SLF4J versions 1.4.0 and later requires log4j 1.2.12 or later 终极解决
到SLF4J官方网站:http://www.slf4j.org/codes.html#log4j_version有如下说明:Thetracelevelwasaddedtolog4jinversion1.2.12releasedonAugust29,2005.ThetracelevelwasaddedtotheSLF4JAPIinversion1.4.0onMay16th,2007.Thus,sta