log4j配置文件基本含义说明
log4j.properties配置文件讲解如下: # Set root logger level to DEBUG and its only appender to A1 #log4j中有五级logger #FATAL 0 #ERROR 3 #WARN 4 #INFO 6 #DEBUG 7 配置根Logger,其语法为:#log4j.rootLogger = [ level ] , ap