Flask 0.10在会话cookie上给出unicode错误

Question

升级到Flask 0.10后,我收到此错误:

flask.debughelpers.UnexpectedUnicodeError
UnexpectedUnicodeError: A byte string with non-ASCII data was passed to the session system which can only store unicode strings.  Consider base64 encoding your string (String was 'iB\rOU#\xf7BO\x08^\xa6\xd1)v\xad')

Traceback (most recent call last)
File "/srv/www/li/venv/lib/python2.7/site-packages/flask/app.py", line 1836, in __call__
return self.wsgi_app(environ, start_response)
File "/srv/www/li/venv/lib/python2.7/site-packages/flask/app.py", line 1820, in wsgi_app
response = self.make_response(self.handle_exception(e))
File "/srv/www/li/venv/lib/python2.7/site-packages/flask/app.py", line 1403, in handle_exception
reraise(exc_type, exc_value, tb)
File "/srv/www/li/venv/lib/python2.7/site-packages/flask/app.py", line 1817, in wsgi_app
response = self.full_dispatch_request()
File "/srv/www/li/venv/lib/python2.7/site-packages/flask/app.py", line 1479, in full_dispatch_request
response = self.process_response(response)
File "/srv/www/li/venv/lib/python2.7/site-packages/flask/app.py", line 1693, in process_response
self.save_session(ctx.session, response)
File "/srv/www/li/venv/lib/python2.7/site-packages/flask/app.py", line 837, in save_session
return self.session_interface.save_session(self, session, response)
File "/srv/www/li/venv/lib/python2.7/site-packages/flask/sessions.py", line 321, in save_session
val = self.get_signing_serializer(app).dumps(dict(session))
File "/srv/www/li/venv/lib/python2.7/site-packages/itsdangerous.py", line 471, in dumps
return self.make_signer(salt).sign(self.dump_payload(obj))
File "/srv/www/li/venv/lib/python2.7/site-packages/itsdangerous.py", line 676, in dump_payload
json = super(URLSafeSerializerMixin, self).dump_payload(obj)
File "/srv/www/li/venv/lib/python2.7/site-packages/itsdangerous.py", line 454, in dump_payload
return self.serializer.dumps(obj)
File "/srv/www/li/venv/lib/python2.7/site-packages/flask/sessions.py", line 82, in dumps
return json.dumps(_tag(value), separators=(',', ':'))
File "/srv/www/li/venv/lib/python2.7/site-packages/flask/sessions.py", line 72, in _tag
return dict((k, _tag(v)) for k, v in iteritems(value))
File "/srv/www/li/venv/lib/python2.7/site-packages/flask/sessions.py", line 72, in <genexpr>
return dict((k, _tag(v)) for k, v in iteritems(value))
File "/srv/www/li/venv/lib/python2.7/site-packages/flask/sessions.py", line 80, in _tag
u'base64 encoding your string (String was %r)' % value)
UnexpectedUnicodeError: A byte string with non-ASCII data was passed to the session system which can only store unicode strings. Consider base64 encoding your string (String was 'iB\rOU#\xf7BO\x08^\xa6\xd1)v\xad')

flask/app.py第1693行的self.save_session(ctx.session,response)给出的是:flask.sessions.SecureCookieSession({'_ id':'iB\rOU#\ xf7BO\x08 ^\xa6\xd1) v\xad','_ flashes':[('message','请登录以访问此页.')]})

所以,如果我正确地读到这个,那么会话会给出一个烧瓶尝试unicode(并且失败)的id.我不知道如何纠正这个问题(清空我的浏览器缓存以希望新的会话也无济于事).谁能给我任何关于我应该做什么的建议？

亲切的问候,

CARST

编辑:一些额外的信息.我的设置使用flask,flask_mail,flask.ext.mongoengine和flask.ext.security; 我使用MongoEngine:db = flask.ext.mongoengine.MongoEngine(app)和flask-security:user_datastore = flask.ext.security.MongoEngineUserDatastore(db,User,Role)security = flask.ext.security.Security(app,user_datastore) )

编辑:它似乎是一个双重问题: Flask登录:TypeError:解码Unicode不受支持

(没见过,抱歉)

Answer 1

这是Flask-Login目前的一个问题.据我所知,它已在扩展的git版本中修复.

Answer 2

一个临时的解决方法（感谢 Kave）是降级 Flask 和 Werkzeug：

pip install werkzeug==0.8.3
pip install flask==0.9
pip install Flask-Login==0.1.3