python 使用flask_httpauth和pyjwt实现登录权限控制

本文主要是介绍python 使用flask_httpauth和pyjwt实现登录权限控制，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

最近需要用到，学习了一下记录

首先安装依赖

pip install Flask-HTTPAuth pyjwt passlib

Welcome to Flask-HTTPAuth’s documentation! — Flask-HTTPAuth documentation 

Welcome to PyJWT — PyJWT 2.8.0 documentation

Passlib 1.7.4 documentation — Passlib v1.7.4 Documentation

 实现验证token的方法，

from dependency_injector.wiring import inject, Provide
from flask_httpauth import HTTPTokenAuth 
import jwt
from flask import current_appauth_provider = HTTPTokenAuth(scheme='Bearer')@auth_provider.verify_token
def verify_token(token):  try:  payload = jwt.decode(token, self.secret_key, algorithms=[self.algorithm])  username=payload['username']try:user = self.user_repository.get_by_name(username)except EntityNotFoundError:current_app.logger.error(f'====== Login user not found, name : "+{username} ======')return False  else:return userexcept jwt.exceptions.DecodeError as e:  current_app.logger.error('====== Decode JWT Failed ======')return False  except jwt.exceptions.ExpiredSignatureError:  current_app.logger.error('====== JWT Already Expired ======')return False  

这样的话，只需要引入之前定义的auth_provider，然后在需要登录之后才能访问的api上加入@auth_provider.login_required，当然auth_provider这个变量名是自己取的，你怎么定义的就用什么就行了。这样的话访问该api的时候就会自动去拿jwt验证。

访问的时候需要在headers放Authorization为key，然后Bearer+token为value，Bearer这个指定是在定义auth_provider = HTTPTokenAuth(scheme='Bearer')指定的。

登录的方法可以看到，验证密码之后就会生成jwt返回 ，前端接到这个jwt之后，就会放在之后的请求内

from flask import  Blueprint, jsonify, request,current_app
from dependency_injector.wiring import inject, Provide
from main.containers import Container
from main.security.jwt_filter import auth_provider
import datetime
from passlib.apps import custom_app_context as pwd_contextauth_bp=Blueprint('auth',__name__)@auth_bp.route('/login', methods=['POST'])
def login():data = request.get_json()  username = data.get('username', None)  password = data.get('password', None)  if not username or not password:  current_app.logger.error(f'Login failed with missing username or password')return jsonify({'error': 'Missing username or password'}), 400  try:user=self.user_repository.get_by_name(username,session)except EntityNotFoundError:current_app.logger.error(f'====== Login user not found, name : "+{username} ======')return jsonify({'error': 'User does not exist'}), 401     if pwd_context.verify(password, user.password):  jwt = self._generate_token(user.user_id, username)return jsonify({'token': jwt}), 200  else:  current_app.logger.error(f'{username} login failed.')return jsonify({'error': 'Username and password does not match'}), 401   @auth_bp.route('/account', methods=['GET'])
@auth_provider.login_required
def account():return auth_provider.current_user().to_response(),200def _generate_token(self, user_id, username)->any:expire_time = datetime.datetime.now(datetime.UTC) + datetime.timedelta(minutes=self.access_token_expire_minutes)  payload = {  'exp': expire_time,  #失效时间'iat': datetime.datetime.now(datetime.UTC),  #生效时间'sub': user_id,   'username': username }  token = jwt.encode(payload, 'A05qYNxO/ka9lzjtB5WVJ6li/KHM91fMMT+4Wm6xRBKMivll2kMmR+cJWyEE0bh4PcwI/9LUwwlzZ0pjkFepTg==', algorithm='HS256')  return token  

jwt过期时间你可以根据需求自己定义

 生成密码的方式在这里

from passlib.apps import custom_app_context as pwd_contextTEST_USERS_ARRAY= [{"id": uuid.uuid1().hex,"username":"admin","password": pwd_context.encrypt("admin")},{"id": uuid.uuid1().hex,"username":"user1","password": pwd_context.encrypt("user1")}
]

from flask import jsonify
from sqlalchemy import Column, Stringfrom main.db_access.domain.common_entity import CommonEntityclass User(CommonEntity):__tablename__ = "TBL_AA_USER"user_id = Column(String, primary_key=True)username = Column(String)password = Column(String)def __init__(self,user_id,username,password):self.user_id=user_idself.username=usernameself.password=passworddef to_dict(self):return {'user_id':self.user_id,'username':self.username}def to_response(self):  data = self.to_dict()  response = jsonify(data)  response.headers['Content-Type'] = 'application/json'  return response

 

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