获取请求的主机的系统以及Ip地址

public class OSUtil {
    private final static String OS_WINDOWS = "windows";

    /**
     * 判断当前操作是否Windows.
     *
     * @return true---是Windows操作系统
     */
    public static boolean isWindowsOS() {
        boolean isWindowsOS = false;
        String osName = System.getProperty("os.name");
        if (osName.toLowerCase().contains(OS_WINDOWS)) {
            isWindowsOS = true;
        }
        return isWindowsOS;
    }

    /**
     * 获取本机IP地址，并自动区分Windows还是Linux操作系统
     *
     * @return String
     */
    public static String getLocalIP() {
        String sIP = "";
        InetAddress ip = null;
        try {
            // 如果是Windows操作系统
            if (isWindowsOS()) {
                ip = InetAddress.getLocalHost();
            }
            // 如果是Linux操作系统
            else {
                boolean bFindIP = false;
                Enumeration<NetworkInterface> netInterfaces = NetworkInterface.getNetworkInterfaces();
                while (netInterfaces.hasMoreElements()) {
                    if (bFindIP) {
                        break;
                    }
                    NetworkInterface ni = 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 = ips.nextElement();
                        // 127.开头的都是 look back 地址
                        if (ip.isSiteLocalAddress() && !ip.isLoopbackAddress()
                                && !ip.getHostAddress().contains(":")) {
                            bFindIP = true;
                            break;
                        }
                    }

                }
            }
        } catch (Exception e) {

        }

        if (null != ip) {
            sIP = ip.getHostAddress();
        }
        return sIP;
    }
}