http://blog.csdn.net/yuxiaohen/article/details/17226971
http://www.bubuko.com/infodetail-633883.html
http://blog.csdn.net/shado_walker/article/details/60575578
http://blog.csdn.net/chenyijun/article/details/42876133
http://www.cnblogs.com/surfsky/p/4352898.html
http://www.cnblogs.com/surfsky/p/4290753.html
