In special circumstances you might want each line of the stacktrace to be
full log lines (i.e., with loglevel, MDC, threadname, etc). In this case you can
use Throwable.getStackTrace() to get the individual line, and then do something like
public static void logError(Logger log, Throwable ex, int limit) {
if (log.isDebugEnabled()) {
StackTraceElement[] ste = ex.getStackTrace();
for (int i = 0; i < ste.length; i++) {
if (i == limit) {
return;
}
if (i==0) {
log.debug(ste[i]);
}
else {
log.debug("\t" + ste[i]);
}
}
}
}
I use this when I need to see a stacktrace when I "grep" through the log
file for a paricular thread, say.
On Fri, Aug 29, 2003 at 10:28:54AM -0400, Shapira, Yoav wrote:
>
> Howdy,
> try {
> String a = null;
> System.out.println(a.length());
> } catch (Exception e) {
> logger.error("Error printing string: ", e);
> }
>
> Note the comma, i.e. the error(Object, Throwable) version of the API.
> All the levels (logger.info(...), logger.warn(...), etc) have a version
> of their signature with a Throwable argument.
>
> Yoav Shapira
> Millennium ChemInformatics
>
>
> >-----Original Message-----
> >From: Andreas Bothner [ MTN - Innovation Centre ]
> >[mailto:[EMAIL PROTECTED]
> >Sent: Friday, August 29, 2003 9:55 AM
> >To: Log4J Users List
> >Subject: how do I log an exception stacktrace
> >
> >Hi,
> >
> >I apologize if this is a stupid question, but how would I log out an
> >exception's stacktrace using logger.debug() ?
> >
> >Regards,
> >Andreas Bothner
> >Systems Integrator
> >
> >
> >NOTE: This e-mail message is subject to the MTN Group disclaimer see
> >http://www.mtn.co.za/email_disclaimer.asp
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