批次号生成

/**
 *  批次号生成
 *  生成规则：当天日期[8位]+序列号[24位]，如：20181031383385283484579432669936
 * @return
 */
public static String getRandomBatchNum() {
   SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd");
       String format = dateFormat.format(new Date());
       int max=24;
       int min=24;
       Random random = new Random();
       int s = random.nextInt(max)%(max-min+1) + min;
       StringBuffer buffer =new StringBuffer();
       for(int i=0;i<s;i++){
           Integer val = (int)(Math.random()*9+1);
           buffer.append(val.toString());
       }
   return format+buffer.toString();
}

/**
 * 生成唯一序列 规则：当前时间+6位随机数(yyyyMMddHHmmss123345)
 * @param shortTableName 表名(缩写) 例：uc - user_customer
 * @return
 * @throws Exception
 */
public static synchronized String getSequence(String shortTableName) throws Exception {
   String currentDate = getCurrentDate("yyyyMMddHHmmssS");
   String random = random(8);
   return shortTableName + currentDate + random;
}