如何导出qml中的字段信息

import QtQuick 2.15
import QtQuick.Controls 2.15
import QtQuick.Layouts 1.15
import Qt.labs.qmlmodels 1.0

ApplicationWindow {
    visible: true
    width: 640
    height: 480
    title: qsTr("QML Field Export Example")

    property var dataModel: [
        { "name": "Alice", "age": 30 },
        { "name": "Bob", "age": 25 }
    ]

    Button {
        text: "Export Data"
        onClicked: {
            var json = JSON.stringify(dataModel);
            console.log(json);
            // 这里可以将json字符串写入文件或发送到服务器
        }
    }

    ListView {
        anchors.fill: parent
        model: dataModel
        delegate: Text {
            text: name + ", " + age
        }
    }
}