JBoss Logging Configuration: Write Application Specific Logs in a Different File

In order to write the logs generated from your application into a separate file (not in the default <j-boss-installation-directory>\...\server.log file), follow these steps:

Start JBoss Administrative Console: In your browser hit http://localhost:9990/console/App.html

Configure A File Handler:

• Go to Profile --> Core --> Logging --> 'Handler' tab --> 'File' sub-tab and Click 'Add' button.
• In the 'Add File Handlers' pop-up box, enter name, log-level, file-name with extension etc. and 'Save'
• You may also need to further edit the created handler and set 'Auto Flash' and 'Append' to true.

Add A Log Category:

• Now go to the 'Log Categories' tab and click 'Add'. Enter the root package of your project in the 'Name' field (e.g. com.mycompany.myproject).
• Now select (click on) the newly added log-category and click on 'handlers' (under 'Details' section at the bottom).
• Click 'Add' and add the handler that you created previously.

[You can also configure the handler and Log Category by editing the .../standalone/configuration/standalone.xml file of your server directory.]

Happy Logging:
Now you can log using slf4j from your application like:

private static Logger logger = LoggerFactory.getLogger(MyClass.class);

and all logs of your application will be written to the file-name that you specified for the handler configured above.

I have used EAP 6.2.0 GA (AS 7.3) application server and slf4j (for logging).

Related Links:
JBoss: Configure Logging
slf4j Manual.