烧瓶应用程序请求。get_json()返回(省略号,省略号)而不是json

我正在构建一个简单的Flask API,我正在测试一个来自Postman的post请求, 这样地 {"name": "Frosty"} .这是我的类,用于处理对POST请求所在端点的请求:

from http import HTTPStatus
from flask.views import MethodView
from flask import Blueprint
from injector import singleton, inject
from flask import jsonify, abort, request
    
    
@singleton
class PetsController(MethodView):
    @inject
    def __init__(self) -> None:
        super().__init__()
        self.pets = [
            {"id": 1, "name": "Snoopy"},
            {"id": 2, "name": "Furball"},
            {"id": 3, "name": "Alaska"},
        ]

def configure(self):
    self.pets_view = Blueprint("pets_view", __name__)
    self.pets_view.add_url_rule("/pets/", view_func=PetsController.as_view("pets"))

def get(self):
    return jsonify({"pets": self.pets})

def post(self):
    data = request.get_json()
    if not data or not "name" in data:
        return jsonify(
            message=f"Data missing from POST request {data}",
            status=HTTPStatus.BAD_REQUEST.value,
        )

    new_pet = {"id": len(self.pets) + 1, "name": data["name"]}
    self.pets.append(new_pet)
    return jsonify(
        message=f"new pet added: {new_pet}",
        status=HTTPStatus.CREATED.value,
    )

我收到了一个错误的请求响应,因为 request.get_json() 公元 request.json 两者都返回这个元组 (Ellipsis, Ellipsis) .

知道为什么吗?