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From "Steve Cohen" <>
Subject RE: Commons logging question
Date Wed, 01 May 2002 20:33:46 GMT
I got this problem by trying to run in a servlet under JRun 3.0.  In that environment, I found
that you have to put commons-logging.jar and the log4j jar into the JRun server's lib directory,
not the web app's lib.  That solved that for me.  Whether that would be remedied by your fix,
I'll leave for others to decide.  Class loading gives me a headache.

-----Original Message-----
From: Juozas Baliuka []
Sent: Wednesday, May 01, 2002 3:29 PM
To: Jakarta Commons Developers List
Subject: Re: Commons logging question

This is the same problem as in "ClassCastException raised in newFactory()
method when starting from JUnit test"
Log factory must have "getLog(Class clasz, ClassLoader loader)" it is
useless without this
----- Original Message -----
From: "Steve Cohen" <>
To: <>
Sent: Wednesday, May 01, 2002 6:48 PM
Subject: Commons logging question

Here are two newbie questions:
I am trying to implement a new system using Commons logging wrapped around

1. I get this exception which puzzles me:

at org.apache.commons.logging.LogFactory.newFactory(
at org.apache.commons.logging.LogFactory.getFactory(
at org.apache.commons.logging.LogFactory.getLog(

If the system is finding org.apache.commons.logging.LogFactory, why can't it
find org.apache.commons.logging.impl.LogFactoryImpl?  They're in the same
jar which I've simply downloaded from the site.

2. Though puzzled by #1, even if I wasn't getting that exception, something
would be wrong, since I thought I had set up to not use the default
mechanism.  It should have found log4j first.  I used the second method
described in the docs under
"Choosing A LogFactory Implementation".  Evidently I've done something
wrong.  The file

exists and contains the line

This seems like it ought to work but doesn't.

The documentation doesn't say which JAR this belongs in.  I assumed it meant
the war file for my application.  Is this wrong?

Steve Cohen
Sr. Software Engineer
Ignite Sports, Inc.

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