Here I can use only single root logger. But if I want to use different root logger for different appenders (like for ConsoleAppender -DEBUG and for RollingFileAppender - ERROR), is there any way to implement such approach?
I can understand why you want to use different loggers, but why different root loggers? You're just making things hard for yourself if you try to do things which can't be done. Just use different loggers and skip the root logger entirely if you don't need it.