获取IP地址的方法

获取Ipv4/Ipv6地址

​​​​​​​public static InetAddress getFirstNonLoopbackAddress(boolean preferIpv4, boolean preferIPv6) throws SocketException {
    Enumeration en = NetworkInterface.getNetworkInterfaces();
    while (en.hasMoreElements()) {
        NetworkInterface i = (NetworkInterface) en.nextElement();
        for (Enumeration en2 = i.getInetAddresses(); en2.hasMoreElements();) {
            InetAddress addr = (InetAddress) en2.nextElement();
            if (!addr.isLoopbackAddress()) {
                if (addr instanceof Inet4Address) {
                    if (preferIPv6) {
                        continue;
                    }
                    return addr;
                }
                if (addr instanceof Inet6Address) {
                    if (preferIpv4) {
                        continue;
                    }
                    return addr;
                }
            }
        }
    }
    return null;
}

获取所有ip地址

public static List<String> getLocalIPList() {
    List<String> ipList = new ArrayList<String>();
    try {
        Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
        NetworkInterface networkInterface;
        Enumeration<InetAddress> inetAddresses;
        InetAddress inetAddress;
        String ip;
        while (networkInterfaces.hasMoreElements()) {
            networkInterface = networkInterfaces.nextElement();
            inetAddresses = networkInterface.getInetAddresses();
            while (inetAddresses.hasMoreElements()) {
                inetAddress = inetAddresses.nextElement();
                if (inetAddress != null && inetAddress instanceof Inet4Address) { // IPV4
                    ip = inetAddress.getHostAddress();
                    ipList.add(ip);
                }
            }
        }
    } catch (SocketException e) {
        e.printStackTrace();
    }
    return ipList;
}