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Servlet Logging in Tomcat

Posted on 2005-05-13
Medium Priority
Last Modified: 2006-11-18
I want to log information about my servlet each time it is called.  I'm not sure how to set this up with Tomcat.  As best I can tell, I need to add the following element,

      <!-- Global logger unless overridden at lower levels -->
      <Logger className="org.apache.catalina.logger.FileLogger"
              prefix="servlet." suffix=".log" timestamp="true" />

somewhere in my sever.xml file.  I got this information from the following address: http://minaret.biz/tips/tomcatLogging.html.  If this is true, then where exactly should in place this element in server.xml?

This has me a little confused as it conflicts with the information I read at, http://publib.boulder.ibm.com/iseries/v5r2/ic2924/info/rzaie/rzaietomcat.htm.  I believe it implies that a log file called, servlet.log, will automatically be created.

Which is true?  Is either true?  Or are they both true but different approaches?

Lastly, once I've told Tomcat about logging my servlet, will do some automatic logging of sevlet information or will have to tell it exactly what to log?  And if I tell it what to log, do I just use the following method?

httpServletRequest.getSession().getServletContext().log("Some message");

Thank you, in advance, for help on this issue.
Question by:HycelTaylor
1 Comment
LVL 19

Accepted Solution

ramazanyich earned 1000 total points
ID: 13998512
with evolution of tomcat (and jdk) logging mechanisms in tomcat were also changing. Both links which you provided are correct, but they describe diffferent versions of tomcat.
It is better consult in that case original documentation of tomcat vor your version.
for tomcat 5.5:
for tomcat 5.0:
for tomcat 4.1

in any case your servlet can be the same: you will use getServletContext().log() api call.
it is only different way of configuration.

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