Qt中如何使用QWebEngineView拦截URL请求并提取JSON数据？

// 自定义QNetworkAccessManager
class MyNetworkAccessManager : public QNetworkAccessManager {
public:
    MyNetworkAccessManager(QObject *parent = nullptr) : QNetworkAccessManager(parent) {}

    QNetworkReply *createRequest(Operation op, const QNetworkRequest &req, QIODevice *outgoingData = nullptr) override {
        // 检查目标URL
        if (req.url().toString().contains("your_target_url")) {
            QNetworkReply *reply = QNetworkAccessManager::createRequest(op, req, outgoingData);
            connect(reply, &QNetworkReply::finished, this, [this, reply]() {
                if (reply->error() == QNetworkReply::NoError) {
                    QByteArray data = reply->readAll();
                    // 检查Content-Type
                    if (reply->header(QNetworkRequest::ContentTypeHeader).toString().contains("application/json")) {
                        QJsonDocument jsonDoc = QJsonDocument::fromJson(data);
                        // 解析JSON数据
                        // ...  处理JSON数据的代码 ...
                    }
                }
                reply->deleteLater();
            });
            return reply;
        } else {
            return QNetworkAccessManager::createRequest(op, req, outgoingData);
        }
    }
};

// 主程序中使用
QWebEngineProfile *profile = new QWebEngineProfile();
MyNetworkAccessManager *manager = new MyNetworkAccessManager(profile);
profile->setNetworkAccessManager(manager);
QWebEngineView *view = new QWebEngineView(profile);
// ... 其他代码 ...