def post(self, *args, **kwargs):
name = self.get_argument('name')
pwd = self.get_argument('password')
user = User.by_name(name)
if user and user.password == pwd:
# self.render('demo_3-2.html',name=name,)
self.session.set('user',name)
self.write('登录成功')
else:
self.write('用户名或密码错误~')
