tornado 中没有session功能，需要我们自己实现。
目录：
settings：
settings = {
'template_path': 'templates',
'static': 'static'
}
home：
#!/usr/bin/env python
# Version = 3.5.2
# __auth__ = '无名小妖'
import tornado.web
import hashlib
import time
container = {}
def md5():
m = hashlib.md5()
m.update(bytes(str(time.time()), encoding='utf8'))
return m.hexdigest()
class Session:
def __init__(self, handler):
random_str = handler.get_cookie('__session_id__')
if random_str:
if random_str in container:
self.r_str = random_str
else:
random_str = md5()
container[random_str] = {}
self.r_str = random_str
else:
random_str = md5()
container[random_str] = {}
self.r_str = random_str
handler.set_cookie('__session_id__', random_str, expires=time.time()+200)
def set_session(self, key, value):
ret = container[self.r_str][key] = value
return ret
def get_session(self, key):
ret = container[self.r_str].get(key, None)
return ret
class BaseHandler(tornado.web.RequestHandler):
def initialize(self):
self.session_info = Session(self)
class MainHandler(BaseHandler):
def get(self):
# self.write("Hello, world")
self.render('index.html')
def post(self, *args, **kwargs):
user = self.get_argument('user')
pwd = self.get_argument('pwd')
if user == 'xiao' and pwd == '123':
self.session_info.set_session('is_login', True)
self.session_info.set_session('user', user)
self.redirect('/main')
else:
self.redirect('/index')
class IndexHandler(BaseHandler):
def get(self):
current_user = self.session_info.get_session('user')
if current_user:
self.write(current_user)
else:
self.write('未登录')
注：自己写个session类，再重写initialize方法。
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form action="/index" method="post">
<input type="text" name="user">
<input type="text" name="pwd">
<input type="submit" value="提交">
</form>
</body>
</html>
app:
from tornado import ioloop
import tornado.web
from controler.home import MainHandler, IndexHandler
from commons.settings import settings
application = tornado.web.Application([
(r"/index", MainHandler), # url--对应类，django对应的是函数
(r"/main", IndexHandler), # url--对应类，django对应的是函数
],
**settings # 加载配置
)
if __name__ == "__main__":
application.listen(8888)
ioloop.IOLoop.instance().start()
效果：
未登录时，访问main：
登录：
登陆后：
证明已登录。