Hi,
Does anyone have a link to a FAQ or HOW-TO for using commons-logging
with Tomcat 4.1.x please? I've read the obvious ones at apache.org and
sun.com, and tried all sorts before having to back out and go to a
wrapper around ServletContext.log (which doesn't give me levels and
files etc). I was hoping to use the JDK14 Logger FileLogger.
I'd appreciate a sanity check on the below - thanks for your time.
I have 4 co-operating web apps, each of which extends their Controller
servlet from a class in a common jar file (deployed in WEB-INF/lib with
each app).
I would like to be able to 'tune' (outside the .war file) the logging
levels, filenames etc.
Modifying the $JAVA_HOME/jre/lib/logging.properties file seems to make
no difference (and seems as if it would be 'global').
I tried loading a log properties file using loadResourceAsStream in the
Controller super-class - which seems better (in that it does some of the
logging, but I can't seem to get it to log 'finer' than INFO). This also
creates multiple log files (following the pattern xxxx%u.log as per JDK
1.4 logging). I am happy to provide the properties file-name in the
web.xml as an init parameter - seems sound.
Class Loading etc. :
For singletons (e.g. the Controller servlet super-class instances), I
would assume that initialising the log as a static variable would result
in different Factories for each app as it is a different class-loader.
When I have multiple instances of a class, however, (I'm using
Command/Action pattern) should I use a static variable (write contention
causes the multiple files mentioned above?)? Is there a distinction
between logging to multiple instances of the FileLogger as opposed to a
single instance? Is there a reason to optimise the calls to get a Logger
from the Factory - or is it OK to just grab one as and when?
Sorry for the length.
Regards
tim
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