Java-No.08 Java Linux下获取服务器ip地址

一、在window下获取本机ip地址

InetAddress inet = InetAddress.getLocalHost();  
System.out.println("本机的ip=" + inet.getHostAddress());

该方法在linux下获取到的ip为127.0.0.1，缘由是你linux服务器上hosts配置了 127.0.0.1 localhost

能够修改hosts下将127.0.0.1改为你的本机真实ip地址

二、linux下代码获取本机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 "";
    }