[英]Flask-restx request parser returns 400 Bad Request
I'm using flask-restx
in my flask application but each time I use the swagger ui to make a request it returns this 400:我在我的烧瓶应用程序中使用
flask-restx
但每次我使用 swagger ui 发出请求时,它都会返回 400:
http://127.0.0.1:5000/api/user/register/?password=test&email=test&username=test
{
"message": "Did not attempt to load JSON data because the request Content-Type was not 'application/json'."
}
My file structure:我的文件结构:
flask-project/
├─ run.py
├─ app/
│ ├─ main/
│ │ ├─ __init__.py
│ │ ├─ api/
│ │ │ ├─ __init__.py
│ │ │ ├─ user.py
│ ├─ __init__.py
app/_init_.py
import os
from dotenv import load_dotenv
from flask import Flask
# Extensions
from flask_sqlalchemy import SQLAlchemy
from flask_marshmallow import Marshmallow
from flask_socketio import SocketIO
db = SQLAlchemy()
ma = Marshmallow()
socketio = SocketIO()
load_dotenv()
def create_app(debug=False):
from app.main.api import api_blueprint
app = Flask(__name__)
app.debug = debug
app.config['SECRET_KEY'] = os.getenv('SECRET_KEY')
app.config['SQLALCHEMY_DATABASE_URI'] = "sqlite:///database.sqlite3"
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
os.environ["OAUTHLIB_INSECURE_TRANSPORT"] = "true" # !! Only in development environment.
db.init_app(app) # Flask-SQLAlchemy must be initialized before Flask-Marshmallow.
ma.init_app(app)
socketio.init_app(app)
app.register_blueprint(api_blueprint, url_prefix='/api')
with app.app_context():
db.create_all()
@app.before_first_request
def create_tables():
""" Pre-populate specific tables """
pass
return app
user.py
from flask_restx import Namespace, Resource, reqparse
api = Namespace('user')
@api.route('/register')
@api.param('username', 'Username')
@api.param('email', 'Email')
@api.param('password', 'Password')
class CreateUser(Resource):
def put(self):
parser = reqparse.RequestParser()
parser.add_argument('username', location='json', type=str)
parser.add_argument('email', location='json', type=str)
parser.add_argument('password', location='json', type=str)
args = parser.parse_args()
return args
When I placed print statements in the put
method, I found that the method is called and anything before I define args will print.当我在
put
方法中放置 print 语句时,我发现该方法被调用,并且在我定义 args 之前的任何内容都会打印出来。 After the line where I define args nothing prints.在我定义 args 的那一行之后没有打印。 What am I doing wrong?
我究竟做错了什么?
我发现通过从 Werkzeug 2.1.2 降级到 2.0.2 解决了这个问题。
I just went through this on a project this weekend.这个周末我刚刚在一个项目上经历了这个。
api.param
is for parameters that are in the path, like /users/<user_id>
. api.param
用于路径中的参数,例如/users/<user_id>
。 The parameters you are using are query parameters, not path parameters.您使用的参数是查询参数,而不是路径参数。 So remove the 3
@api.param
decorators.所以删除 3 个
@api.param
装饰器。
As I understand it, location='json'
is for extracting data from the body of a request sent in JSON.据我了解,
location='json'
用于从以 JSON 格式发送的请求正文中提取数据。 Your parameters are query parameters.您的参数是查询参数。 Change your
parser.add_argument
calls to use location='args'
.Then after calling parse_args()
as you have in your posted code, you should be able to do args['username']
to get the value of the username
query arg, which will give None if username
arg was not given.更改您的
parser.add_argument
调用以使用location='args'
。然后在您发布的代码中调用parse_args()
之后,您应该能够执行args['username']
来获取username
查询 arg 的值,如果没有给出username
arg,它将给出 None 。
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