Python 提示:Exception: You must define the ‘cookie_secret‘ setting in your application to use secure c

问题环境说明:

Python3 基于Tornado(Web 非阻塞式开源服务器框架) 设置Cookie加密提示如下错误信息:Exception: You must define the 'cookie_secret' setting in your application to use secure cookies

大致意思:设置cookie 加密，必须设置cookie 加密凭证

我发生错误的原因在于：在配置tornado.web.Application 路由地址配置是，忘记添加cookie_secret (加密凭证属性值)

错误代码：

application = tornado.web.Application([ 
    (r"/", MainHandler), 
    (r"/get/([0-9]+)", GetHandler), 
    (r"/demo", PostHandler), 
    (r"/setCookie", CookieSetHandler), 
    (r"/getCookie", CookieGetHandler)])

修改代码：

application = tornado.web.Application([ 
    (r"/", MainHandler), 
    (r"/get/([0-9]+)", GetHandler), 
    (r"/demo", PostHandler), 
    (r"/setCookie", CookieSetHandler), 
    (r"/getCookie", CookieGetHandler)], cookie_secret="uYh7EQnp2XdTP1o/Vo=")

注意:使用Cookie 加密cookie 值必须配置cookie_secrect 加密凭证。