解决问题需要参考的文章

http://blog.youkuaiyun.com/zdy0_2004/article/details/54730611

http://blog.youkuaiyun.com/jxnu_xiaobing/article/details/44955613

http://blog.youkuaiyun.com/superbfly/article/details/21287889

http://blog.youkuaiyun.com/yyywill/article/details/52995837