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From Giacomo Pati <>
Subject Issues with logging
Date Mon, 30 Sep 2002 15:47:22 GMT

Hi all

We've dicovered an issue with the current commons-logging code (1.0.2).

We have a servlet depoyed into a Servlet engine which has a log4j.jar in
its common classpath but our servlet (using commons-logging) need to used
logkit. We tried to use the system property
"org.apache.commons.logging.Log" set to
"org.apache.commons.logging.impl.LogKitLogger" as suggested with no luck.

So, we looked into the code and found that the constructor of
org.apache.commons.logging.impl.LogFactoryImpl is doing the following:

    public LogFactoryImpl() {

and the guessConfig does:

    protected void guessConfig() {
        if( isLog4JAvailable() ) {
            proxyFactory = null;
            try {
                Class proxyClass=
"org.apache.commons.logging.impl.Log4jFactory" );
                if (proxyClass != null) {
                    proxyFactory = (LogFactory)proxyClass.newInstance();
            } catch( Throwable t ) {
                ; // ignore
        // other logger specific initialization
        // ...

Admittedly if have no idea what the proxyFactory is used for but for us
this means commons-logging does not respect the system property suggested
to use any other logging kit if there is a log4j in the classpath

Is this intentional?

By commenting the 'guessConfig()' call from the constructor we could solve
our problems but I'd really like to hear your oppinions about it.



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