How to implement user identity authentication under Tornado in Python

The content of this article is about the implementation method of user identity authentication under Tornado in Python. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

There is a current_user attribute in Tornado's RequestHandler class that is used to save the user name of the current request. The default value of RequestHandler.get_current_user is None. This attribute can be read at any time in processing functions such as get() and post() to obtain the current user name. RequestHandler.current_user is a read-only property, so if you want to set the property value, you need to overload the RequestHandler.get_current_user() function to set the property value.

Example: Use the RequestHandler.current_user attribute and the RequestHandler.get_current_user() method to implement user identity control.

Code:

import tornado.web
import tornado.ioloop
import uuid  #UUID 生成库

dict_sessions={}  #保存所有登录的Session

class BaseHandler(tornado.web.RequestHandler):  #公共基类
    #写入current_user的函数
    def get_current_user(self):
        session_id=self.get_secure_cookie("session_id")
        return dict_sessions.get(session_id)

class MainHandler(BaseHandler):
    @tornado.web.authenticated    #需要身份认证才能访问的处理器
    def get(self):
        name=tornado.escape.xhtml_escape(self.current_user)
        self.write("Hello,"+name)

class LoginHandler(BaseHandler):
    def get(self):   #登陆页面
        self.write('body'
                   '

'                    'Name:'                    ''                    '

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