获取本机ip地址（适用于linux、windows）

/**
 * 获取本地 IP
 * @return
 */
public static String getIp() {
    try{
        if (isWindowsOS()) {
            return InetAddress.getLocalHost().getHostAddress();
        } else {
            InetAddress ip = null;
            boolean bFindIP = false;
            Enumeration<NetworkInterface> netInterfaces = (Enumeration<NetworkInterface>) NetworkInterface.getNetworkInterfaces();
            while (netInterfaces.hasMoreElements()) {
                if (bFindIP) {
                    break;
                }
                NetworkInterface ni = (NetworkInterface) netInterfaces.nextElement();
                // --特定情况，可以考虑用ni.getName判断
                // 遍历所有ip
                Enumeration<InetAddress> ips = ni.getInetAddresses();
                while (ips.hasMoreElements()) {
                    ip = (InetAddress) ips.nextElement();
                    if (ip.isSiteLocalAddress() && !ip.isLoopbackAddress() // 127.开头的都是lookback地址
                            && ip.getHostAddress().indexOf(":") == -1) {
                        bFindIP = true;
                        break;
                    }
                }
            }
            if(ip!=null) {
                return ip.getHostAddress();
            } else {
                return "127.0.0.1";
            }
        }
    }catch(Exception e) {
        return null;
    }
}

/**
 * 是否WINDOWS OS
 * @return
 */
public static boolean isWindowsOS() {
    boolean isWindowsOS = false;
    String osName = System.getProperty("os.name");
    if (osName.toLowerCase().indexOf("windows") > -1) {
        isWindowsOS = true;
    }
    return isWindowsOS;
}