獲取機器名：

    public String getLocalHostName() {
        String hostName;
        try {
            InetAddress addr = InetAddress.getLocalHost();
            hostName = addr.getHostName();
        } catch (Exception ex) {
            hostName = "";
        }
        return hostName;
    }

    public List<String> getNetworkAddress() {
        List<String> result = new ArrayList<String>();
        Enumeration<NetworkInterface> netInterfaces;
        try {
            netInterfaces = NetworkInterface.getNetworkInterfaces();
            InetAddress ip;
            while (netInterfaces.hasMoreElements()) {
                NetworkInterface ni = netInterfaces.nextElement();
                Enumeration<InetAddress> addresses=ni.getInetAddresses();
                while(addresses.hasMoreElements()){
                    ip = addresses.nextElement();
                    if (!ip.isLoopbackAddress() && ip.getHostAddress().indexOf(':') == -1) {
                        result.add(ip.getHostAddress());
                    }
                }
            }
            return result;
        } catch (Exception e) {
            return null;
        }
    }