python Django增删改查 快速体验 先创建个app子级python .\manage.py startapp app01 ## 然后创建数据模型 **app01下的** **modules.py文件**from django.db import models # Create your models here. class UserInfo(models.Model): name=models.CharField(max_length=32) password=models.CharField(max_length=12) age=models.IntegerField() tel=models.IntegerField(max_length=11)配置数据库'default': { 'ENGINE': 'django.db.backends.mysql', 'NAME': '数据库名', 'USER': '数据库用户名', 'PASSWORD': '密码', 'HOST': '127.0.0.1', 'PORT': '3306', }迁移数据库python manage.py makemigrations 和 python manage.py migrate写路由urlfrom django.contrib import admin from django.urls import path,include from app01 import views urlpatterns = [ # path('admin/', admin.site.urls), # path('index/',views.index), # path('user/list/', views.user_list), # path('login/', views.ApiLogin.as_view()), # path('del/', views.ApiDel.as_view()), path('add/', views.addUser.as_view()), path('user/', views.UserList.as_view()), path('updateuser/', views.upDateUser.as_view()), path('del/', views.deluser.as_view()), ] 4.view页面编写增删改查from django.shortcuts import render,HttpResponse from rest_framework.views import APIView # Create your views here. from django import views from app01.models import UserInfo from rest_framework.response import Response from app01.ser import APIViewUserInfo class addUser(APIView): def post(self,request): obj=APIViewUserInfo(data=request.data) if obj.is_valid(): obj.save() return Response({"data":obj.data, "status" : 201,"message":"添加用户成功"}) return Response(data=obj.errors,status=400) class UserList(APIView): def get(self,request): obj=UserInfo.objects.all() ser=APIViewUserInfo(instance=obj,many=True) return Response(ser.data) class upDateUser(APIView): def post(self,request): print(request.data.get('id')) i=request.data.get('id') try: user=UserInfo.objects.get(id=i) except Exception as e: return Response(data='不存在', status=201) # 创建序列化对象，并将要反序列化的数据传递给data构造参数，进而进行验证 user.password=request.data.get('password') if request.data.get('name')!='': print(request.data.get('name')=='') user.name=request.data.get('name') user.save() return Response(status=400) class deluser(APIView): def post(self,request): id=request.data.get('id') UserInfo.objects.filter(id=id).delete() return Response({"msg":'删除成功',"state":"true"}) # def index(request): # return HttpResponse("欢迎使用") # # # def user_list(request): # return render(request,"user_list.html") # # class ApiLogin(APIView): # def get(self,request): # return HttpResponse('get') # def post(self,request): # UserInfo.objects.create(name='张三',password='123456',age=15,tel='1234567891') # obj=UserInfo.objects.all() # print(obj) # return HttpResponse('post') # # class ApiDel(APIView): # def post(self,request): # UserInfo.objects.filter(id=4).delete() # return HttpResponse('删除成功')5.序列化 反序列化# -*- coding: utf-8 -*- from rest_framework import serializers from app01.models import UserInfo class APIViewUserInfo(serializers.Serializer): """图书数据序列化器""" id = serializers.IntegerField(label='ID', read_only=True) # 主键序列化 # 第一：普通字段序列化 name = serializers.CharField(label='名称', max_length=20) password = serializers.CharField(label='密码') age = serializers.IntegerField(label='年龄', required=False) tel = serializers.IntegerField(label='电话', required=False) # # 第二：一对多字段序列化 # heroinfo_set = serializers.PrimaryKeyRelatedField(read_only=True, many=True) # # 第三：自定义显示（显示多对多） # xxx = serializers.SerializerMethodField(read_only=True) class Meta: model = UserInfo # 自定义显示 多对多 字段 # 定义创建语法：ser.save()执行，就会立刻调用create方法用来创建数据 def create(self, validated_data): '''validated_data: 表单或者vue请求携带的json：{"username":"zhangsan","password":"123456"}''' return self.Meta.model.objects.create(**validated_data)

