Python full Stack Series---define a session class

First: Note that the Get_cookie in the cookie is the return string, and Get_secure_cookie returns the byte type

            #self. Get_secure_cookie ()            #The decoded cookie value is returned as a byte string (unlike            # ' Get_cookie ').

MD5 encryption gets the hexadecimal is also the returned string type

        Import hashlib        import time        obj = hashlib.md5 ()        obj.update (bytes (str (time.time ()), encoding= "UTF8")) # Incoming byte type        random_str = obj.hexdigest () #返回字符串        "" "Return the Digest value as a string of hexadecimal digits. """

The following is a custom session class, and using:

Import tornado.web# on the memory redis file database container={} #定义一个session类class session:def __init__ (self,handler): self.h Andler=handler Pass def __genarate_random_str (self): import hashlib import Time obj = HASHL        IB.MD5 () obj.update (bytes (str (time.time ()), encoding= "UTF8")) #传入byte类型 random_str = Obj.hexdigest () #返回字符串        Return random_str def set_value (self,key,value): #在container中加入随机字符串 #加入自定义数据 #在客户端中写入随机字符串 Random_str= ' If Self.handler.get_cookie (' Py_session '): Random_str=self.handler.get_cookie (' py_ses Sion ') if not Container.get (random_str,none): Random_str = Self.__genarate_random_str () E LSE:RANDOM_STR=SELF.__GENARATE_RANDOM_STR () If not Container.get (random_str,none): Container [random_str]={} container[random_str][key]=value #加入客户端 Self.handler.set_cookie (' py_session ', random_s TR) def get_value (selF,key): #先去获取客户端的随机字符串 #从container中获取自定义数据 random_str=self.handler.get_cookie (' py_session ', None) Dict_info=container.get (Random_str,none) if not Dict_info:return None return DICT_INFO[KEY]CL            Indexhandler (Tornado.web.RequestHandler): Def get (self): if self.get_argument (' U ', None) in [' ASD ', ' ZXC ']: s = Session (self) s.set_value (' Is_login ', True) #self. Get_secure_cookie () #The de        Coded cookie value is returned as a byte string (unlike # ' Get_cookie ').        Else:self.write ("Please login") class Managerhandler (Tornado.web.RequestHandler): Def get (self, *args, **kwargs):            S=session (self) val = s.get_value (' is_login ') if Val:self.write ("login Successful") Else: Self.redirect ("/index") settings ={' Template_path ': ' Views ', ' static_path ': ' statics ', ' cookie_secret ': ' Dafawaf Awfaw ',}application = Tornado.web.Application ([(R "/INdex ", Indexhandler), (R"/manager ", Managerhandler),],**settings) 

Python full Stack Series---define a session class