You can also add categories with very granular information using the category() method. This method will allow you to add a category definition with a range of severity levels and even a list of which appenders to respond to.
public void category(string name, [numeric levelMin='0'], [numeric levelMax='4'], [string appenders='*'])
Parameters:
name
- A unique name for the appender to register. Only unique names can be registered per instance.levelMin
- The default min log level for this category. Defaults to the lowest level 0 or FATALlevelMax
- The max default log level for this category. If not passed it defaults to the highest level possibleappenders
- A list of appender names to configure this category with else it will use all the appenders in the root logger. You can also use * to add all registered apenders.
//log all email service messages to the MyLogFileAppender and the Console.
config.category(name="org.model.EmailService",appenders="MyLogFileAppender,Console");