短信验证码 http://q.cnblogs.com/q/45695/ http://www.cnblogs.com/steed-zgf/archive/2012/02/03/2336984.html http://www.cnblogs.com/Yellowshorts/archive/2013/01/15/2861472.html http://msdn.microsoft.com/zh-cn/magazine/cc163347.aspx http://bbs.csdn.net/topics/390673332