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| writeUTF and readFully |
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| csdenis |
 Posted: Mon Dec 02, 2002 3:23 am Post subject: writeUTF and readFully |
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Novice
Joined: 06 Oct 2002
Posts: 24
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Dear all,
I've got a problem about writeUTF method.
I use writeUTF to write an MQ message in UTF-8 format. When I try to read it back, I use readUTF and the result is perfect. However, when I use readfully to read it into an byte array and contruct it into string using
String sth = new String(myByteArray, "UTF8")
the first 2 bytes of the string are strange characters. I know it is the length in UTF-8, but can I got the exact string using writeUTF and readFully?
Thanks to all. |
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| nimconsult |
| Posted: Tue Dec 03, 2002 12:00 am Post subject: |
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Master
Joined: 22 May 2002
Posts: 268
Location: NIMCONSULT - Belgium
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The readFully() reads the message data, including string length and string contents. The String(byte[], String) constructor does not expect a string length at the beginning of the bytes array.
One possible option is to call m.skipBytes(2) before the m.readFully(...).
My test sample:
| Code: |
byte[] b = new byte[m.getDataLength() - 2];
m.skipBytes(2);
m.readFully(b);
String s = new String(b, "UTF8");
System.out.println(s); |
Of course readUTF is easier to use than the previous code sample. But this sample answers your question.
Nicolas
_________________
Nicolas Maréchal
Senior Architect - Partner
NIMCONSULT Software Architecture Services (Belgium)
http://www.nimconsult.be |
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