Question

INSTALLED_APPS = [
    'login.apps.LoginConfig',
    'mainsaaas.apps.MainsaaasConfig',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'corsheaders',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'corsheaders.middleware.CorsMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]
CORS_ORIGIN_ALLOW_ALL = True

即使我安装了

pip install django-cors-headers。现在它显示了corsheaders的导入错误，这个我已经检查了虚拟环境和corsheaders包的回溯

> Trace back:
>     
>     
>     Unhandled exception in thread started by <function wrapper at 0x7f5a7d5a1aa0> Traceback (most recent call last):   File
> "/home/next/virtual_env/venv/local/lib/python2.7/site-packages/django/utils/autoreload.py",
> line 226, in wrapper
>         fn(*args, **kwargs)   File "/home/next/virtual_env/venv/local/lib/python2.7/site-packages/django/core/management/commands/runserver.py",
> line 113, in inner_run
>         autoreload.raise_last_exception()   File "/home/next/virtual_env/venv/local/lib/python2.7/site-packages/django/utils/autoreload.py",
> line 249, in raise_last_exception
>         six.reraise(*_exception)   File "/home/next/virtual_env/venv/local/lib/python2.7/site-packages/django/utils/autoreload.py",
> line 226, in wrapper
>         fn(*args, **kwargs)   File "/home/next/virtual_env/venv/local/lib/python2.7/site-packages/django/__init__.py",
> line 27, in setup
>         apps.populate(settings.INSTALLED_APPS)   File "/home/next/virtual_env/venv/local/lib/python2.7/site-packages/django/apps/registry.py",
> line 85, in populate
>         app_config = AppConfig.create(entry)   File "/home/next/virtual_env/venv/local/lib/python2.7/site-packages/django/apps/config.py",
> line 90, in create
>         module = import_module(entry)   File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
>         __import__(name) ImportError: No module named corsheaders

使用虚拟环境和我的django版本是：Django == 1.10.5

Answer 1

CorsMiddleware应该尽可能地放置，特别是在任何可以生成响应的中间件之前，例如Django的CommonMiddleware或Whitenoise的WhiteNoiseMiddleware。如果不是之前，它将无法将CORS标头添加到这些响应中。

此外，如果你使用的是CORS_REPLACE_HTTPS_REFERER，它应该放在Django的CsrfViewMiddleware之前

Answer 2

您可以尝试该命令 pip install django-cors-headers 我使用Django版本：Django == 2.1.7，python版本：Python == 3.6，首先，我尝试pip3 install django-cors-headers，找不到模块名称corsheaders，然后我尝试 pip install django-cors-headers 有效可能对你有帮助考虑点子的版本

Answer 3

只需从pip安装

python -m pip install django-cors-headers

然后将其添加到已安装的应用中：

INSTALLED_APPS = [
    ...
    'corsheaders',
    ...
]

希望它会起作用。如果不起作用，请重新启动服务器并再次运行。

ImportError：没有名为corsheaders的模块

3 个答案: