I think the correct syntax would be
%X{userId}
See the PatternLayout javadoc page for exact details on %X.
-Mark
> -----Original Message-----
> From: Benoit Voisin [mailto:[EMAIL PROTECTED]]
> Sent: Monday, May 20, 2002 11:54 PM
> To: 'Log4J Users List'
> Subject: RE: Defining layout and using objects to log information.
>
>
> I think the easiest way is to use the MDC :
>
> Any place in your code when you know the userId, call :
> MDC.put("userId",userId);
>
> You can then access it in the Appender :
>
> event.getMDC("userId");
>
> If you use a PatternLayout, include
> "x{userId}" in the pattern (I'm am not 100% sure about this
> last syntax)
>
> Ben
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]
> Sent: 20 May 2002 18:19
> To: [EMAIL PROTECTED]
> Subject: Defining layout and using objects to log information.
>
>
>
>
>
>
> Hi
>
> I have just started using log4j.
> I need some information / guidance on how to log information into a
> database.
> I want to log my own information like user id, transaction id
> etc. which I
> am
> storing in an object.
> Is there any way I can pass objects to the Appender which can log the
> information held in that object.
>
> Aashish
>
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