/**  * 时间戳  * @return  */ public static String CreateDate(){  String dataStr=null;   SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddhhmmss");  dataStr = sdf.format(new Date());  return dataStr; } /**  * 失效时间 当前时间+10min  * @param num  * @return  */ public static String expriredDate(String dataStr){  String aDataStr=null;  try {   SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddhhmmss");   Date date = sdf.parse(dataStr);   date.setTime(date.getTime()+10*60*1000);   aDataStr=sdf.format(date);  } catch (ParseException e) {   e.printStackTrace();  }  return aDataStr; }