFH2. Use the "Search" button to find one of the many posts that explain how to do this. Or read the manual.
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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| techno |
| Posted: Fri Oct 21, 2005 10:37 am Post subject: |
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Chevalier
Joined: 22 Jan 2003
Posts: 429
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Thank you. It involves changing the code on Sender side. Is it possible to remove the RFH header while receiving the message instead of making changes on Sender side?
I am printing the format and the body of the message while receiving it.
Format: MQHRF2
Body:
RFH ☻└☺♦╕MQSTR ♦╕ <mcd><Msd>jms_text</Msd></mcd> P<jms><Dst>queue:///REQUEST.
QUEUE</Dst><Tms>1129918079879</Tms><Dlv>2</Dlv></jms> <usr><prop1>val1</prop1></
usr> Hello
What I want to do is:
Read format and read the body of the message;
while reading the body of the message, read the format again. In this case- MQSTR and go to the real content - Hello; read the properties too.
Is there any java sample supplied with MQ to do above?
Thanks for any help |
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| EddieA |
| Posted: Fri Oct 21, 2005 11:15 am Post subject: |
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Jedi
Joined: 28 Jun 2001
Posts: 2453
Location: Los Angeles
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| Quote: |
| Is there any java sample supplied with MQ to do above |
No. But there are a few posts here, including one of mine, that show you how to read the RFH2 in a Java application. Just "throw away" the RFH2 fields, one by one, until you get to the real payload.
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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| fjb_saper |
| Posted: Sat Oct 22, 2005 6:49 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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If you need to skip the RFH using java, don't use the base classes use JMS and you won't have to worry about it being there or missing....  |
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