http://liukai.iteye.com/blog/982088
http://blog.csdn.net/jaune161/article/details/18350183
http://docs.spring.io/spring-security/site/docs/3.2.5.RELEASE/reference/htmlsingle/#mvc
spring security学习,你妹真难
原文：http://my.oschina.net/moziqi/blog/340826
