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| | | package com.ruoyi.common.utils; |
| | | |
| | | import java.math.BigDecimal; |
| | | import java.text.SimpleDateFormat; |
| | | import java.util.Calendar; |
| | | import java.util.Date; |
| | | import java.util.concurrent.atomic.AtomicInteger; |
| | | |
| | | /** |
| | | * @Description |
| | | * @Author xiaochen |
| | | * @Date 2021/7/28 10:26 |
| | | */ |
| | | public class CodeGenerateUtils { |
| | | |
| | | /** |
| | | * @return |
| | | * @Description 获取商品编码 |
| | | * 商品编码规则:nanoTime(后5位)*5位随机数(10000~99999) |
| | | * @Author xiaochen |
| | | */ |
| | | public static String generateProductCode() { |
| | | long nanoPart = System.nanoTime() % 100000L; |
| | | if (nanoPart < 10000L) { |
| | | nanoPart += 10000L; |
| | | } |
| | | long randomPart = (long) (Math.random() * (90000) + 10000); |
| | | String code = "0" + new BigDecimal(nanoPart).multiply(new BigDecimal(randomPart)); |
| | | return code.substring(code.length() - 10); |
| | | } |
| | | |
| | | /** |
| | | * @return |
| | | * @Description 生成订单编号 10位 |
| | | * 订单编号规则:(10位):(年末尾*月,取后2位)+(用户ID%3.33*日取整后2位)+(timestamp*10000以内随机数,取后6位) |
| | | * @Author xiaochen |
| | | */ |
| | | public static String generateOrderSn() { |
| | | Calendar calendar = Calendar.getInstance(); |
| | | int year = calendar.get(Calendar.YEAR); |
| | | year = year % 10; |
| | | if (year == 0) year = 10; |
| | | int month = calendar.get(Calendar.MONTH) + 1; |
| | | int yearMonth = year * month; |
| | | String yearMonthPart = "0" + yearMonth; |
| | | yearMonthPart = yearMonthPart.substring(yearMonthPart.length() - 2); |
| | | |
| | | int day = calendar.get(Calendar.DAY_OF_MONTH); |
| | | double v = Math.random() * 10000; |
| | | int dayNum = (int) ((v % 3.33) * day); |
| | | String dayPart = "0" + dayNum; |
| | | dayPart = dayPart.substring(dayPart.length() - 2); |
| | | |
| | | String timestampPart = "" + (Math.random() * 10000) * (System.currentTimeMillis() / 10000); |
| | | timestampPart = timestampPart.replace(".", "").replace("E", ""); |
| | | timestampPart = timestampPart.substring(0, 6); |
| | | return yearMonthPart + dayPart + timestampPart; |
| | | } |
| | | |
| | | /** |
| | | * @return |
| | | * @Description 生成统一支付单号 规则:年(2)月(2)日(2)时(2)分(2)+timestamp*5位随机整数取后5位 |
| | | * @Author xiaochen |
| | | */ |
| | | public static String generateVolumeSn() { |
| | | Calendar calendar = Calendar.getInstance(); |
| | | SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMddhhmmss"); |
| | | String dateTime = dateFormat.format(calendar.getTime()); |
| | | dateTime = dateTime.substring(2); |
| | | String timestampPart = "" + (Math.random() * 10000) * (System.currentTimeMillis() / 10000); |
| | | timestampPart = timestampPart.replace(".", "").replace("E", ""); |
| | | timestampPart = timestampPart.substring(0, 0); |
| | | return dateTime + timestampPart; |
| | | } |
| | | |
| | | } |