log4j warning

[Simeon Shi]

Dear all,
When i start my tomcat(5.0.12), i found some log4j:warn appeared refer to my project. The log appeared under the console looks like the following.

INFO: Processing Context configuration file URL file :mrgreen: :\jakarta-tomcat-5.0.12\conf\Catalina\localhost\myproject.xml
log4j:WARN No appenders could be found for logger (org.apache.commons.digester.Digester).
log4j:WARN Please initialize the log4j system properly. 

Do anybody know what's wrong with it?Thanks in advance.

[David Harkness]

Originally posted by simeon:
When i start my tomcat(5.0.12), i found some log4j:warn appeared refer to my project. The log appeared under the console looks like the following.

Log4j looks for a log4j.properties file in the current directory or reachable via the classpath when you first make a call to it, unless you've configured it separately. I'm not familiar with Tomcat anymore, so I can't say where you should put that file, but that is what's missing.

[Simeon Shi]

i think that i do put the log4j.xml (i use the xml configuration file instead) and my other log operations run correctly. However, i just checked my configuration file, in which the ConsoleAppender'pattern starts with the "%-4r" but not the "log4j:" in the tomcat console.
By the way, i read tomcat's documents carefully and find that tomcat do not use log4j or common-logging but its own log utilities instead which is configured in the "server.xml" file under the directory 'conf'.
So the output i mentioned "log4j:WARN" is neither tomcat's output nor my web application's output. Where did it come from? Could anybody help me?
Thanks! The following is my log4j.xml's snippet for the ConsoleAppender.

<appender name="StdOut" class="org.apache.log4j.ConsoleAppender">
  <layout class="org.apache.log4j.PatternLayout">
    <param name="ConversionPattern" value="%-4r [%t] %-5p %c %x - %m%n"/>
  </layout>
</appender>

[ January 09, 2004: Message edited by: simeon ]