Django REST框架用于快速构建前后端分离的WebAPI的工具包。

简单使用

1.安装依赖

pip install djangorestframework
pip install markdown
pip install django-filter

2.创建Django项目

python manage.py startapp Rest

3.在 settings 中的 INSTALLED_APPS 添加 'rest_framework'

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

MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
#'django.middleware.csrf.CsrfViewMiddleware', # 屏蔽
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
]
  1. views.py 文件,并添加如下代码:
from django.shortcuts import render

from rest_framework.views import APIView
from rest_framework.response import Response

# Create your views here.
class TestView(APIView):
# 构造函数
def dispatch(self, request, *args, **kwargs):
print("init")
return super().dispatch(request,*args,**kwargs)

def get(self,*args, **kwargs):
print("get {}".format(kwargs))
return Response("get 请求")

def post(self, request, *args, **kwargs):
print("post {}".format(request))
return Response('POST请求,响应内容')

def put(self, request, *args, **kwargs):
print("put 1")
return Response('put请求,响应内容')

5.在urls.py文件中添加想要访问的 url,并关联上述 views

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

from Rest import views

urlpatterns = [
path('admin/', admin.site.urls),
path(r'user/',views.TestView.as_view())
]

启动项目,访问​​http://127.0.0.1:8000/user/?format=api​

python manage.py runserver

通过​​get方式​​参数传递

from rest_framework.views import APIView
from rest_framework.response import Response
from django.http import JsonResponse

class TestView(APIView):
# 构造函数
def dispatch(self, request, *args, **kwargs):
return super().dispatch(request,*args,**kwargs)

# 接收get方式参数传递
# http://127.0.0.1:8000/user/?format=api&color=red
def get(self,request, *args, **kwargs):
ret = {"code":1001, "msg":"Get"}
ref_data = request.query_params.dict()
print("获取参数传递: {}".format(ref_data))

return JsonResponse(ret)

Django REST Framework_django

使用过滤器

1.安装依赖

pip install djangorestframework markdown django-filter

2.创建Django项目

python manage.py startapp rest

3.在 settings 中的 INSTALLED_APPS 添加 'rest_framework'

INSTALLED_APPS = [
'rest_framework' # 增加
'rest'
]

MIDDLEWARE = [
#'django.middleware.csrf.CsrfViewMiddleware', # 屏蔽
]

APPEND_SLASH=False

在blog的models中,建立我们需要的model

from django.db import models

# Create your models here.
class UserInfo(models.Model):
USER_TYPE = (
(1,'普通用户'),
(2,'VIP'),
(3,'SVIP')
)

user_type = models.IntegerField(choices=USER_TYPE,default=1)
username = models.CharField(max_length=32)
password = models.CharField(max_length=64)

class UserToken(models.Model):
user = models.OneToOneField(UserInfo,on_delete=models.CASCADE)
token = models.CharField(max_length=64)

建表

python .\manage.py makemigrations
python .\manage.py migrate

urls.py增加路由

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

from django.conf.urls import url
from rest.views import AuthView

urlpatterns = [
path('admin/', admin.site.urls),
url(r'^rest/v1/auth/$', AuthView.as_view())
]

增加views.py视图

from django.shortcuts import render, HttpResponse
from django.http import JsonResponse
from django.views import View

from rest import models
import json


def md5(user):
import hashlib
import time

# 当前时间,相当于生成一个随机的字符串
ctime = str(time.time())

# token加密
m = hashlib.md5(bytes(user, encoding='utf-8'))
m.update(bytes(ctime, encoding='utf-8'))
return m.hexdigest()


class AuthView(View):

def get(self, request, *args, **kwargs):
ret = {'code': 1000, 'msg': 'success', 'name': '偷偷'}
ret = json.dumps(ret, ensure_ascii=False)

return HttpResponse(ret)

def post(self, request, *args, **kwargs):
ret = {'code': 1000, 'msg': None}
try:
user = request.POST.get('username')
pwd = request.POST.get('password')
obj = models.UserInfo.objects.filter(username=user).first()

if not obj:
# 如果用户第一次登陆则创建用户
obj = models.UserInfo.objects.create(username=user, password=pwd)
ret['code'] = 1001
ret['msg'] = '创建用户成功'

# 为用户创建token
token = md5(user)
# 存在就更新,不存在就创建
models.UserToken.objects.update_or_create(user=obj, defaults={'token': token})
ret['token'] = token
except Exception as e:
ret['code'] = 1002
ret['msg'] = '请求异常'
return JsonResponse(ret)

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