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From d...@cocoon.apache.org
Subject [Cocoon Wiki] New: CocoonLog4J
Date Wed, 13 Oct 2004 12:58:59 GMT
   Date: 2004-10-13T05:58:59
   Editor: HelmaVanDerLinden <h.vanderlinden@mi.unimaas.nl>
   Wiki: Cocoon Wiki
   Page: CocoonLog4J
   URL: http://wiki.apache.org/cocoon/CocoonLog4J

   no comment

New Page:

How to use Log4J instead of Avalon Logkit for Cocoon.

This is written based on the 2.1.6-DEV version in SVN at 2004/10/13, so things might be different
before or after this version.

1. '''add this to web.xml''' or, if it is already in comments, uncomment it:

{{{
  <init-param>
        <param-name>logger-class</param-name>
        <param-value>org.apache.avalon.excalibur.logger.Log4J!LoggerManager</param-value>
  </init-param>
}}}    

2. '''add log4j.jar''' in WEB-INF/lib if needed

3. '''create WEB-INF/classes/log4j.properties''' to setup logging, or uncomment the following
lines in web.xml to define the location of log4j.xconf (i.e. the XML version of the log4j.properties
file). A sample log4j.xconf is already provided in WEB-INF.

{{{
      <init-param>
        <param-name>log4j-config</param-name>
        <param-value>/WEB-INF/log4j.xconf</param-value>
      </init-param>
}}}

4. (added by BertrandDelacretaz:) Another useful logging trick is to '''use log4j for the
output of ant''' as 
well, by setting these options on the ant command line:
{{{
   -listener org.apache.tools.ant.listener.Log4jListener
   -Dlog4j.configuration=file:/path-to-log4j-config
}}}
''This is very useful for crazy folk like me who start their production 
systems via ant ;-)''



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