You can add a ConsoleAppender to the logger at Runtime. The following link details this: http://howtodoinjava.com/2013/04/08/how-to-programmatically-configure-appenders-in-log4j/
Programmatically set log4j to System.out
题
I want to initialize a logger to simply write to the console.
E.g. (incorrect code)
Logger logger = Logger.getLogger(System.out);
logger.debug("test") //prints to System.out
解决方案
其他提示
If you are using Apachi Logger or Java util logger then you should need to know this that getLogger() method is not taking any class object as argument.
Apachi Logger for print on console - See Console Appender.
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