If your Appender inherits from a WriterAppender then it tacks the Throwable on the end of the message anyway (because it already has somewhere sensible to put it and the PatternLayout doesn't deal with it). If you don't want to do this and you want the Throwable info in your Appender (NB: costly to collect) call LoggingEvent.getThrowableStrRep() and handle it however you like.
Regards, Michael Erskine. > -----Original Message----- > From: Alexander Spitzer [mailto:aspit...@gmail.com] > Sent: 28 September 2009 20:58 > To: Log4J Users List > Subject: Re: How can I write a custom appender to supports Throwable as a > second parameter? > > hmmm.. so does this mean that if I want to define my own pattern > layout, it is not possible? > > -alex spitzer --------------------------------------------------------------------- To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org For additional commands, e-mail: log4j-user-h...@logging.apache.org
