Java时间戳转化汇总

String eqDate = DateUtils.parseDateToStr(System.currentTimeMillis() - 1000 * 60 * 60 * 24, DATE_FORMAT_YYYYMMDD);


//getDays(1670921076586, 1672044276586);
//获取时间戳之间所有的天数
public List<String> getDays(long time_start, long time_end) {
        try {
            List<String> result = Lists.newArrayList();
            DateFormat dateFormat = new SimpleDateFormat("yyyyMMdd");
            Date c_start = dateFormat.parse(dateFormat.format(new Date(time_start).getTime()));
            Date c_end = dateFormat.parse(dateFormat.format(new Date(time_end).getTime()));
            Calendar tempStart = Calendar.getInstance();
            tempStart.setTime(c_start);
            Calendar tempEnd = Calendar.getInstance();
            tempEnd.setTime(c_end);
            tempEnd.add(Calendar.DATE, +1);
            while (tempStart.before(tempEnd)) {
                String format = dateFormat.format(tempStart.getTime());
                result.add(format);
//                System.out.println(dateFormat.format(tempStart.getTime()));
                tempStart.add(Calendar.DAY_OF_YEAR, 1);
            }
            return result;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }