http://www.developer.com/java/ent/extend-spring-security-to-protect-multi-tenant-saas-applications.html
https://scotch.io/bar-talk/bootstrap-3-tips-and-tricks-you-might-not-know
http://massimilianosciacco.com/handle-permissions-spring-security
http://springinpractice.com/2010/10/27/quick-tip-spring-security-role-based-authorization-and-permissions
http://dtr-trading.blogspot.tw/2014/04/spring-security-32-users-roles_7532.html
http://stackoverflow.com/questions/25971979/spring-security-acl-doesnt-compare-bitwise-permissions
http://html5doctor.com/html5-audio-the-state-of-play/
http://www.dotnetfunda.com/articles/show/1764/how-to-play-audio-in-the-html5-and-how-to-control-the-audio-play-using
http://agile.dzone.com/articles/dont-fall-love-your-own-code
http://java.dzone.com/articles/orm-offensive-anti-pattern
http://blog.miniasp.com/post/2012/10/18/How-to-do-Web-Load-Test.aspx