How to log the full stacktrace?

Question

I'm using log4j to log unhandled exceptions. But how can I log the stacktrace?

I tried the following:

Logger.getRootLogger().fatal(e);

Result: 2013-11-05 14:25:07,078 FATAL root: java.lang.NullPointerException BUT no stacktrace! Why?

have you tried to search http://stackoverflow.com/questions/4347797/how-to-send-a-stacktrace-to-log4j — Roman-Stop RU aggression in UA, Nov 05 '13 at 13:30

score 1 · Accepted Answer · answered Nov 05 '13 at 13:30

1

Try with:

Logger.getRootLogger().fatal(e, e);

answered Nov 05 '13 at 13:30

Paul Vargas

ty so much! I completely overlooked that `e` must be supplied as 2nd param in order to log the full stacktrace. – membersound Nov 05 '13 at 13:32
1

You're welcome. After working many hours or days at work, we lose ourselves. – Paul Vargas Nov 05 '13 at 13:40

score 0 · Answer 2 · answered Nov 05 '13 at 13:31

0

field element

private static final Logger LOGGER = LogFactory.getLogger(YourClazz.class);

in your methods, simply log e

LOGGER.error("There was an error {}",e);

and it will print the full stacktrace

answered Nov 05 '13 at 13:31

RamonBoza

1

For this, the Original Poster need slf4j. Otherwise, compile error. – Paul Vargas Nov 05 '13 at 13:33

2 Answers2