生成二维码

class QRlogin(ViewSet):
    @action(methods=['GET'], detail=False)
    def scan(self, request, *args, **kwargs):
        img = qrcode.make("http://127.0.0.1:8000/api/v1/user/qrlogin/login/?user_id=1")
        img = img.get_image()
        b = BytesIO()
        img.save(b, format='JPEG')
        res = base64.b64encode(b.getvalue())
        # return APIResponse(url='data:image/jpg;base64,'+res)
        return APIResponse(url=res, user_id=1)

扫码登录，将缓存存入redis里面

    @action(methods=['GET'], detail=False)
    def login(self, request, *args, **kwargs):
        user_id = request.GET.get('user_id')
        user = User.objects.get(pk=user_id)
        # 签发token,放到redis
        payload = jwt_payload_handler(user)
        token = jwt_encode_handler(payload)
        user_info = {'username': user.username, 'token': token}
        import time
        time.sleep(5)
        cache.set('user_id_%s' % user_id, user_info)
        return APIResponse()

检查登录

    @action(methods=['GET'], detail=False)
    def check_login(self, request, *args, **kwargs):
        user_id = request.GET.get('user_id')
        user_info = cache.get('user_id_%s' % user_id)
        if user_info:
            cache.set('user_id_%s' % user_id, None)
            return APIResponse(token=user_info.get('token'), username=user_info.get('username'))
        else:
            return APIResponse(code=101, msg='手机端尚未确认登录')