Django @csrf_exempt在类视图中不起作用

我在Django 1.9中有一个使用SessionMiddleware的应用程序。我想在同一项目中为此应用程序创建一个API，但是在执行POST请求时，它不起作用@csrf_exempt批注。

我正在处理引发Postman的请求，这是我到目前为止的结果：

settings.py

MIDDLEWARE_CLASSES = [
    'corsheaders.middleware.CorsMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.cache.UpdateCacheMiddleware',
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'a9.utils.middleware.LocaleMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'a9.core.access.middleware.AccessMiddleware',
    'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'django.middleware.cache.FetchFromCacheMiddleware',    
]

OAUTH2_PROVIDER = {
    # this is the list of available scopes
    'SCOPES': {'read': 'Read scope', 'write': 'Write scope', 'groups': 'Access to your groups'}
}

CORS_ORIGIN_ALLOW_ALL = True
CORS_ALLOW_METHODS = (
    'DELETE',
    'GET',
    'OPTIONS',
    'PATCH',
    'POST',
    'PUT',
)
CORS_ALLOW_HEADERS = (
    'accept',
    'accept-encoding',
    'authorization',
    'content-type',
    'dnt',
    'origin',
    'user-agent',
    'x-csrftoken',
    'x-requested-with',
)

REST_FRAMEWORK = {
    # Use Django's standard `django.contrib.auth` permissions,
    # or allow read-only access for unauthenticated users.
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly',
        #'rest_framework.permissions.IsAuthenticated',
    ],
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'oauth2_provider.ext.rest_framework.OAuth2Authentication',
        #'rest_framework.authentication.TokenAuthentication',
    )
}

urls.py

urlpatterns = [
    url(r'^v1/', include([
        url(r'^', include(router.urls)),
        url(r'^auth/', MyAuthentication.as_view()),
        url(r'^o/', include('oauth2_provider.urls', namespace='oauth2_provider')),
        url(r'^admin/', include(admin.site.urls)),
    ])),
]

views.py

@method_decorator(csrf_exempt, name='dispatch')
class MyAuthentication(TemplateView):

    def post(self, request, *args, **kwargs):

        return HttpResponse('Hello, World!')

此后，我总是得到CSRF验证失败的错误。

我在django-rest-framework的IRC频道中问了这个问题，但我仍然没有答案。请，任何建议将不胜感激。