摘要：
http://www.iteye.com/topic/378077http://blog.csdn.net/azheng270/article/details/2173430http://baike.baidu.com/view/25347.htmhttp://www.cnblogs.com/suman/archive/2010/10/23/1858864.htmllog4j.properties//1log4j.rootCategory=INFO,stdout,R [appender1,appender2...] [OFF,FATAL,ERROR,WARN,INFO,DEBUG,ALL]// 阅读全文