如何通过socket发送QMap？

QMap<QString, QVariant> data;
data["name"] = "John";
data["age"] = 25;

QJsonDocument jsonDoc(QJsonObject::fromVariantMap(data));
QByteArray jsonData = jsonDoc.toJson();

QTcpSocket socket;
socket.connectToHost("127.0.0.1", 1234); // 连接到接收端的IP地址和端口号

if (socket.waitForConnected()) {
    socket.write(jsonData); // 发送数据
    socket.waitForBytesWritten();
    socket.disconnectFromHost();
}

QTcpServer server;
server.listen(QHostAddress::Any, 1234); // 监听指定端口

if (server.waitForNewConnection()) {
    QTcpSocket* socket = server.nextPendingConnection();
    if (socket->state() == QAbstractSocket::ConnectedState) {
        QByteArray receivedData = socket->readAll(); // 接收数据

        QJsonDocument jsonDoc = QJsonDocument::fromJson(receivedData);
        QMap<QString, QVariant> receivedMap = jsonDoc.object().toVariantMap();

        // 对接收到的QMap进行处理
        QString name = receivedMap["name"].toString();
        int age = receivedMap["age"].toInt();

        qDebug() << "Received data: name=" << name << ", age=" << age;

        socket->disconnectFromHost();
    }
    socket->deleteLater();
}