比如预约网约车的时候，是按5分钟的整点时间

 @GetMapping("/getFiveNextTime")public String fiveNextTime(@RequestParam(defaultValue = "0") Integer interval) {Calendar calendar = Calendar.getInstance();calendar.add(Calendar.MINUTE, (5 - calendar.get(Calendar.MINUTE) % 5) + interval.intValue() * 5);calendar.set(Calendar.SECOND,0);SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");long nowTime = calendar.getTimeInMillis();String timeNextTime = simpleDateFormat.format(nowTime);// System.out.println(timeNextTime);return timeNextTime;}

测试结果 如当前时间是2024-02-04 11:14
如果入参为空时：获取的时间是2024-02-04 11:15:00

如果interval=2返回的是2024-02-04 11:25:00
就是11点15分再加2个五分钟，就是11:25