import java.net.InetAddress;

public class ent {

    public static void main(String[] args) {

        String[] s = getAllLocalHostIP();

    }

    public static String[] getAllLocalHostIP() {

        String[] ret = null;

        try {

            String hostName = InetAddress.getLocalHost().getHostName();

            System.out.println("获取到的locasthost的Name为" + hostName + "可代表的IP列表:");

            if (hostName.length() > 0) {

                InetAddress[] addrs = InetAddress.getAllByName(hostName);

                if (addrs.length > 0) {

                    ret = new String[addrs.length];

                    for (int i = 0; i < addrs.length; i++) {

                        ret[i] = addrs[i].getHostAddress();

                        System.out.println("IP" + i + " : " + ret[i]);

                    }

                }

            }

        } catch (Exception ex) {

            ret = null;

        }

        return ret;

    }

}