计算获得时间戳后转时分秒格式，附实验结果

/ * @Author： Be.insighted * Description： * @date Create on 2020/7/14 16:35 / ​ public class TimeUtils{   ​ /     * 把时间戳转换为：时分秒     *     * @param millisecond ：毫秒，传入单位为毫秒     */        public static String getTimeString(final long millisecond) {        if (millisecond < 1000) {            return "0" + "秒";       }        long second = millisecond / 1000;        long seconds = second % 60;        long minutes = second / 60;        long hours = 0;        if (minutes >= 60) {            hours = minutes / 60;            minutes = minutes % 60;       }        String timeString = "";        String secondString = "";        String minuteString = "";        String hourString = "";        if (seconds < 10) {            secondString = "0" + seconds + "秒";       } else {            secondString = seconds + "秒";       }        if (minutes < 10 && hours < 1) {            minuteString = minutes + "分";       } else if (minutes < 10){            minuteString =  "0" + minutes + "分";       } else {            minuteString = minutes + "分";       }        if (hours < 10) {            hourString = hours + "时";       } else {            hourString = hours + "" + "时";       }        if (hours != 0) {            timeString = hourString + minuteString + secondString;       } else {            timeString = minuteString + secondString;       }        return timeString;   } public static Date convertTimeStamp2Date(long timeStamp) { SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date date = new Date(timeStamp); try { date = df.parse(df.format(date)); } catch (ParseException e) { log.error("时间格式化错误"); } return date; } public static long dateToStamp(Date date, int hour, int minute, int second) { LocalDateTime timestamp = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime(); return timestamp.withHour(hour).withMinute(minute).withSecond(second).atZone(ZoneId.systemDefault()).toInstant().toEpochMilli(); } }

实验结果

讯享网

时间工具类

讯享网public class DateUtils { public static final String DATE_FORMAT_DATETIME_SIMPLE = "yyMMddHHmmss"; / * 年-月-日 */ public static final String DATE_FORMAT_DATEONLY = "yyyy-MM-dd"; / * 年-月-日 */ public static final String DATE_FORMAT_DATEONLY_MONTH = "yyyyMM"; / * 年-月-日 时分秒 */ public static final String DATETIME_FORMAT_DATEONLY = "yyyy-MM-dd HH:mm:ss"; / * 年-月-日 时分 */ public static final String DATE_FORMAT_DATE = "yyyy-MM-dd HH:mm"; / * dateTime formatter */ public static final DateTimeFormatter DATETIME_FORMATTER = DateTimeFormatter.ofPattern(DATETIME_FORMAT_DATEONLY); / * date formatter */ public static final DateTimeFormatter DATE_FORMATTER = DateTimeFormatter.ofPattern(DATE_FORMAT_DATEONLY); private static final ZoneId ZONE = ZoneId.systemDefault(); public static String formatDateTimeString(long unixTime, String format) { if (unixTime == 0) { return ""; } LocalDateTime dateTime = toLocalDateTime(unixTime); Date date = date(dateTime); SimpleDateFormat formator = new SimpleDateFormat(format); return formator.format(date); } public static String formatDateTimeString(long unixTime) { return formatDateTimeString(unixTime, DATETIME_FORMAT_DATEONLY); } / * 毫秒转为时间 时：分：秒 * * @param second * @return */ public static String getGapTime(long second) { if (second != 0L) { second = second / 1000; } //转换天数 long days = second / 86400; //剩余秒数 second = second % 86400; //转换小时数 long hours = second / 3600; //剩余秒数 second = second % 3600; //转换分钟 long minutes = second / 60; //剩余秒数 second = second % 60; String s = days + "天" + hours + "时" + minutes + "分" + second + "秒"; if (0 < days) { return s; } else { return hours + "时" + minutes + "分" + second + "秒"; } } / * 获取String类型时间 * * @return */ public static String convertCalender2String() { SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmm"); Calendar calendar = Calendar.getInstance(); return df.format(calendar.getTime()); } / * java.time.LocalDateTime --> java.util.Date * * @param localDateTime * @return */ public static Date date(LocalDateTime localDateTime) { if (localDateTime == null) { return null; } Instant instant = localDateTime.atZone(ZONE).toInstant(); return Date.from(instant); } / * 将字符串转换成日期，只到年月日 * @param str * @return */ public static Date strToDate(String str, String format) { try { if (StringUtils.isBlank(format)) { format = DATETIME_FORMAT_DATEONLY; } SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format); return simpleDateFormat.parse(str); } catch (Exception e) { e.printStackTrace(); } return null; } / * 将Date日期转换成String * * @param dateDate * @return */ public static String dateToStr(Date dateDate, String formatter) { SimpleDateFormat simpleDateFormat = new SimpleDateFormat(formatter); String dateString = simpleDateFormat.format(dateDate); return dateString; } / * 将Date日期转换成String * * @param dateDate * @return */ public static String dateToStr(Date dateDate) { SimpleDateFormat formatter = new SimpleDateFormat(DATE_FORMAT_DATEONLY); String dateString = formatter.format(dateDate); return dateString; } public static LocalDateTime toLocalDateTime(Date date){ Instant instant = date.toInstant(); ZoneId zone = ZoneId.systemDefault(); return LocalDateTime.ofInstant(instant, zone); } public static LocalDateTime toLocalDateTime(long dateLong){ return toLocalDateTime(new Date(dateLong)); } public static Date toDate(LocalDateTime localDateTime){ return Date.from(localDateTime.atZone(ZoneId.systemDefault()).toInstant()); } public static Date toDate(LocalDate localDate){ return Date.from(localDate.atStartOfDay().atZone(ZoneId.systemDefault()).toInstant()); } public static Date toDate(LocalTime localTime) { LocalDate localDate = LocalDate.now(); LocalDateTime localDateTime = LocalDateTime.of(localDate, localTime); ZoneId zone = ZoneId.systemDefault(); Instant instant = localDateTime.atZone(zone).toInstant(); return Date.from(instant); } public static long toLong(LocalDateTime localDateTime){ return localDateTime.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli(); } public static long toLong(LocalTime localTime){ LocalDate localDate = LocalDate.now(); LocalDateTime localDateTime = LocalDateTime.of(localDate, localTime); return localDateTime.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli(); } public static long toLong(LocalDate localDate){ LocalDateTime localDateTime = localDate.atStartOfDay(); return localDateTime.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli(); } public static boolean isToday(LocalDateTime datetime) { LocalDateTime now = LocalDateTime.now(); return (now.getYear() == datetime.getYear()) && (now.getMonthValue() == datetime.getMonthValue()) && (now.getDayOfMonth() == datetime.getDayOfMonth()); } }

秒转时间

public static String secondToTime(int seconds) { if (seconds < 0) { throw new IllegalArgumentException("Seconds must be a positive number!"); } else { int hour = seconds / 3600; int other = seconds % 3600; int minute = other / 60; int second = other % 60; StringBuilder sb = new StringBuilder(); if (hour < 10) { sb.append("0"); } sb.append(hour); sb.append(":"); if (minute < 10) { sb.append("0"); } sb.append(minute); sb.append(":"); if (second < 10) { sb.append("0"); } sb.append(second); return sb.toString(); } }