使⽤DRF-JWT来做登陆祖册以及状态保持

• 下载依赖

pip install djangorestframework-jwt

• 配置seetings

  • INSTALLED_APPS

  • REST_frameWORK

  • JWT_AUTH

• 写注册⽣成token的代码

  • 使⽤django的⽤户模型类

  • 密码要密⽂

  • ⽣成token并返回到前端

• 登陆⽣成token的代码

  • 登陆⽣成token的代码

  • view⾥写返回的数据有哪些

  • settings⾥配置并告知django

• settings⾥配置并告知django

  • 导包（ from rest_framework.permissions import IsAuthenticated,AllowAny ）

  • 导包（ from rest_framework.permissions import IsAuthenticated,AllowAny ）

########### 1、在INSTALLED_APPS中加入'rest_framework.authtoken', #################
INSTALLED_APPS = [
    '''
    'rest_framework.authtoken',  # 
    '''
]

################### 2、配置jwt验证 ######################
REST_frameWORK = {
    # 身份认证
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'rest_framework_jwt.authentication.JSONWebTokenAuthentication',
        'rest_framework.authentication.SessionAuthentication',
        'rest_framework.authentication.BasicAuthentication',
    ),
#全局配置JWT验证设置
'DEFAULT_PERMISSION_CLASSES': (
            'rest_framework.permissions.IsAuthenticated',
        ),
}

import datetime

JWT_AUTH = {
    'JWT_AUTH_HEADER_PREFIX': 'JWT',
    'JWT_EXPIRATION_DELTA': datetime.timedelta(days=1),
    'JWT_RESPONSE_PAYLOAD_HANDLER':
        'users.views.jwt_response_payload_handler',  # 重新login登录返回函数
}
AUTH_USER_MODEL='users.User'  # 指定使用users APP中的 model 

from django.contrib import admin
from django.urls import path,re_path,include

urlpatterns = [
    path('admin/', admin.site.urls),
          
   re_path(r'users/',include(('users.urls','users'),namespace='users'))
]

#! /usr/bin/env python
# -*- coding: utf-8 -*-
from django.urls import path,re_path,include
from users import views
from rest_framework_jwt.views import obtain_jwt_token  # 验证密码后返回token

urlpatterns = [
    path('v1/register/', views.RegisterView.as_view(), name='register'),  # 注册用户
    path('v1/login/', obtain_jwt_token,name='login'),  # 用户登录后返回token
    path('v1/list/', views.UserList.as_view(), name='register'),  # 测试需要携带token才能访问
]

from django.db import models
from django.contrib.auth.models import AbstractUser


class User(AbstractUser):
    username = models.CharField(max_length=64, unique=True)
    password = models.CharField(max_length=255)
    phone = models.CharField(max_length=64)
    token = models.CharField(max_length=255)

#! /usr/bin/env python
# -*- coding: utf-8 -*-
from rest_framework_jwt.settings import api_settings
from rest_framework import serializers
from users.models import User

class UserSerializer(serializers.Serializer):
    username = serializers.CharField()
    password = serializers.CharField()
    phone = serializers.CharField()
    token = serializers.CharField(read_only=True)

    def create(self, data):
        user = User.objects.create(**data)
        user.set_password(data.get('password'))
        user.save()
        # 补充生成记录登录状态的token
        jwt_payload_handler = api_settings.JWT_PAYLOAD_HANDLER
        jwt_encode_handler = api_settings.JWT_ENCODE_HANDLER
        payload = jwt_payload_handler(user)
        token = jwt_encode_handler(payload)
        user.token = token
        return user

from django.shortcuts import render
import json
from rest_framework.views import APIView
from rest_framework.views import Response
from rest_framework.permissions import IsAuthenticated
from rest_framework_jwt.authentication import JSonWebTokenAuthentication
from users.serializers import UserSerializer


# 用户注册
class RegisterView(APIView):
    def post(self, request, *args, **kwargs):
        serializer = UserSerializer(data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data, status=201)
        return Response(serializer.errors, status=400)


# 重新用户登录返回函数
def jwt_response_payload_handler(token, user=None, request=None):
    '''
    :param token: jwt生成的token值
    :param user: User对象
    :param request: 请求
    '''
    return {
        'token': token,
        'user': user.username,
        'userid': user.id
    }


# 测试必须携带token才能访问接口
class UserList(APIView):
    permission_classes = [IsAuthenticated]  # 接口中加权限
    authentication_classes = [JSONWebTokenAuthentication]

    def get(self,request, *args, **kwargs):
        print(request.meta.get('HTTP_AUTHORIZATION', None))
        return Response({'name':'zhangsan'})
    def post(self,request, *args, **kwargs):
        return Response({'name':'zhangsan'})

#jwt设置
REST_frameWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'rest_framework_jwt.authentication.JSONWebTokenAuthentication',
        'rest_framework.authentication.SessionAuthentication',
        'rest_framework.authentication.BasicAuthentication',
    ),
    #配置全部接口需要验证才能发访问，验证方式为登陆用户
    'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.IsAuthenticated',
    ),
}

class RegisterView(APIView):
   # 在此接口中允许所有用户访问，去除jwt的验证要求
    permission_classes = [AllowAny]  
    
    def post(self, request, *args, **kwargs):
        serializer = UserSerializer(data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data, status=201)
        return Response(serializer.errors, status=400)

AUTHENTICATION_BACKENDS = [
    'userapp.views.UsernameMobileAuthBackend',
]

from django.db.models import Q
from django.contrib.auth.backends import ModelBackend #验证基类

class UsernameMobileAuthBackend(ModelBackend):
    #重写验证方式
    def authenticate(self, request, username=None, password=None, **kwargs):
        user = MyUser.objects.get(Q(username=username) | Q(phone=username))
        if user is not None and user.check_password(password):
            return user

from rest_framework_jwt.utils import jwt_decode_handler


user_obj = jwt_decode_handler(token)