log4j.properties相关
http://www.cnblogs.com/ITEagle/archive/2010/04/23/1718365.html
http://www.cnblogs.com/alipayhutu/archive/2012/06/21/2558249.html
web.xml相关
http://www.cnblogs.com/v-weiwang/p/4814050.html
原文：http://www.cnblogs.com/rocky-AGE-24/p/5059413.html