Django JWT token 登录注册 setting.py INSTALLED_APPS = [ ... 'rest_framework', 'rest_framework.authtoken', 'corsheaders', # 添加 django-cors-headers 使其可以进行 cors 跨域 'app01', ... ]MIDDLEWARE = [ 'corsheaders.middleware.CorsMiddleware', 'django.middleware.security.SecurityMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', # 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware', ] CORS_ORIGIN_ALLOW_ALL=True # jwt载荷中的有效期设置 JWT_AUTH = { # 1.token前缀：headers中 Authorization 值的前缀 'JWT_AUTH_HEADER_PREFIX': 'JWT', # 2.token有效期：一天有效 'JWT_EXPIRATION_DELTA': datetime.timedelta(days=1), # 3.刷新token：允许使用旧的token换新token，接口对接需要设置为true 'JWT_ALLOW_REFRESH': True, # 4.token有效期：token在24小时内过期, 可续期token 'JWT_REFRESH_EXPIRATION_DELTA': datetime.timedelta(hours=24), # 5.自定义JWT载荷信息：自定义返回格式，需要手工创建 'JWT_RESPONSE_PAYLOAD_HANDLER': 'app01.views.jwt_response_payload_handler', } # AUTHENTICATION_BACKENDS = ['user.utils.EmailAuthBackend'] # 在DRF配置文件中开启认证和权限 REST_FRAMEWORK = { # 用户登陆认证方式 'DEFAULT_AUTHENTICATION_CLASSES': [ 'rest_framework_jwt.authentication.JSONWebTokenAuthentication', # 在DRF中配置JWT认证 # 'rest_framework.authentication.SessionAuthentication', # 使用session时的认证器 # 'rest_framework.authentication.BasicAuthentication' # 提交表单时的认证器 ], # 权限配置, 顺序靠上的严格 'DEFAULT_PERMISSION_CLASSES': [ # 'rest_framework.permissions.IsAdminUser', # 管理员可以访问 'rest_framework.permissions.IsAuthenticated', # 全局配置只有认证用户可以访问接口 # 'rest_framework.permissions.IsAuthenticatedOrReadOnly', # 认证用户可以访问, 否则只能读取 # 'rest_framework.permissions.AllowAny', # 所有用户都可以访问 ], }urls.pyfrom django.urls import include, path from rest_framework.authtoken.views import obtain_auth_token from app01 import views from rest_framework_jwt.views import obtain_jwt_token from django.contrib import admin urlpatterns = [ path('admin/', admin.site.urls), path('login/', obtain_jwt_token), # 登录url，用于获取token path('register/', views.RegisterView.as_view()), # 注册视图, /user/register/ path('adduser/',views.adduserList.as_view()), path('getuserlist/', views.getuserlist.as_view()), ] views.pyfrom rest_framework.permissions import AllowAny from .models import * from .ser import seruserlist,sergetuserList from django.contrib.auth.backends import ModelBackend from rest_framework.views import APIView from rest_framework.response import Response from rest_framework.pagination import PageNumberPagination def jwt_response_payload_handler(token, user=None, request=None): """ 自定义jwt认证成功返回数据 """ return { 'token': token, 'user_id': user.id, 'username': user.username, "code": 200, "state": True } class RegisterView(APIView): """ 用户注册, 权限是: 匿名用户可访问 """ # 自定义权限类 permission_classes = (AllowAny,) def post(self, request): """ 接收邮箱和密码, 前端校验两遍一致性, 注册成功后返回成功, 然后用户自行登录获取token 1. 随机用户名 2. 生成用户 3. 设置用户密码 4. 保存用户 :param request: :return: {'code':0,'msg':'注册成功'} """ email = request.data.get('email') passwrod = request.data.get('password') username = request.data.get('username') if all([email, passwrod]): pass else: return Response({'code': 9999, 'msg': '参数不全'}) user = User(username=username, email=email) user.set_password(passwrod) # 密码加密 user.save() return Response({'code': 0, 'msg': '注册成功'}) # 用户添加 class adduserList(APIView): # 自定义权限类 def post(self, request): ser=seruserlist(data=request.data) if ser.is_valid(): ser.save() return Response({"msg": '成功',"code":200}) return Response(data=ser.errors,status=400) # 分页（局部）：自定义分页器 局部 class PageNum(PageNumberPagination): # 查询字符串中代表每页返回数据数量的参数名, 默认值: None page_size_query_param = 'page_size' # 查询字符串中代表页码的参数名, 有默认值: page page_query_param = 'page' # 一页中最多的结果条数 # max_page_size = 2 # 查询用户 class getuserlist(APIView): def get(self, request): queryset = userlist.objects.all() print(request) if request.GET.get('page'): print(queryset) # 分页 pg = PageNum() page_objs = pg.paginate_queryset(queryset=queryset, request=request, view=self) ser = sergetuserList(instance=page_objs, many=True) # 关联数据多条 return Response(ser.data) ser = sergetuserList(instance=queryset, many=True) # 关联数据多条 return Response(ser.data)