django-allauth自己写的QQ登录provider

django-allauth有很多第三方登录的集成确没有qq第三方登录，是因为qq的第三方登录需要用access_token获取openid后才能继续获取用户信息，比其他平台多了一步，具体可以看我写的QQ第三方登录流程。
首先在allauth的目录...\allauth\socialaccount\providers\下面新建qq文件夹，创建provider.py、urls.py、views.py文件

########provider.py#########

from allauth.socialaccount.providers.base import ProviderAccount
from allauth.socialaccount.providers.oauth2.provider import OAuth2Provider

class QQAccount(ProviderAccount):
    def get_profile_url(self):
        return 'https://graph.qq.com/user/get_user_info'

    def get_avatar_url(self):
        return self.account.extra_data.get('figureurl_qq_2')

    def to_str(self):
        default = super(QQAccount, self).to_str()
        return self.account.extra_data.get('nickname', default)


class QQProvider(OAuth2Provider):
    id = 'qq'
    name = 'QQ'
    account_class = QQAccount

    def extract_uid(self, data):
        return data['openid']

    def extract_common_fields(self, data):
        return dict(username='qq用户_'+data.get('nickname'),
                    name=data.get('name'))


provider_classes = [QQProvider]

########urls.py###########
from django.conf.urls import include, url

from allauth.utils import import_attribute
from .provider import QQProvider


def qq_urlpatterns(provider):
    login_view = import_attribute(
        provider.get_package() + '.views.oauth2_login')
    callback_view = import_attribute(
        provider.get_package() + '.views.oauth2_callback')

    urlpatterns = [
        url(r'^login/$',
            login_view, name=provider.id + "_login"),
        # qq的回调链接验证十分严格，不能有斜线结尾，因此需要修改
        url(r'^login/callback$',
            callback_view, name=provider.id + "_callback"),
    ]

    return [url('^' + provider.get_slug() + '/', include(urlpatterns))]

urlpatterns = qq_urlpatterns(QQProvider)

#########views.py#############
import requests, re, json

from allauth.socialaccount.providers.oauth2.views import (
    OAuth2Adapter,
    OAuth2CallbackView,
    OAuth2LoginView,
)

from .provider import QQProvider


class QQOAuth2Adapter(OAuth2Adapter):
    provider_id = QQProvider.id
    authorize_url = 'https://graph.qq.com/oauth2.0/authorize'
    access_token_url = 'https://graph.qq.com/oauth2.0/token'
    open_id_url = 'https://graph.qq.com/oauth2.0/me'
    profile_url = 'https://graph.qq.com/user/get_user_info'

    def complete_login(self, request, app, token, **kwargs):
        open_id_resp = requests.get(self.open_id_url, params={'access_token': token.token})
        # 返回的是jsonp需要解析一下 'callback( {"client_id":"YOUR_APPID","openid":"YOUR_OPENID"} )';

        open_id_dict = json.loads(re.match(r'callback\( ({.*}) \);', open_id_resp.text).group(1))
        openid = open_id_dict.get('openid')
        oauth_consumer_key = open_id_dict.get('client_id')
        resp = requests.get(self.profile_url,
                            params={'access_token': token.token,
                                    'oauth_consumer_key': oauth_consumer_key,
                                    'openid': openid})
        extra_data = resp.json()
        # 使用openid作为uid
        extra_data['openid'] = openid
        return self.get_provider().sociallogin_from_response(request, extra_data)


oauth2_login = OAuth2LoginView.adapter_view(QQOAuth2Adapter)
oauth2_callback = OAuth2CallbackView.adapter_view(QQOAuth2Adapter)