flask 实现token生成以及携带token请求接口

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前言

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一、Flask-JWT-Extended是什么？

示例：flask服务中使用生成token验证,携带token请求接口;设置token过期时间等.

二、使用步骤

1.引入库

pip install flask-jwt-extended

代码如下（示例）：

from flask import Flask, request, jsonify
from flask_jwt_extended import create_access_token, jwt_required, get_jwt_identity,JWTManager,create_refresh_token
from flask import Flask, request, Blueprint
from datetime import timedelta
import json# 安装 token 设置登录token验证
# pip install flask-jwt-extendeduser_blueprint = Blueprint('user_blueprint', __name__)@user_blueprint.route('/login', methods=['POST'])
def login():username = request.json.get('username', None)password = request.json.get('password', None)if username != 'admin' or password != 'admin':return jsonify({"msg": "Bad username or password",'code':401}), 401access_token = create_access_token(identity=username)refresh_token = create_refresh_token(identity=username)rest = {'access_token': f"Bearer {access_token}",'refresh_token': f"Bearer {refresh_token}",'code': 200}# return jsonify(access_token=access_token), 200# return jsonify(rest)return json.dumps(rest, ensure_ascii=False)@user_blueprint.route('/protected', methods=['GET'])
@jwt_required()
def protected():current_user = get_jwt_identity()print(current_user)# return jsonify({'msg': 'ok'}), 200return jsonify({'msg': 'ok'})# 使用刷新JWT来获取普通JWT  前提是已经调用了 /login 接口 携带 refresh_token请求该接口
@user_blueprint.route("/refresh", methods=["POST"])
@jwt_required(refresh=True)
def refresh():identity = get_jwt_identity()access_token = create_access_token(identity=identity)rest = {'access_token': f"Bearer {access_token}",'code': 200}return jsonify(rest)def create_app():app = Flask(__name__)app.secret_key = 'ChangeMe!'# app.config['JWT_SECRET_KEY'] = 'my_secret_key'app.config['JWT_BLACKLIST_ENABLED'] = Trueapp.config['JWT_BLACKLIST_TOKEN_CHECKS'] = ['access']# 设置普通JWT过期时间app.config["JWT_ACCESS_TOKEN_EXPIRES"] = timedelta(seconds=30)# 设置刷新JWT过期时间app.config["JWT_REFRESH_TOKEN_EXPIRES"] = timedelta(days=30)jwt = JWTManager(app)jwt.init_app(app)app.register_blueprint(user_blueprint)return appapp = create_app()if __name__ == '__main__':# app.run()app.run(debug=True, port='8888')

2.请求验证

代码如下（示例）：

import requests
import jsonurl = 'http://127.0.0.1:8888/login'
data = {'username': 'admin','password': 'admin'}headers1 = {'Content-Type': 'application/json'}
data = json.dumps(data)
ret = requests.post(url=url, data=data, headers=headers1)
access_token = ret.json()['access_token']
refresh_token = ret.json()['refresh_token']
print(access_token)
print(refresh_token)access_token = 'Bearer vvv'
refresh_token = 'Bearer xxx'# ==============以下验证token
url2 = 'http://127.0.0.1:8888/protected'
token = access_token
params = {}
headers2 = {# 'Content-Type': 'application/json','Authorization': token}
ret2 = requests.get(url=url2,headers=headers2,params=params)
print(ret2.json())# ==============以下刷新token# url3 = 'http://127.0.0.1:8888/refresh'
# token = refresh_token
# headers2 = {
#         # 'Content-Type': 'application/json',
#         'Authorization': token}
# ret3 = requests.post(url=url3,headers=headers2)
# print(ret3.json()['access_token'])

该处使用的url网络请求的数据。

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总结

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