log4j->common logging->slf4j
log4j.rootLogger = [ level ] , appenderName1 , appenderName2 , …
log4j.appender.appenderNamen = fully.qualified.name.of.appender.package log4j.appender.appenderName.option1 = value1 … log4j.appender.appenderName.optionN = valueN
#实用父亲的配置
log4j.addivity.org.apache=true
