Question

关于这个错误，我使用类似的问题来设置与Django的频道消息传递。我尝试升级Django和Channels并更改requirements.txt文件。

"Cannot find %r in ASGI_APPLICATION module %s" % (name, path)
django.core.exceptions.ImproperlyConfigured: Cannot find 'app' in ASGI_APPLICATION module <MyApp>.routing

我的路由配置按照mysite / routing中的教程

application = ProtocolTypeRouter({
# (http->django views is added by default)
'websocket': AuthMiddlewareStack(
    URLRouter(
        chat.routing.websocket_urlpatterns
    )
  ),
})

和应该只是简单的import语句

import chat.routing

未被识别为教程中的说明，它应该在我的IDE中。

我的目录结构也完全按照本教程

使用设置配置

INSTALLED_APPS = [
'channels',
'chat',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
]

和

ASGI_APPLICATION = 'chat.routing.application'

谢谢

Answer 1

可以肯定这是问题所在。需要在wsgi.py旁边添加此asgi.py文件

import os
import django

from channels.routing import get_default_application

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "<myproj>.settings")
django.setup()
application = get_default_application()

并使用

启动服务器

(vEnv)$daphne <myproj>.asgi:application --port 8888

Answer 2

使用Django Channels服务器运行daphne的routing.py时，出现了此类错误。

django.core.exceptions.ImproperlyConfigured: Requested setting INSTALLED_APPS, but settings are not configured. You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings.

这是有关daphne服务器的文档解释，

Daphne是用于ASGI和ASGI-HTTP的HTTP，HTTP2和WebSocket协议服务器，旨在为Django通道提供动力。

它支持协议的自动协商；无需使用URL前缀即可确定WebSocket端点与HTTP端点。

注意：Daphne 2与Channels 1.x应用程序不兼容，仅与Channels 2.x和其他ASGI应用程序不兼容。安装Daphne的1.x版本以支持Channels 1.x。

如您所见，我们可以通过daphne服务器使用HTTP和WS协议，而无需使用Gunicorn服务器。您可以做的只是在routing.py文件顶部的下面添加一行。

from .wsgi import *

所以现在您的routing.py文件应该是这样的，

# DockerDjangoNginx is my project name
# your routing.py file should be in this location where the wsgi.py file is placed
# DockerDjangoNginx/DockerDjangoNginx/routing.py

from .wsgi import *  # add this line to top of your code
from channels.auth import AuthMiddlewareStack
from channels.routing import ProtocolTypeRouter, URLRouter
import comapp.routing as routing

application = ProtocolTypeRouter({
    # (http->django views is added by default)
    'websocket': AuthMiddlewareStack(
        URLRouter(
            routing.websocket_urlpatterns
        )
    ),
})

现在，您可以运行daphne服务器。

(venv) [root@t2mdocker]#daphne -b 0.0.0.0 -p 8000 DockerDjangoNginx.routing:application
2019-05-30 03:33:06,390 INFO     Starting server at tcp:port=8000:interface=0.0.0.0
2019-05-30 03:33:06,391 INFO     HTTP/2 support enabled
2019-05-30 03:33:06,391 INFO     Configuring endpoint tcp:port=8000:interface=0.0.0.0
2019-05-30 03:33:06,392 INFO     Listening on TCP address 0.0.0.0:8000

如果在运行daphne服务器时看到类似HTTP/2 support not enabled (install the http2 and tls Twisted extras)的内容，则可以运行pip install -U Twisted[tls,http2]来更正这些错误。

Answer 3

尝试以下方法，对我有用：

from channels.routing import ProtocolTypeRouter, URLRouter
from channels.auth import AuthMiddlewareStack

from chat import routing # This change

application = ProtocolTypeRouter({
# (http->django views is added by default)
'websocket': AuthMiddlewareStack(
    URLRouter(
        routing.websocket_urlpatterns   #This change
    )
  ),
})

django频道配置不正确：在ASGI_APPLICATION模块中找不到“ app”

3 个答案: