mac地址字符串转unsigned char数组

要将mac地址字符串转换为unsigned char数组，您可以使用以下代码：

QString macAddress = "A1-B2-C3-D4-E5-F6";
QVector<unsigned char> byteArray = hexStringToByteArray(macAddress);

// 将QVector<unsigned char>转换为unsigned char数组
unsigned char* byteArr = byteArray.data();

下面是实现hexStringToByteArray函数的代码：

QVector<unsigned char> hexStringToByteArray(const QString& strMac) {
    QVector<unsigned char> vecMac;
    if (strMac.size() != 17) {
        return vecMac;
    }

    for (int i = 0; i < strMac.size(); i += 3) {
        QString num = strMac.mid(i, 2);
        bool ok = false;
        vecMac.push_back(num.toUInt(&ok, 16));
        if (!ok) {
            return QVector<unsigned char>();
        }
    }

    return vecMac;
}