tornado 簡單使用實例

時間 2019-11-16

原文原文鏈接

import tornado.httpserver
import tornado.ioloop
import tornado.web
import tornado.options
import os.pathhtml

from tornado.options import define, options
define("port", default=8000, help="run on the given port", type=int)web

class BaseHandler(tornado.web.RequestHandler):
def get_current_user(self):
return self.get_secure_cookie("username")cookie

class LoginHandler(BaseHandler):
def get(self):
self.render('login.html')app

def post(self):
self.set_secure_cookie("username", self.get_argument("username"))
self.redirect("/")tornado

class WelcomeHandler(BaseHandler):
@tornado.web.authenticated
def get(self):
self.render('index.html', user=self.current_user)oop

class LogoutHandler(BaseHandler):
def get(self):
if (self.get_argument("logout", None)):
self.clear_cookie("username")
self.redirect("/")post

if __name__ == "__main__":
tornado.options.parse_command_line()url

settings = {
"template_path": os.path.join(os.path.dirname(__file__), "templates"),
"cookie_secret": "bZJc2sWbQLKos6GkHn/VB9oXwQt8S0R0kRvJ5/xJ89E=",
"xsrf_cookies": True,
"login_url": "/login"
}orm

application = tornado.web.Application([
(r'/', WelcomeHandler),
(r'/login', LoginHandler),
(r'/logout', LogoutHandler)
], **settings)server

http_server = tornado.httpserver.HTTPServer(application)
http_server.listen(options.port)
tornado.ioloop.IOLoop.instance().start()
模板文件在應用templates/目錄下。

登陸表單：login.html
<html>
<head>
<title>Please Log In</title>
</head>

<body> <form action="/login" method="POST"> {% raw xsrf_form_html() %} Username: <input type="text" name="username" /> <input type="submit" value="Log In" /> </form> </body> </html> 歡迎回客：index.html <html> <head> <title>Welcome Back!</title> </head> <body> <h1>Welcome back, {{ user }}</h1> </body> </html>

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