java查看本机hostName可代表的ip列表【转】

java查看本机hostName可代表的ip列表

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;
    }

}