First read the Valve chapter in Configuration Reference Guide. There is also javadoc for the class.
The following is an example of AccessLogValve configuration. If you want it to log requests processed by your web application, add it to the context file of your application (META-INF/context.xml
). If you want it to log all requests, add it to the Host element in conf/server.xml
file.
Starting with Tomcat 7 an AccessLogValve is already configured in the default conf/server.xml file that is shipped with Tomcat.
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="${catalina.base}/logs" prefix="access_log" fileDateFormat="yyyy-MM-dd.HH" suffix=".log" pattern="%t %H cookie:%{SESSIONID}c request:%{SESSIONID}r %m %U %s %q %r" />