Python FlaskRestful 错误：请求 ContentType 不是 'applicationjson'."}

我当时在关注this tutorial人，一切都很顺利.然后他介绍了reqparse，我也跟着介绍.我试着测试我的代码，我得到了这个错误

我不知道我是否遗漏了一些非常明显的东西，但我很确定我完全复制了他的代码.代码如下:

from flask import Flask, request
from flask_restful import Api, Resource, reqparse

app = Flask(__name__)
api = Api(app)

#basic get and post
names = {"sai": {"age": 19, "gender": "male"},
            "bill": {"age": 23, "gender": "male"}}
class HelloWorld(Resource):
    def get(self, name, numb):
        return names[name]

    def post(self):
        return {"data": "Posted"}

api.add_resource(HelloWorld, "/helloworld/<string:name>/<int:numb>")

# getting larger data
pictures = {}
class picture(Resource):
    def get(self, picture_id):
        return pictures[picture_id]

    def put(self, picture_id):
        print(request.form['likes'])
        pass

api.add_resource(picture, "/picture/<int:picture_id>")

# reqparse
video_put_args = reqparse.RequestParser() # make new request parser object to make sure it fits the correct guidelines
video_put_args.add_argument("name", type=str, help="Name of the video")
video_put_args.add_argument("views", type=int, help="Views on the video")
video_put_args.add_argument("likes", type=int, help="Likes on the video")

videos = {}

class Video(Resource):
    def get(self, video_id):
        return videos[video_id]

    def post(self, video_id):
        args = video_put_args.parse_args()
        print(request.form['likes'])
        return {video_id: args}

api.add_resource(Video, "/video/<int:video_id>")

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

测试休息.py公司

import requests

BASE = "http://127.0.0.1:5000/"

response = requests.post(BASE + 'video/1', {"likes": 10})

print(response.json())