Logging info on server side

[Fabio Piergentili]

Does any one know how I can log to the tomcat server logs via a class not extending HTTPServlet on the server side. Basically a class used by a servlet. In the servlet I simply use log(" mesg"). How can I pass this ability to another class?

Thanks

[Sebastian Janisch]

Why would you want to log something that has already been logged ?

[Bear Bibeault]

Use Log4J.

[Deepak Bala]

There are many logging frameworks out there that can do it for you. Have a look at log4j like Bear suggested

[Fabio Piergentili]

log4j worked great. For anyone else interested, this is all I had to do:

1. put log4j jar file in lib directory of tomcat
2. provide a log4j.properties file located in the tomcat lib directory to set up logging to a file instead of console ( I have no idea where the console stuff would go as this is getting run from the tomcat container )
3. in the class provide ( In my case the class is QueryBuilder )

 
import org.apache.log4j.Logger;
static Logger logger = Logger.getLogger(QueryBuilder.class);
logger.debug( " Log this " );

[Mark E Hansen]

Fabio Piergentili wrote:2. provide a log4j.properties file located in the tomcat lib directory to set up logging to a file instead of console ( I have no idea where the console stuff would go as this is getting run from the tomcat container )
[/code]

The console is the window in which the user launched the server. If you're running as a system service, then I think you don't have a console (at least on Windows).

[Bear Bibeault]

That's a Windows-only situation. On other OS's, console is the catalina.out file in the logs folder.

[Fabio Piergentili]

You are correct. Now I do not have to track another file. I just log to console and it dumps into catalina.out file in the tomcat logs directory.

Thanks for the info.