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From "Jacob Kjome" <h...@visi.com>
Subject Re: Log4J doesn't work at all
Date Tue, 10 Apr 2012 17:25:07 GMT
On Tue, 10 Apr 2012 18:43:21 +0200
 tommmmmm <tommmmmm@gmail.com> wrote:
> There is no commons-logging-api.jar in my classpath anywhere. There is
> commons-logging-1.1.1.jar (there are 2 of them actually).
> There is only one log4j in my classpath and it is log4j-1.2.16.jar

Are the jars binary identical?  That is, are they exactly the same size with 
exactly the same contents?  What size are they?  52k would indicate it is the 
API jar (bad) by another name, 60k would indicate it really is the complete 
commons-logging.jar (good).  Why do you have two of them on the classpath 

Are you running on the command line or under an App Server like Tomcat?  If 
under an app server (provide name/version), do you put all your lib 
dependencies, including log4j.jar and commons-logging.jar, in WEB-INF/lib or 
elsewhere?  If elsewhere, please detail.

> I highly doubt a problem to be a classpath problem, because then the
> logger.debug("some
> test message"); would produce nothing, and it works well.

That you can log directly to Log4j is good, but is of no consequence as it 
relates to HttpClient logging.  The cause of your issue is almost certainly 
commons-logging, not Log4j, because HttpClient logs directly to 
commons-logging.  It is the job of commons-logging to direct this logging to 
Log4j which it is, apparently, failing to do.  The reason I need you to verify 
that you are not, in fact, using the commons-logging API jar is that it has no 
Log4j binding and, thus, would explain the lack of Log4j output.  If you are, 
indeed, using the complete commons-logging.jar, containing Log4j bindings, 
then we need to look for other causes.  And, BTW, these things are almost 
**always** classpath/classloading issues.

> Tom


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