获取本机IP

/**
 * get local ip
 *
 * @return
 */
private static String localIP() {
    Enumeration<NetworkInterface> netInterfaces = null;
    try {
        netInterfaces = NetworkInterface.getNetworkInterfaces();
    } catch (SocketException e) {
        e.printStackTrace();
    }
    String localip = "";
    InetAddress ip = null;
    while (netInterfaces.hasMoreElements()) {
        NetworkInterface ni = netInterfaces.nextElement();
        List<InterfaceAddress> list = ni.getInterfaceAddresses();
        for (int i = 0; i < list.size(); i++) {
            ip = list.get(i).getAddress();
            if (!ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":") == -1) {
                localip += ip.getHostAddress().toString();
                return localip;
            }
        }
    }
    return localip;
}