Question

我正在使用Flask，而我只是做了以下教程：https://www.youtube.com/watch?v=J5bIPtEbS0Q

这是代码：

from flask import Flask, jsonify, request, make_response
import jwt
import datetime
from functools import wraps

app = Flask(__name__)

app.config['SECRET_KEY'] = 'thisisthesecretkey'

def token_required(f):
    @wraps(f)
    def decorated(*args, **kwargs):
        token = request.args.get('token')

        if not token:
            return jsonify({'message' : 'Token is missing!'}), 403

        try:
            data = jwt.decode(token, app.config['SECRET_KEY'])
        except:
            return jsonify({'message' : 'Token is invalid'}), 403

        return f(*args, **kwargs)


@app.route('/unprotected')
def unprotected():
    return jsonify({'message' : 'Anyone can view this!'})

@app.route('/protected')
@token_required
def protected():
    return jsonify({'message' : 'This is only available for people with valid tokens.'})

@app.route('/login')
def login():
    auth = request.authorization

    if auth and auth.password == 'asdf':
        token = jwt.encode({'user' : auth.username, 'exp' : datetime.datetime.utcnow() + datetime.timedelta(minutes=30)}, app.config['SECRET_KEY'])

        return jsonify({'token' : token.decode('UTF-8')})

    return make_response('Could not verify!', 401, {'WWW-Authenticate' : 'Basic realm="Login Required"'})

if __name__ == '__main__':
    app.run(debug=True)

我做了视频中的所有操作，但出现以下错误：

/home/one/systemx/test_api$ python flask_authentication.py
Traceback (most recent call last):
  File "flask_authentication.py", line 31, in <module>
    @token_required
  File "/home/one/.local/lib/python2.7/site-packages/flask/app.py", line 1250, in decorator
    self.add_url_rule(rule, endpoint, f, **options)
  File "/home/one/.local/lib/python2.7/site-packages/flask/app.py", line 66, in wrapper_func
    return f(self, *args, **kwargs)
  File "/home/one/.local/lib/python2.7/site-packages/flask/app.py", line 1180, in add_url_rule
    endpoint = _endpoint_from_view_func(view_func)
  File "/home/one/.local/lib/python2.7/site-packages/flask/helpers.py", line 90, in _endpoint_from_view_func
    assert view_func is not None, 'expected view func if endpoint ' \
AssertionError: expected view func if endpoint is not provided.

有人知道问题出在哪里吗？

我发现错误出在第30行：

@token_required

当我添加它时。

但是我不知道为什么。

Python：Flask AssertionError->如果未提供端点，则为预期的视图函数

0 个答案: