如何将flask_jwt_extended与蓝图一起使用？
如何将flask_jwt_extended与蓝图一起使用？
提问于 2019-08-03 14:04:30
我正在尝试建立一个博客作为一个投资组合样本使用python3和flask和flask_jwt_extended。
我可以像这样创建一个文件，它将运行：
from flask_jwt_extended import (create_access_token, get_jwt_identity, JWTManager, jwt_required, get_raw_jwt)
from flask import Flask, request, Blueprint
app = Flask(__name__)
app.config['JWT_SECRET_KEY'] = 'this-is-super-secret'
app.config['JWT_BLACKLIST_ENABLED'] = True
app.config['JWT_BLACKLIST_TOKEN_CHECKS'] = ['access']
jwt = JWTManager(app)
@app.route(....)
@jwt required但是当我尝试使用Blueprint时，它不会注册JWTManager
这是我的user.py文件：
from flask_jwt_extended import (create_access_token, get_jwt_identity, JWTManager, jwt_required, get_raw_jwt)
from flask import Flask, request, Blueprint
app = Flask(__name__)
app.config['JWT_SECRET_KEY'] = 'this-is-super-secret'
app.config['JWT_BLACKLIST_ENABLED'] = True
app.config['JWT_BLACKLIST_TOKEN_CHECKS'] = ['access']
jwt = JWTManager(app)
user_blueprint = Blueprint('user_blueprint', __name__)
@user_blueprint.route(....)
@jwt required这是我的app.py：
from user import *
app = Flask(__name__)
app.register_blueprint(user_blueprint)现在，当我尝试运行app.py时，它返回一个500 (内部错误)，并将其记录到日志文件中：
Traceback (most recent call last):
File "/usr/local/lib/python3.6/dist-packages/flask_jwt_extended/utils.py", line 127, in _get_jwt_manager
return current_app.extensions['flask-jwt-extended']
KeyError: 'flask-jwt-extended'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.6/dist-packages/flask/app.py", line 2292, in wsgi_app
response = self.full_dispatch_request()
File "/usr/local/lib/python3.6/dist-packages/flask/app.py", line 1815, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/usr/local/lib/python3.6/dist-packages/flask/app.py", line 1718, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.6/dist-packages/flask/_compat.py", line 35, in reraise
raise value
File "/usr/local/lib/python3.6/dist-packages/flask/app.py", line 1813, in full_dispatch_request
rv = self.dispatch_request()
File "/usr/local/lib/python3.6/dist-packages/flask/app.py", line 1799, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/home/ali/Desktop/cetia_api/user.py", line 63, in login
return create_token(user_inputs)
File "/home/ali/Desktop/cetia_api/user_functions.py", line 103, in create_token
access_token = create_access_token(identity=data, expires_delta=expires)
File "/usr/local/lib/python3.6/dist-packages/flask_jwt_extended/utils.py", line 156, in create_access_token
jwt_manager = _get_jwt_manager()
File "/usr/local/lib/python3.6/dist-packages/flask_jwt_extended/utils.py", line 129, in _get_jwt_manager
raise RuntimeError("You must initialize a JWTManager with this flask "
RuntimeError: You must initialize a JWTManager with this flask application before using this method有人能告诉我该怎么做吗？在过去的3天里，我什么都试过了。它已经调试了20个小时，但仍然没有修复
回答 1
Stack Overflow用户
回答已采纳
发布于 2019-08-03 21:45:35
您需要在每个位置使用相同的app。当前，您正在users.py文件中创建app，并在app.py文件中创建不同的app。
通常，您需要使用flask应用程序工厂模式(https://flask.palletsprojects.com/en/1.1.x/patterns/appfactories/)来完成此任务。示例可能如下所示：
extensions.py
from flask_jwt_extended import JWTManager
jwt = JWTManager()users.py
from flask_jwt_extended import (create_access_token, get_jwt_identity, jwt_required, get_raw_jwt)
from flask import Flask, request, Blueprint
user_blueprint = Blueprint('user_blueprint', __name__)
@user_blueprint.route(....)
@jwt_requiredapp.py
from extensions import jwt
from users import users_blueprint
def create_app():
app = Flask(__name__)
app.secret_key = 'ChangeMe!'
app.config['JWT_BLACKLIST_ENABLED'] = True
app.config['JWT_BLACKLIST_TOKEN_CHECKS'] = ['access']
jwt.init_app(app)
app.register_blueprint(user_blueprint)
return appmain.py
from app import create_app
app = create_app()
if __name__ == '__main__':
app.run()页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/57335868
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