待完善。。。。。。。。。。。。。
http://www.cnblogs.com/baby-mouse/p/4654886.html
http://www.cnblogs.com/fish7/p/4089196.html
http://blog.youkuaiyun.com/u012596172/article/details/40822543
http://blog.youkuaiyun.com/hpuhjh/article/details/47616779
http://blog.youkuaiyun.com/xiaoxiaoluo/article/details/8169533