I also convert the msgId into a string, as Dennis suggested.
If interested, in Java, I use the 1st method below to convert the byte array to a string, and the 2nd to convert back from a string.
Regards,
Alan
/**
* Converts a array of bytes into hexadecimal string representation.
*
* @param byteArray a byte array
* @return a <code>String</code>.
*/
public static String toHexString(byte[] byteArray) {
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < byteArray.length; i++) {
buffer.append(Integer.toHexString((byteArray[i] >> 4) & 0xf));
buffer.append(Integer.toHexString((byteArray[i]) & 0xf));
}
return buffer.toString();
}
/**
* Converts a hex string to a byte array.
* Permits upper or lower case hex.
*
* @param hexString String must have even number of characters.
* and be formed only of digits 0-9 A-F or
* a-f. No spaces, minus or plus signs.
* @return corresponding byte array.
*/
public static byte[] fromHexString(String hexString) {
int stringLength = hexString.length();
if ((stringLength & 0x1) != 0) {
throw new IllegalArgumentException();
}
byte[] byteArray = new byte[stringLength / 2];
for (int i = 0, j = 0; i < stringLength; i += 2, j++) {
int high = charToNibble(hexString.charAt(i));
int low = charToNibble(hexString.charAt(i + 1));
byteArray[j] = (byte) ((high << 4) | low);
}
return byteArray;
}
/**
* Converts a single char to corresponding nibble.
*
* @param c char to convert. must be 0-9 a-f A-F, no
* spaces, plus or minus signs.
* @return corresponding integer
*/
private static int charToNibble(char c) {
if ('0' <= c && c <= '9') {
return c - '0';
} else if ('a' <= c && c <= 'f') {
return c - 'a' + 0xa;
} else if ('A' <= c && c <= 'F') {
return c - 'A' + 0xa;
} else {
throw new IllegalArgumentException("Invalid hex character: " + c);
}
}
| "Miller, Dennis" <[EMAIL PROTECTED]>
Sent by: MQSeries List <[EMAIL PROTECTED]> 21/11/2002 06:47 AM
|
To: [EMAIL PROTECTED] cc: Subject: Re: MQMQ MsgID - valid characters |
You should not pass the msgid in XML without converting it to a string
first. You could do like JMS and convert each half-byte to the single text
character used in hex notation, i.e. "0"-"F". Of course, msgid is then
transported in 48 bytes, which needs to be reversed at the other end.
> -----Original Message-----
> From: Pope, Ben [SMTP:[EMAIL PROTECTED]]
> Sent: Wednesday, November 20, 2002 8:36 AM
> To: [EMAIL PROTECTED]
> Subject: MQMQ MsgID - valid characters
>
>
> I have a situation where I need to pass the MsgId contents as part of an
> XML message.
> What I've found in the docs describes how the field in constructed by the
> queue manger
> but it is described as being simply "a byte field". Are there any details
> as to what byte
> range could be used? Specifically, codes between 0x00 and 0x20 are
> considered invalid
> XML and if they can be included in the MsgId field then I need to account
> for that
> possibility.
>
> Thanks, Ben
>
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