获取时间戳方法

public static String getSequence() {
  SecureRandom seeder = new SecureRandom();
  String strValue = "";
  try {
   String strTimeMillis = getYMDHMSS();
   String strRandom = String.valueOf(nextInt(0x186a0,
     0xdbb9f, seeder.nextInt(0x5f5e100)));
   strValue = strTimeMillis + strRandom;
  } catch (Exception e) {
   e.printStackTrace();
  }
  return strValue;
 }
 
    public static  int nextInt(int iLower, int iUpper, long lSeed)
     {
         if(iUpper <= iLower)
         {
             return 0;
         } else
         {
             int iRandom = 0;
             Random random1 = new Random();
             random1.setSeed(lSeed);
             iRandom = iLower + random1.nextInt(iUpper);
             return iRandom;
         }
     }
   
   public static String getYMDHMSS()
     {
         String strYMDHMSS = "";
         Date currentDateTime = new Date();
         SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMddHHmmssSSS");
         strYMDHMSS = formatter.format(currentDateTime);
         return strYMDHMSS;
     }