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后台设置
import tornado.ioloop
import tornado.web
class MainHandler(tornado.web.RequestHandler):
def get(self, *args, **kwargs):
print(self.cookies)
print(self.get_cookie(‘k1‘))
self.set_cookie(‘k2‘, ‘999‘)
self.render(‘index.html‘)
settings = {
‘template_path‘:‘views‘,
}
application = tornado.web.Application([
(r"/index", MainHandler),
],**settings)
if __name__ == "__main__":
application.listen(8888)
tornado.ioloop.IOLoop.instance().start()
前端设置
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<script>
function setCookieBySeconds(name, value, expires) {
var current_date = new Date();
current_date.setDate(current_date.getSeconds()+expires);
document.cookie = name + ‘= ‘ + value +‘;expires=‘ + current_date.toUTCString();
}
function setCookieByDays(name, value, expires) {
var current_date = new Date();
current_date.setDate(current_date.getDate()+expires);
document.cookie = name + ‘= ‘ + value +‘;expires=‘ + current_date.toUTCString();
}
//此外还可以导入jquery.cookie.js后通过
// $.cookie(‘k1‘,‘v1‘,{expires:7});设置过期时间为7天
</script>
</body>
</html>
cookie很容易被恶意的客户端伪造，加入你想在cookie中保存当前登陆用户的id之类的信息，你需要对cookie做签名以防止伪造，Tornado通过set_secure_cookie和get_secure_cookie方法直接支持了这种功能，要使用这些方法，你需要在创建应用一个密钥，名字为cookie_secret(在settings配置cookie_secret)
签名Cookie的本质是：
写cookie过程：
- 将值进行base64加密
- 对除值以外的内容进行签名，哈希算法（无法逆向解析）
- 拼接 签名 + 加密值
读cookie过程：
- 读取 签名 + 加密值
- 对签名进行验证
- base64解密，获取值内容
import tornado.ioloop
import tornado.web
class MainHandler(tornado.web.RequestHandler):
def get(self):
login_user = self.get_secure_cookie("login_user", None)
if login_user:
self.write(login_user)
else:
self.redirect(‘/login‘)
class LoginHandler(tornado.web.RequestHandler):
def get(self):
self.current_user()
self.render(‘login.html‘, **{‘status‘: ‘‘})
def post(self, *args, **kwargs):
username = self.get_argument(‘name‘)
password = self.get_argument(‘pwd‘)
if username == ‘wupeiqi‘ and password == ‘123‘:
self.set_secure_cookie(‘login_user‘, ‘武沛齐‘)
self.redirect(‘/‘)
else:
self.render(‘login.html‘, **{‘status‘: ‘用户名或密码错误‘})
settings = {
‘template_path‘: ‘template‘,
‘static_path‘: ‘static‘,
‘static_url_prefix‘: ‘/static/‘,
‘cookie_secret‘: ‘aiuasdhflashjdfoiuashdfiuh‘
}
application = tornado.web.Application([
(r"/index", MainHandler),
(r"/login", LoginHandler),
], **settings)
if __name__ == "__main__":
application.listen(8888)
tornado.ioloop.IOLoop.instance().start()
class Foo(object):
def __getitem__(self, key):
print(‘__getitem__‘,key)
def __setitem__(self, key, value):
print(‘__setitem__‘,key,value)
def __delitem__(self, key):
print(‘__delitem__‘,key)
obj = Foo()
result = obj[‘k1‘]
#obj[‘k2‘] = ‘wupeiqi‘
#del obj[‘k1‘]
class BaseHandler(tornado.web.RequestHandler):
def initialize(self):
self.xxoo = "wupeiqi"
class MainHandler(BaseHandler):
def get(self):
print(self.xxoo)
self.write(‘index‘)
class IndexHandler(BaseHandler):
def get(self):
print(self.xxoo)
self.write(‘index‘)
import tornado.ioloop
import tornado.web
from hashlib import sha1
import os, time
#将session以全局变量的形式保存
session_container = {}
#创建cookie_str随机字符串 的函数
create_session_id = lambda: sha1(‘%s%s‘ % (os.urandom(16), time.time())).hexdigest()
class Session(object):
#静态字段--session key名
session_id = "__sessionId__"
def __init__(self, request):
#尝试获取__sessionId__
session_value = request.get_cookie(Session.session_id)
if not session_value:
#获取失败，就创建随机字符串
self._id = create_session_id()
else:
#成功---拿值
self._id = session_value
#最后设置cookie---"__sessionId__:随机字符串"
request.set_cookie(Session.session_id, self._id)
def __getitem__(self, key):
return session_container[self._id][key]
def __setitem__(self, key, value):
if session_container.has_key(self._id):
session_container[self._id][key] = value
else:
session_container[self._id] = {key: value}
def __delitem__(self, key):
del session_container[self._id][key]
class BaseHandler(tornado.web.RequestHandler):
def initialize(self):
# my_session[‘k1‘]访问 __getitem__ 方法
#实例session对象，实现索引访问
self.my_session = Session(self)
class MainHandler(BaseHandler):
def get(self):
print(self.my_session[‘c_user‘])
print(self.my_session[‘c_card‘])
self.write(‘index‘)
class LoginHandler(BaseHandler):
def get(self):
self.render(‘login.html‘, **{‘status‘: ‘‘})
def post(self, *args, **kwargs):
username = self.get_argument(‘name‘)
password = self.get_argument(‘pwd‘)
if username == ‘wupeiqi‘ and password == ‘123‘:
self.my_session[‘c_user‘] = ‘wupeiqi‘
self.my_session[‘c_card‘] = ‘12312312309823012‘
self.redirect(‘/index‘)
else:
self.render(‘login.html‘, **{‘status‘: ‘用户名或密码错误‘})
settings = {
‘template_path‘: ‘views‘,
‘static_path‘: ‘static‘,
‘static_url_prefix‘: ‘/static/‘,
‘cookie_secret‘: ‘aiuasdhflashjdfoiuashdfiuh‘,
‘login_url‘: ‘/login‘
}
application = tornado.web.Application([
(r"/index", MainHandler),
(r"/login", LoginHandler),
], **settings)
if __name__ == "__main__":
application.listen(8888)
tornado.ioloop.IOLoop.instance().start()
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原文地址：http://www.cnblogs.com/xinsiwei18/p/5836381.html
