Django 路由报错友好提示

这个方法要在设置路由文件内使用也就是urls.py内。

"""mysite URL Configuration
 
The `urlpatterns` list routes URLs to views. For more information please see:
    https://docs.djangoproject.com/en/2.0/topics/http/urls/
Examples:
Function views
    1. Add an import:  from my_app import views
    2. Add a URL to urlpatterns:  path('', views.home, name='home')
Class-based views
    1. Add an import:  from other_app.views import Home
    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
Including another URLconf
    1. Import the include() function: from django.urls import include, path
    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
"""
from django.contrib import admin
#导入整个自定义模块
from . import d2
urlpatterns = [
    path('admin/', admin.site.urls),
]
# 统一捕获异常404
#handler400为要捕捉的错误提示这里拿404为例  = 项目名.模块名.方法名
handler404 = "mysite.d2.page_not_found"

因为Django内部设定若果你设置了捕捉错误提示，它就会认为你的项目以经上线，所以必须要在settings.py配置文件内把 DEBUG 改为False 才行。