2
Ich versuche, das Auth Beispiel für webapp2 zu folgen, die hier gefunden werden kann: http://code.google.com/p/webapp-improved/issues/detail?id=20„Typeerror: Objekt vom Typ‚NoneType‘hat keine len()“ nach, um webapp2 Auth Beispielcode anmelden
Die eigentliche main.py ist dies:
# -*- coding: utf-8 -*-
import webapp2
from webapp2_extras import auth
from webapp2_extras import sessions
from webapp2_extras.auth import InvalidAuthIdError
from webapp2_extras.auth import InvalidPasswordError
def user_required(handler):
"""
Decorator for checking if there's a user associated with the current session.
Will also fail if there's no session present.
"""
def check_login(self, *args, **kwargs):
auth = self.auth
if not auth.get_user_by_session():
# If handler has no login_url specified invoke a 403 error
try:
self.redirect(self.auth_config['login_url'], abort=True)
except (AttributeError, KeyError), e:
self.abort(403)
else:
return handler(self, *args, **kwargs)
return check_login
class BaseHandler(webapp2.RequestHandler):
"""
BaseHandler for all requests
Holds the auth and session properties so they are reachable for all requests
"""
def dispatch(self):
"""
Save the sessions for preservation across requests
"""
try:
response = super(BaseHandler, self).dispatch()
self.response.write(response)
finally:
self.session_store.save_sessions(self.response)
@webapp2.cached_property
def auth(self):
return auth.get_auth()
@webapp2.cached_property
def session_store(self):
return sessions.get_store(request=self.request)
@webapp2.cached_property
def auth_config(self):
"""
Dict to hold urls for login/logout
"""
return {
'login_url': self.uri_for('login'),
'logout_url': self.uri_for('logout')
}
class LoginHandler(BaseHandler):
def get(self):
"""
Returns a simple HTML form for login
"""
return """
<!DOCTYPE hml>
<html>
<head>
<title>webapp2 auth example</title>
</head>
<body>
<form action="%s" method="post">
<fieldset>
<legend>Login form</legend>
<label>Username <input type="text" name="username" placeholder="Your username" /></label>
<label>Password <input type="password" name="password" placeholder="Your password" /></label>
</fieldset>
<button>Login</button>
</form>
</html>
""" % self.request.url
def post(self):
"""
username: Get the username from POST dict
password: Get the password from POST dict
"""
username = self.request.POST.get('username')
password = self.request.POST.get('password')
# Try to login user with password
# Raises InvalidAuthIdError if user is not found
# Raises InvalidPasswordError if provided password doesn't match with specified user
try:
self.auth.get_user_by_password(username, password)
self.redirect('/secure/')
#self.response.out.write('Hello, webapp World!')
except (InvalidAuthIdError, InvalidPasswordError), e:
# Returns error message to self.response.write in the BaseHandler.dispatcher
# Currently no message is attached to the exceptions
e = "shit"
return e
class CreateUserHandler(BaseHandler):
def get(self):
"""
Returns a simple HTML form for create a new user
"""
return """
<!DOCTYPE hml>
<html>
<head>
<title>webapp2 auth example</title>
</head>
<body>
<form action="%s" method="post">
<fieldset>
<legend>Create user form</legend>
<label>Username <input type="text" name="username" placeholder="Your username" /></label>
<label>Password <input type="password" name="password" placeholder="Your password" /></label>
</fieldset>
<button>Create user</button>
</form>
</html>
""" % self.request.url
def post(self):
"""
username: Get the username from POST dict
password: Get the password from POST dict
"""
username = self.request.POST.get('username')
password = self.request.POST.get('password')
# Passing password_raw=password so password will be hashed
# Returns a tuple, where first value is BOOL. If True ok, If False no new user is created
user = self.auth.store.user_model.create_user(username, password_raw=password)
if not user[0]: #user is a tuple
return user[1] # Error message
else:
# User is created, let's try redirecting to login page
try:
self.redirect(self.auth_config['login_url'], abort=True)
except (AttributeError, KeyError), e:
self.abort(403)
class LogoutHandler(BaseHandler):
"""
Destroy user session and redirect to login
"""
def get(self):
self.auth.unset_session()
# User is logged out, let's try redirecting to login page
try:
self.redirect(self.auth_config['login_url'])
except (AttributeError, KeyError), e:
return "User is logged out"
class SecureRequestHandler(BaseHandler):
"""
Only accessible to users that are logged in
"""
@user_required
def get(self, **kwargs):
user = self.auth.get_user_by_session()
try:
return "Secure zone for %s <a href='%s'>Logout</a>" % (str(user), self.auth_config['logout_url'])
except (AttributeError, KeyError), e:
return "Secure zone"
class MainPage(webapp2.RequestHandler):
def get(self):
#self.response.headers['Content-Type'] = 'text/plain'
self.response.out.write('Hello, webapp World!')
webapp2_config = {}
webapp2_config['webapp2_extras.sessions'] = {
'secret_key': 'Im_an_alien',
}
app = webapp2.WSGIApplication([
webapp2.Route(r'/login/', handler=LoginHandler, name='login'),
webapp2.Route(r'/logout/', handler=LogoutHandler, name='logout'),
webapp2.Route(r'/secure/', handler=SecureRequestHandler, name='secure'),
webapp2.Route(r'/create/', handler=CreateUserHandler, name='create-user')
], debug=True)
wenn ich einen Benutzer erstellen und versuchen, mit ihm zu melden, erhalte ich die Folgezurückverfolgungs:
object of type 'NoneType' has no len()
Traceback (most recent call last):
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 1511, in __call__
rv = self.handle_exception(request, response, e)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 1505, in __call__
rv = self.router.dispatch(request, response)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 1253, in default_dispatcher
return route.handler_adapter(request, response)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 1077, in __call__
return handler.dispatch()
File "/base/data/home/apps/s~deafphoneconnect/1.357704879430861291/main.py", line 44, in dispatch
self.session_store.save_sessions(self.response)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2_extras/sessions.py", line 420, in save_sessions
session.save_session(response)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2_extras/sessions.py", line 205, in save_session
response, self.name, dict(self.session), **self.session_args)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2_extras/sessions.py", line 423, in save_secure_cookie
value = self.serializer.serialize(name, value)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2_extras/securecookie.py", line 47, in serialize
signature = self._get_signature(name, value, timestamp)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2_extras/securecookie.py", line 98, in _get_signature
signature = hmac.new(self.secret_key, digestmod=hashlib.sha1)
File "/base/python27_runtime/python27_dist/lib/python2.7/hmac.py", line 133, in new
return HMAC(key, msg, digestmod)
File "/base/python27_runtime/python27_dist/lib/python2.7/hmac.py", line 68, in __init__
if len(key) > blocksize:
TypeError: object of type 'NoneType' has no len()
ich weiß, es ist nicht mein SDK ist, weil es geschieht auch, wenn die Anwendung wird bereitgestellt ed, jedoch musste ich manuell ndb zum Projekt hinzufügen.
Haben Sie eine Idee, was hier vor sich geht?
Sind Sie sicher, dass Sie es ein 'secret_key' von' None' nicht vorbei? – agf
das war es. Vielen Dank! – Sologoub