登录接口

JWT安装配置

1. 安装JWT

   • pip install djangorestframework-jwt==1.11.0
     

2. syl/settings.py 配置jwt载荷中的有效期设置

   • # 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
         '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': 'user.utils.jwt_response_payload_handler',
     }
     

3. syl/settings.py JWT结合DRF进行认证权限配置

   • REST_FRAMEWORK = {
     
         # 1.认证器（全局）：用户登录校验用户名密码或者token是否合法
         '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
         ],
         # 2.权限配置（全局）： 顺序靠上的严格（根据不同的用户角色，可以操作不同的表）
         'DEFAULT_PERMISSION_CLASSES': [
             # 'rest_framework.permissions.IsAdminUser', # 管理员可以访问
             'rest_framework.permissions.IsAuthenticated',  # 认证用户可以访问
             # '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
         ],
     }
     

4. user/urls.py 增加获取token接口和刷新token接口

   • from django.urls import include, path
     from rest_framework.routers import SimpleRouter, DefaultRouter
     from rest_framework_jwt.views import obtain_jwt_token, refresh_jwt_token
     # 自动生成路由方法, 必须使用视图集
     # router = SimpleRouter() # 没有根路由 /user/ 无法识别
     from . import views
     
     router = DefaultRouter()  # 1.有根路由
     router.register(r'user', views.UserViewSet)  # 2.配置路由
     router.register(r'user', views.UserViewSet)
     urlpatterns = [
         # path('apiview', views.UserInfoViewSet.as_view()),
         path('index/', views.index),
         path('apiview/', views.UserView.as_view()),
         path('api-auth/', include('rest_framework.urls', namespace='rest_framework')),
         path('login/', obtain_jwt_token),  # 获取token，登录视图
     
         # 认证地址,
     
     ]
     urlpatterns += router.urls  # 3.模块地址
     urlpatterns += router.urls
     print(urlpatterns)
     
     

5. 在user/utils.py中从写jwt_response_payload_handler

   • def jwt_response_payload_handler(token, user=None, request=None, role=None):
         """
         自定义jwt认证成功返回数据
         :token 返回的jwt
         :user 当前登录的用户信息[对象]
         :request 当前本次客户端提交过来的数据
         :role 角色
         """
         if user.first_name:
             name = user.first_name
         else:
             name = user.username
             return {
                 'authenticated': 'true',
                 'id': user.id,
                 "role": role,
                 'name': name,
                 'username': user.username,
                 'email': user.email,
                 'token': token,
             }
     
     

6. postman测试接口

7. postman测试接口

   • http://192.168.56.100:8888/user/login/
     

   • '''自定义认证和权限优先级更高，可以覆盖settings.py中的 '''
     # 自定义权限类
     permission_classes = (MyPermission,)
     # 自定义认证类, 自定义会覆盖全局配置
     authentication_classes = (JSONWebTokenAuthentication,)
     

   • 

8. 使用获得的token获取所有用户信息

   • http://192.168.56.100:8888/user/user/
     

   • 

9. .源码分析

   • class JSONWebTokenAPIView(APIView):
     	"""
     	Base API View that various JWT interactions inherit from.
     	"""
     	permission_classes = ()
     	authentication_classes = ()
     	def get_serializer_context(self):
     	"""
     	Extra context provided to the serializer class.
     	"""
     	return {
     		'request': self.request,
     		'view': self,
     	}
     	def get_serializer_class(self):
     		"""
     		Return the class to use for the serializer.
     		Defaults to using `self.serializer_class`.
     		You may want to override this if you need to provide different
     		serializations depending on the incoming request.
     		(Eg. admins get full serialization, others get basic serialization)
     		"""
     		assert self.serializer_class is not None, (
     		"'%s' should either include a `serializer_class` attribute, "
     		"or override the `get_serializer_class()` method."
     		% self.__class__.__name__)
     		return self.serializer_class
     	def get_serializer(self, *args, **kwargs):
     		"""
     		Return the serializer instance that should be used for validating and
     		deserializing input, and for serializing output.
     		"""
     		serializer_class = self.get_serializer_class()
     		kwargs['context'] = self.get_serializer_context()
     		return serializer_class(*args, **kwargs)
     	def post(self, request, *args, **kwargs):
     		serializer = self.get_serializer(data=request.data)
     		if serializer.is_valid():
     		user = serializer.object.get('user') or request.user # User表对象
     		token = serializer.object.get('token') # 获取到生成的
     		token
     		response_data = jwt_response_payload_handler(token, user, request)
     		response = Response(response_data)
     		if api_settings.JWT_AUTH_COOKIE:
     			expiration = (datetime.utcnow() +
     			api_settings.JWT_EXPIRATION_DELTA)
     			response.set_cookie(api_settings.JWT_AUTH_COOKIE,token,expires=expiration,httponly=True)
     			return response
     		return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)