The web server is configured to be one JVM for all the servlets. Numerous people are developing different classes. We want each Servlet to write to its own log.

Class X { ... xLog = getLogger( "DEBUG" ); ... xLog.info( "message" ); ... }

Class ServletY extends HttpServlet { ... xLog = getLogger( "DEBUG" ); ... configureAndWatch( ); ... xLog.info( "message" ); ... someMethod() { new X(); } }

Class ServletZ extends HttpServlet { ... xLog = getLogger( "DEBUG" ); ... configureAndWatch( ); ... xLog.info( "message" ); ... someMethod() { new X(); } ... }

log4j.properties: ... Logger name="DEBUG" Appender A ... Appender A ...

Class A extends DailyRollingFileAppender { String _file = null;

a( ) { super.init(); setFile( "" ); }

setFile( aFile ) { // Throw stack trace to figure out which servlet called you ... // add path and .log to get filename like /tmp/ServletY.log or // /tmp/ServletZ.log _file = "newFile"; } }

Now the problem: When the first servlet comes up, say ServletY, it configures and creates /tmp/ServletY.log. ServletY and X write to the file and everyone is happy. Now the next servlet comes up, say ServletZ. It configures and creates /tmp/ServletX.log. Now everything writes to this log but not the other.

So I guess what I am looking for is how I can I do logging on a servlet basis that writes to a particular log. The various support classes need to call something generic because they do not know which specific servlet called them.

Thanks, Adam