获取十位时间戳，格式化时间以及让时间加上多少分钟

private int getTime(int a){
    Calendar calendar = Calendar.getInstance();
    calendar.set(Calendar.HOUR_OF_DAY, a);
    calendar.set(Calendar.MINUTE, 0);
    calendar.set(Calendar.SECOND, 0);
    int hourTime = (int) (calendar.getTimeInMillis() / 1000);
    return hourTime ;
}

int hourTime = getTime(8); //获取指定时间  指定当天哪个时间

formatTime(hourTime)；

/**
 * 格式时间戳
 *
 * @param timeStamp 十位时间戳
 */
private static String formatTime(Integer timeStamp) {
    Date date = new Date(Long.parseLong(timeStamp + "000"));
    String strDateFormat = "yyyy-MM-dd HH:mm:ss";
    SimpleDateFormat sdf = new SimpleDateFormat(strDateFormat);
    return sdf.format(date);
}

以上是处理指定的时间比如指定要今天的  2023-05-18 08:00:00

String startTime = LocalDate.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd"));//获取当前时间

String yyyyMMddHHmmss = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyyMMddHHmmss"));

 String nowDate = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
            

Date startWorkTime = sdf.parse(workTimeDto.getStartWorkTime()); //获取这个开线时间
Date expireTime = new Date(startWorkTime.getTime() + 30*60*1000); //让时间加上30分钟