Qt 中 IPv4 字符串和 int 整形的相互转换

1 QString IPV4IntegerToString(quint32 ip) {
2     return QString("%1.%2.%3.%4")
3             .arg((ip >> 24) & 0xFF)
4             .arg((ip >> 16) & 0xFF)
5             .arg((ip >> 8) & 0xFF)
6             .arg(ip & 0xFF);
7 }

 1 quint32 IPV4StringToInteger(const QString& ip){
 2     QStringList ips = ip.split(".");
 3     if(ips.size() == 4){
 4         return ips.at(3).toInt()
 5                 | ips.at(2).toInt() << 8
 6                 | ips.at(1).toInt() << 16
 7                 | ips.at(0).toInt() << 24;
 8     }
 9     return 0;
10 }