我正在看官方的 flask 休息文件，不能让他们的把和后的要求工作。
https://flask-restful.readthedocs.io/en/latest/quickstart.html#full-example
我使用的是Python 3.8、Flask 2.2.2和Flask-RESTful 0.3.9。
为了测试，我们发送curl请求。get和delete可以工作，但post：

curl http://localhost:5000/todos -d "task=something new" -X POST -v

* Connected to localhost (127.0.0.1) port 5000 (#0)
> POST /todos HTTP/1.1
> Host: localhost:5000
> User-Agent: curl/7.83.1
> Accept: */*
> Content-Length: 18
> Content-Type: application/x-www-form-urlencoded
>
* Mark bundle as not supporting multiuse
< HTTP/1.1 400 BAD REQUEST
< Server: Werkzeug/2.2.2 Python/3.8.1
< Date: Wed, 05 Oct 2022 18:04:54 GMT
< Content-Type: application/json
< Content-Length: 116
< Connection: close
<
{
    "message": "Did not attempt to load JSON data because the request Content-Type was not 'application/json'."
}
* Closing connection 0

我认为问题是由于我发送application/x-www-form-urlencoded引起的。所以我需要发送json格式，对吗？我尝试了这个，但是得到了同样的错误：

curl -X POST http://localhost:5000/todos -H 'Content-Type: application/json' -d '{"task":"something different"}'

{
    "message": "Did not attempt to load JSON data because the request Content-Type was not 'application/json'."
}
curl: (6) Could not resolve host: application

请求中还需要哪些内容？