Admin page couldn't get found

Question

Here come my urls.py page code:

from django.contrib import admin  
from django.urls import path 

admin.autodiscover()

urlpatterns = [
    path('admin/', admin.site.urls),
]

When I run Django I get 404 error:

Page not found (404) Request Method: GET Request URL: http://localhost:51169/admin Using the URLconf defined in DjangoWebProject3.urls, Django tried these URL patterns, in this order:

admin/ The current path, admin, didn't match any of these.

I know this is a famous problem but couldn't find any answer for it.

What is wrong?

Answer 1

The admin url is http://localhost:51169/admin/. You are missing the trailing slash.

Normally, Django should redirect from /admin to /admin/. If it hasn't it suggests that you've changed something in the settings, or you've upgraded Django from an older version without switching from MIDDLEWARE_CLASSES to MIDDLEWARE in your settings.py.

Answer 2

正如Alasdair所说，我更新了Django，但之前没有更新设置： 知道： 在设置中，我将middleware_classes更改为中间件，并注释了其中一种中间件：＃'django.contrib.auth.middleware.SessionAuthenticationMiddleware'

现在登录页面有效！

谢谢