使用通道2运行服务器时无法导入ASGI_应用程序模块

Question

我已经遵循了频道教程，但是在运行这些错误抛出时

包的版本是 频道==2.1.2Django==2.0.4

我错过了什么？ 在settings.py中

INSTALLED_APPS = [
   "channels"
    ....
]

ROOT_URLCONF = 'myapp.urls'
ASGI_APPLICATION = "myapp.routing.application"

添加了文件mayapp/routing.py

from channels.routing import ProtocolTypeRouter 

application = ProtocolTypeRouter({
    # Empty for now (http->django views is added by default)
})

这是错误日志

System check identified no issues (0 silenced).
August 01, 2018 - 13:11:42
Django version 2.0.4, using settings 'myapp.local_settings'
Starting ASGI/Channels version 2.1.2 development server at http://127.0.0.1:8080/
Quit the server with CONTROL-C.
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7f71ecfb6400>
Traceback (most recent call last):
  File "/home/vkchlt0192/myapp/lib/python3.5/site-packages/channels/routing.py", line 33, in get_default_application
    module = importlib.import_module(path)
  File "/home/vkchlt0192/myapp/lib/python3.5/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 986, in _gcd_import
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 956, in _find_and_load_unlocked
ImportError: No module named 'myapp.routing'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/vkchlt0192/myapp/lib/python3.5/site-packages/django/utils/autoreload.py", line 225, in wrapper
    fn(*args, **kwargs)
  File "/home/vkchlt0192/myapp/lib/python3.5/site-packages/channels/management/commands/runserver.py", line 80, in inner_run
    application=self.get_application(options),
  File "/home/vkchlt0192/myapp/lib/python3.5/site-packages/channels/management/commands/runserver.py", line 105, in get_application
    return StaticFilesWrapper(get_default_application())
  File "/home/vkchlt0192/myapp/lib/python3.5/site-packages/channels/routing.py", line 35, in get_default_application
    raise ImproperlyConfigured("Cannot import ASGI_APPLICATION module %r" % path)
django.core.exceptions.ImproperlyConfigured: Cannot import ASGI_APPLICATION module 'myapp.routing'

Answer 1

只是改变

ASGI_APPLICATION = mysite.routing.application

到

ASGI_APPLICATION = "routing.application"

Answer 2

检查consumers.py中是否存在任何潜在错误（可能是导入错误）。 另外，尝试将频道作为已安装的应用程序的第一项放在settings.py中。

如渠道文件所述：

The Channels development server will conflict with any other third-party apps that require an overloaded or replacement runserver command. An example of such a conflict is with whitenoise.runserver_nostatic from whitenoise. In order to solve such issues, try moving channels to the top of your INSTALLED_APPS or remove the offending app altogether.

Answer 3

您需要将routing.py文件放入mayapp/mayapp/routing.py而不是mayapp/routing.py