// 生成一个随机的UUID
QUuid uuid = QUuid::createUuid();

// 将UUID转换为字符串
QString uuidStr = uuid.toString(QUuid::WithoutBraces);

// 计算MD5哈希值
QByteArray hash = QCryptographicHash::hash(uuidStr.toUtf8(), QCryptographicHash::Md5);

// 提取前8个字节并转换为64位整数
quint64 intValue = 0;
for (int i = 0; i < 8; ++i) {
    intValue |= static_cast<quint64>(static_cast<unsigned char>(hash[i])) << (56 - i * 8);
}

qDebug() << "Generated UUID:" << uuid.toString();
qDebug() << "Converted to integer:" << intValue;