基于cookie实现用户验证

 #!/usr/bin/env python
 import tornado.ioloop
 import tornado.web

 class IndexHander(tornado.web.RequestHandler):
     def get(self, *args, **kwargs):
         if self.get_argument('u',None)in['alex','eric']:
             # self.set_cookie('name',self.get_argument('u'))
             self.write("登录成功")
             self.set_secure_cookie('user',self.get_argument('u'))
         else:
             self.write('请登录')
 class ManagerHandler(tornado.web.RequestHandler):
     def get(self, *args, **kwargs):
         # if self.get_cookie('name',None) in ['alex','eric']:
         if str(self.get_secure_cookie('user',None),encoding='utf-8') in ['alex','eric']:
             self.write("欢迎登录:" + str(self.get_secure_cookie('user'),encoding="utf-8"))
         else:
             self.redirect('/index')
 settings = {
     "template_path":"views",
     "static_path":"statics",
     "cookie_secret":"taochen"
 }

 application = tornado.web.Application([
     (r"/index",IndexHander),
     (r"/manager",ManagerHandler),
 ],**settings)

 if __name__ == '__main__':
     application.listen(8888)
     tornado.ioloop.IOLoop.instance().start()