django-admin startproject middlewarecd middlewaredjango-admin startapp app

# middleware/settings.py# INSTALLED_APPS最后添加 appINSTALLED_APPS = [ 'app',]

# 創建app/middleware.py并編輯from django.http import JsonResponseclass CustomMiddleware: def __init__(self, get_response):  print("程序啟動時執行, 只執行一次")  self.get_response = get_response def __call__(self, request):  print("中間件開始")  response = self.get_response(request)  print("中間件結束")  return response def process_view(self, request, view_func, view_args, view_kwargs):  print("請求實際函數前執行") def process_exception(self, request, exception):  print("程序異常時執行")  return JsonResponse({"msg": exception.args[0], "code": -1})

MIDDLEWARE = [...'app.middleware.CustomMiddleware']

# app/views.pyfrom django.http import JsonResponsedef json_response(request): print('json_response') err = 3 / 0 return JsonResponse({"msg": "ok", "code": 0})

# middleware/urls.pyfrom app.views import json_response, view_responseurlpatterns = [ ... path("view", view_response)]

# 在中間件函數process_view中添加print("path: {}; method: {}; data: {}".format(request.get_full_path(), request.method, request.body or ''))