cd d:\Tool           # 切换到Tool目录
python manage.py startapp apitest  #创建apitest应用

INSTALLED_APPS = [
  'django.contrib.admin',
  'django.contrib.auth',
  'django.contrib.contenttypes',
  'django.contrib.sessions',
  'django.contrib.messages',
  'django.contrib.staticfiles',
  'apitest',              #添加apitest app
  'rest_framework',          #添加rest_framework
]


#增加一段REST_FRAMEWORK配置
REST_FRAMEWORK = {
  # Use Django's standard `django.contrib.auth` permissions,
  # or allow read-only access for unauthenticated users.
  'DEFAULT_PERMISSION_CLASSES': [
    'rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly'
  ],
  'DEFAULT_RENDERER_CLASSES': (
    'rest_framework.renderers.JSONRenderer',
  ),
  'DEFAULT_PARSER_CLASSES': (
    'rest_framework.parsers.JSONParser',
  )
}

#coding=utf-8
from rest_framework import permissions
from rest_framework.response import Response
from rest_framework.decorators import api_view, permission_classes
from django.views.decorators.csrf import csrf_exempt

@csrf_exempt
@api_view(http_method_names=['post'])        #只允许post
@permission_classes((permissions.AllowAny,))
def inventory(request):
  parameter = request.data
  id = parameter['data']
  if id == 1:
    data = 'There are three dogs'
  elif id == 2:
    data = 'There are two dogs'
  else:
    data = 'nothing'
  return Response({'data':data})

urlpatterns = [
  path('admin/', admin.site.urls),
  path('food/', api.inventory),        #添加api中inventory路由
]

import requests

url= 'http://127.0.0.1:8000/food/'
data = {'data':2}
h=requests.post(url,json=data)
print(h.text)