django rest framework 实现用户登录认证详解

pip install djangorestframework

# MySQL 增加mysql 连接
DATABASES = {
 'default':{
  'ENGINE':'django.db.backends.mysql',
  'HOST':'127.0.0.1',
  'PORT':'3306',
  'NAME':'dbname', # 数据库名
  'USER':'username',
  'PASSWORD':'password',
  'OPTIONS':{
   'sql_mode': 'traditional'
  },
 }
}

# Application definition
INSTALLED_APPS = [
  ...
 'rest_framework',
 'api',
]

from django.db import models
# Create your models here.
class User(models.Model):
 username = models.CharField(max_length=32,unique=True)
 password = models.CharField(max_length=32)
 class Meta:
  db_table = 'user'
  verbose_name = verbose_name_plural = '用户信息表'
class userToken(models.Model):
 username = models.OneToOneField(to='User',on_delete=models.DO_NOTHING)
 token = models.CharField(max_length=60)
 class Meta:
  db_table = 'user_token'
  verbose_name = verbose_name_plural = '用户token表'

python manage.py makemigrations 
python manage.py migrate 

from django.shortcuts import render
# Create your views here.
import time
from api import models
from django.http import JsonResponse
from rest_framework.views import APIView
class AuthView(APIView):
 def post(self,request,*args,**kwargs):
  ret = {'code':1000,'msg':None}
  try:
   # 参数是datadict 形式
   usr = request.data.get('username')
   pas = request.data.get('password')
   # usr = request._request.POST.get('username')
   # pas = request._request.POST.get('password')
   # usr = request.POST.get('username')
   # pas = request.POST.get('password')
   print(usr)
   # obj = models.User.objects.filter(username='yang', password='123456').first()
   obj = models.User.objects.filter(username=usr,password=pas).first()
   print(obj)
   print(type(obj))
   print(obj.username)
   print(obj.password)
   if not obj:
    ret['code'] = '1001'
    ret['msg'] = '用户名或者密码错误'
    return JsonResponse(ret)
    # 里为了简单，应该是进行加密，再加上其他参数
   token = str(time.time()) + usr
   print(token)
   models.userToken.objects.update_or_create(username=obj, defaults={'token': token})
   ret['msg'] = '登录成功'
   #ret['token'] = token
  except Exception as e:
   ret['code'] = 1002
   ret['msg'] = '请求异常'
  return JsonResponse(ret)

from django.contrib import admin
from django.urls import path
from django.conf.urls import url
from api.views import AuthView
urlpatterns = [
 path('admin/', admin.site.urls),
 url(r'^api/v1/auth/$', AuthView.as_view()),
]

# 如下有三种方式获取参数，有些文章介绍，必须使用第二种，
# 其实不然，具体使用哪种要看参数的传入形式而定，建议使用第一种，
#因为第一种支持key-value 和 json 格式 ，后面两种仅支持 key-value.
usr = request.data.get('username')
pas = request.data.get('password')
# usr = request._request.POST.get('username')
# pas = request._request.POST.get('password')
# usr = request.POST.get('username')
# pas = request.POST.get('password')