Python Flask：未發生API調用，導致500個內部服務器錯誤

Question

我對Python Flask相當flask_restplus ，請使用flask_restplus建立一個簡單的項目來進行基本的API調用。 我可以在龐大的頁面中看到我的API，但這會導致500個內部服務器錯誤

run.py：

import os

from flask_script import Manager
from app.main import create_app

from app.app import blueprint

app = create_app(os.getenv('BOILERPLATE_ENV') or 'dev')
app.register_blueprint(blueprint)

app.app_context().push()

manager = Manager(app)


@manager.command
def run():
    app.run(threaded=True)


if __name__ == '__main__':
    manager.run()

app.py：

from flask_restplus import Api
from flask import Blueprint
from .main.controller.hello_controller import api as hello

blueprint = Blueprint('api', __name__)

api = Api(blueprint,
          title='My RESTful API',
          version='1.0',
          description='My flask restplus web service'
          )

api.add_namespace(hello, path='/hello')

hello_controller.py：

import json
from flask import request
from flask_restful import Resource

api = Namespace('hello', description='hello world')

@api.route('/', methods=['GET'])
class Hello(Resource):
    @api.param('name1', 'Name1')
    @api.param('name2', 'Name2')
    @api.response(200, 'hello said successfully')
    @api.doc('Hello Names')
    def get(self, name1, name2):
        """ Get Hello names """
        return json.dump("Hello" + name1 + "and Hello" + name2), 200

也嘗試過這兩種返回類型，但是沒有運氣。

return json.dumps({'data': "Hello" + name1 + "and Hello" + name2, 'success': 200})

return Response(json.dumps("Hello" + name1 + "and Hello" + name2), mimetype='application/json')

當我嘗試從swagger UI執行上述API調用時，會導致500 Internal server error 。 首先，它甚至沒有達到我的API路由/方法。 這是來自控制台的錯誤：

    ERROR:flask.app:Exception on /hello/ [GET]
Traceback (most recent call last):
  File "/Users/myuser/PycharmProjects/myDev/venv/lib/python3.6/site-packages/flask/app.py", line 1832, in full_dispatch_request
    rv = self.dispatch_request()
  File "/Users/myuser/PycharmProjects/myDev/venv/lib/python3.6/site-packages/flask/app.py", line 1818, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/Users/myuser/PycharmProjects/myDev/venv/lib/python3.6/site-packages/flask_restplus/api.py", line 325, in wrapper
    resp = resource(*args, **kwargs)
  File "/Users/myuser/PycharmProjects/myDev/venv/lib/python3.6/site-packages/flask/views.py", line 87, in view
    self = view.view_class(*class_args, **class_kwargs)
TypeError: object() takes no parameters
INFO:werkwal:127.0.0.1 - - [24/Jun/2019 21:43:27] "GET /hello/ HTTP/1.1" 500 -

如果我嘗試使用以下路由： @api.route('/<name1>/<name2>', methods=['GET'])並從頭開始執行，則永久加載並且什么也沒有發生。仍然錯誤是相同的：

    ERROR:flask.app:Exception on /hello/ [GET]
Traceback (most recent call last):
  File "/Users/myuser/PycharmProjects/myDev/venv/lib/python3.6/site-packages/flask/app.py", line 1832, in full_dispatch_request
    rv = self.dispatch_request()
  File "/Users/myuser/PycharmProjects/myDev/venv/lib/python3.6/site-packages/flask/app.py", line 1818, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/Users/myuser/PycharmProjects/myDev/venv/lib/python3.6/site-packages/flask_restplus/api.py", line 325, in wrapper
    resp = resource(*args, **kwargs)
  File "/Users/myuser/PycharmProjects/myDev/venv/lib/python3.6/site-packages/flask/views.py", line 87, in view
    self = view.view_class(*class_args, **class_kwargs)
TypeError: object() takes no parameters
    INFO:werkwla:127.0.0.1 - - [24/Jun/2019 21:19:29] "GET /hello/?name1=mike&name2=sam HTTP/1.1" 500 -

任何幫助表示贊賞！

Answer 1

更新：您導入flask_restful不flask_restplus在hello_controller 。 這個示例有一些錯誤（我認為是從復制到SO）。 因此，很難說出什么是真正的錯誤或復制錯誤。 如果沒有一個干凈的例子，那是我能做到的最好的，對不起！ 請參閱此處以獲取使用藍圖的示例https://flask-restplus.readthedocs.io/en/stable/scaling.html#use-with-blueprints