Comments on: Log4j Tutorial: Additivity – what and why?

By: Ian Fessey

Ian Fessey — Tue, 08 May 2012 08:27:39 +0000

Excellent article, well written and easy to understand.

By: salish

salish — Sun, 06 May 2012 05:53:16 +0000

HI,
veera ,
Good ,and well explained ,thanks for your valuable blog.Are you familiar with slf4j ,can the same be done for slf4j.
if yes please help me by explaining that.i’m working in spring mvc is there any way for logging in spring ,while checking the log we are getting lots and lots of spring log while using slf4j.what to avoid spring loggings.

thanks in advance

By: Siby Mathew

Siby Mathew — Wed, 28 Mar 2012 13:28:41 +0000

Thanks a lot Veera ! I have been trying a lot to skip the console logging done in my parent log4j.xml class.. Your blog helped a lot…thanks again !!

Siby

By: bala

bala — Wed, 28 Mar 2012 13:11:44 +0000

excellent work !!!

i have a requirement, hopefully someone will show me a way. i searched a lot, couldnt find a solution

in my application i have 200 packages. in one package , in some classes i have log stements in TRACE level. i need to have a file appender to log only these TRACE level statements coming from this one package. i dont want to log DEBUG, INFO, ERROR, FATAL messages in this log file. i want just TRACE. how can i do it ?

i tried like this. created a category and set the threshold to TRACE. then i tried to suppress the 199 packages to FATAL. But thats lot of work listing 199 package names. unfortunately there is no wild card support in package names in log4j

thanks
bala

By: Bhaskar

Bhaskar — Wed, 21 Mar 2012 10:03:07 +0000

Veera,
Actually i solved the issue and the problem was : two different log files populated with same content. The issue was compatibility problem with jboss 5.1.0ga such that the filter class used for logging was not compatible to the given version of jboss.Thus, once i changed the filter class the issue get resolved.

By: Veera

Veera — Mon, 19 Mar 2012 16:18:14 +0000

Am not able to understand the issue here with the information provided… Can you mail me more details and I’ll see what I can do..

By: Bhaskar

Bhaskar — Mon, 19 Mar 2012 11:52:27 +0000

Hi Veera,

I am struggling with the following issues:
1. There are two sars such that one depend upon other
2. There is common logger for appending logs to the log files of both of these sars say for : com.broadridge.logger.BRLogger

3. Here MQM_SERVICE depend upon BPRIOR
4. The problem is : I am getting the log files of both of these sars exactly same.

Thanks, for your quick reply in advance!!

By: Veera

Veera — Tue, 13 Mar 2012 06:39:02 +0000

welcome.

By: Arun

Arun — Tue, 13 Mar 2012 06:30:48 +0000

Hi veera,

Excellent explanation… Understood the concept very easily….
Keep writing on more topics…

Thanks.

By: Mathias

Mathias — Wed, 15 Feb 2012 09:54:01 +0000

Hello,
for anyone wondering what ‘category’ is used for because in his files only ‘logger’ is used:
http://hanuska.blogspot.com/2007/02/log4j-logger-vs-category.html

(In short: category is deprecated, logger is a subclass of category. Use logger.)
Great article, though!
Thanks – Mathias