为什么当我尝试使用 QWebEngineHttpRequest (PyQt5) 发送 POST 请求时出现错误？

Question

我尝试从源代码获取 JSON Object ，但只得到错误。 现在我试图了解我做错了什么。 此代码适用于其他资源。 也许这不是代码问题，而是网络源代码。

import sys
import json
from PyQt5.QtCore import QByteArray, QUrl
from PyQt5.QtWidgets import QApplication
from PyQt5.QtWebEngineCore import QWebEngineHttpRequest
from PyQt5.QtWebEngineWidgets import QWebEnginePage, QWebEngineSettings
from pprint import pprint


def on_load_finished():
    """Handle response"""
    engine.toPlainText(handle_to_html)  # get json


def handle_to_html(html):
    """Handle html"""
    print(html)
    QApplication.quit()


if __name__ == "__main__":

    app = QApplication(sys.argv)
    engine = QWebEnginePage()
    url = "https://sportsapi.betway.com/api/Events/V2/GetEvents"
    request = QWebEngineHttpRequest(url=QUrl(url), method=QWebEngineHttpRequest.Post)
    request.setHeader(QByteArray(b"Content-Type"), QByteArray(b"application/json"))

    payload = {
        "LanguageId": 1,
        "ClientTypeId": 2,
        "BrandId": 3,
        "JurisdictionId": 1,
        "ClientIntegratorId": 1,
        "ExternalIds": [9032262, 9038528, 9037778],
        "MarketCName": "win-draw-win",
        "ScoreboardRequest": {"ScoreboardType": 3, "IncidentRequest": {}},
        "BrowserId": 3,
        "OsId": 3,
        "ApplicationVersion": "",
        "BrowserVersion": "97.0.4692.99",
        "OsVersion": "NT 10.0",
        "SessionId": "null",
        "TerritoryId": 227,
        "CorrelationId": "06779075-21e2-4ba8-8e91-d71a981621fe",
        "VisitId": "d1088cdf-13a8-42d0-be90-b34fd1332c36",
        "ViewName": "sports",
        "JourneyId": "833a4c0c-3354-499f-9d52-949df6d159f9",
    }
    request.setPostData(bytes(json.dumps(payload), "utf-8"))
    engine.load(request)
    engine.loadFinished.connect(on_load_finished)
    app.exec_()

错误看起来像

This XML file does not appear to have any style information associated with it. The document tree is shown below.

<Error>
<Message>An error has occurred.</Message>
</Error>

也许这不是代码问题，而是网络源代码。