*/
private String step2Login(String username,String smspasswd,String ipAddr,String macAddr,String cupSerial){
String requestInfo = VpnXmlParser.createMainAcctStrongRequestInfo(username, smspasswd,ipAddr,macAddr,cupSerial);
VpnWebservice vpnService = new VpnWebservice();
try {
return vpnService.mainAcctStrongAuthentication(requestInfo);
} catch (Exception e) {
logger.error("���ж�����֤ʧ��!",e);
}
return null;
}