1.JWT安装配置

1.1 安装JWT

pip install djangorestframework-jwt==1.11.0

1.2 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',
}

1.3 syl/settings.py JWT结合DRF进行认证权限配置

################### 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',
    #
    #     # 'rest_framework.permissions.IsAuthenticated',
    # ),

}

import datetime

# AUTHENTICATION_BACKENDS = [
#     # 'usersapp.views.CustomBackend'
# ]
JWT_AUTH = {
    'JWT_AUTH_HEADER_PREFIX': 'JWT',
    'JWT_EXPIRATION_DELTA': datetime.timedelta(days=1),
    'JWT_RESPONSE_PAYLOAD_HANDLER':
    'user.views.jwt_response_payload_handler', # 重新login登录返回函数
}

1.4 user/urls.py 增加获取token接口和刷新token接口

from django.urls import path
from rest_framework_jwt.views import obtain_jwt_token  # 验证密码后返回token
from user.views import *


urlpatterns = [
    path('login/', obtain_jwt_token),
    #path('register/',RegisterView.as_view()),
]

1.5 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,
}

user/utils.py

2.postman测试接口

2.1 测试登录接口，获取token

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,)

2.2 使用获得的token获取所有用户信息

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

3.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)