Troubles with commons-logging and Log4J

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Troubles with commons-logging and Log4J

Troubles with commons-logging and Log4J

2006-03-17 - By Clemens Eisserer

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Reply: 1 2

Hello,

for evaluation I use the embedded version of tomcat (that one that can
be started via ant) and I have major troubles using Log4J in my
project.

I would prefer having my own copy of Log4J on the lib-directory, so I
would not have to worry about older/newer versions installed on
various application servers I plan to deploy to.
However if I copy Log4J.jar into the lib-directory of my webapp's lib'
dir tomcat refuses even to start up, throwing the exception at the end
of this mail.
I wonder why commons-loggin bothers at all about Log4J if its
contained in the library directory of the webapplication - those
classes should have no effect on the server as whole at all, right?

I already read some articles which mention how stupid commons-logging
is, how broken its design is and so on but no real answer how I could
slove my problem and reach my goals without modifying the libaries
installed on the server.

I would be really happy about any answer!

Thank you in advance, lg Clemens

[jmx-service] org.apache.commons.logging.LogConfigurationException

:
org.apache.commons.logging.LogConfigurationException

: No suitable Log
constructor [Ljava.lang.Class;@(protected) for
org.apache.commons.logging.impl.Log4JLogger

Source code of org.apache.commons.logging.impl.Log4JLogger

(Caused by
java.lang.NoClassDefFoundError

Source code of java.lang.NoClassDefFoundError

: org/apache/log4j/Category) (Caused by
org.apache.commons.logging.LogConfigurationException

: No suitable Log
constructor [Ljava.lang.Class;@(protected) for
org.apache.commons.logging.impl.Log4JLogger

(Caused by
java.lang.NoClassDefFoundError

: org/apache/log4j/Category))
[jmx-service] at
org.apache.commons.logging.impl.LogFactoryImpl

Source code of org.apache.commons.logging.impl.LogFactoryImpl

(LogFactoryImpl.java
:543)
[jmx-service] at
org.apache.commons.logging.impl.LogFactoryImpl

(LogFactoryImpl.java
:235)

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