http://www.cnblogs.com/artech/archive/2011/05/22/authentication_01.html https://www.cnblogs.com/Frank-yafeya/p/3283699.html https://www.cnblogs.com/jfzhu/p/4067873.html https://www.cnblogs.com/niaowo/p/4727378.html 1. server a. implement UserNaePassw…