Java-No.08 Java Linux下獲取服務器ip地址

一、在window下獲取本機ip地址

InetAddress inet = InetAddress.getLocalHost();  
System.out.println("本機的ip=" + inet.getHostAddress());

該方法在linux下獲取到的ip爲127.0.0.1，緣由是你linux服務器上hosts配置了 127.0.0.1 localhost

能夠修改hosts下將127.0.0.1改爲你的本機真實ip地址

二、linux下代碼獲取本機ip地址

public static String getLocalHostIP() {
        try {
            for (Enumeration<NetworkInterface> nis = NetworkInterface
                    .getNetworkInterfaces(); nis.hasMoreElements();) {
                NetworkInterface ni = nis.nextElement();
                if (ni.isLoopback() || !ni.isUp())
                    continue;
                for (Enumeration<InetAddress> ias = ni.getInetAddresses(); ias.hasMoreElements();) {
                    InetAddress ia = ias.nextElement();
                    if (ia instanceof Inet6Address) continue;
                    return ia.getHostAddress();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return "";
    }