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Java将毫秒(时间戳)转时分秒格式或者年月日，日期时间转时间戳，时间工具类、秒转时间，附实验结果_毫秒值转换为日期工具

作者：花生_TL007 | 2024-02-09 13:54:23

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毫秒值转换为日期工具

计算获得时间戳后转时分秒格式，附实验结果

  1. /**
  2.  * @Author： Be.insighted
  3.  * Description：
  4.  * @date Create on 2020/7/14 16:35
  5.  **/
  6. ​
  7. public class TimeUtils{  
  8. ​
  9. /**
  10.      * 把时间戳转换为：时分秒
  11.      *
  12.      * @param millisecond ：毫秒，传入单位为毫秒
  13.      */
  14.         public static String getTimeString(final long millisecond) {
  15.         if (millisecond < 1000) {
  16.             return "0" + "秒";
  17.         }
  18.         long second = millisecond / 1000;
  19.         long seconds = second % 60;
  20.         long minutes = second / 60;
  21.         long hours = 0;
  22.         if (minutes >= 60) {
  23.             hours = minutes / 60;
  24.             minutes = minutes % 60;
  25.         }
  26.         String timeString = "";
  27.         String secondString = "";
  28.         String minuteString = "";
  29.         String hourString = "";
  30.         if (seconds < 10) {
  31.             secondString = "0" + seconds + "秒";
  32.         } else {
  33.             secondString = seconds + "秒";
  34.         }
  35.         if (minutes < 10 && hours < 1) {
  36.             minuteString = minutes + "分";
  37.         } else if (minutes < 10){
  38.             minuteString =  "0" + minutes + "分";
  39.         } else {
  40.             minuteString = minutes + "分";
  41.         }
  42.         if (hours < 10) {
  43.             hourString = hours + "时";
  44.         } else {
  45.             hourString = hours + "" + "时";
  46.         }
  47.         if (hours != 0) {
  48.             timeString = hourString + minuteString + secondString;
  49.         } else {
  50.             timeString = minuteString + secondString;
  51.         }
  52.         return timeString;
  53.     }
  54.  
  55.     public static Date convertTimeStamp2Date(long timeStamp) {
  56.         SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
  57.         Date date = new Date(timeStamp);
  58.         try {
  59.             date = df.parse(df.format(date));
  60.         } catch (ParseException e) {
  61.             log.error("时间格式化错误");
  62.         }
  63.         return date;
  64.     }
  65.  
  66.     public static long dateToStamp(Date date, int hour, int minute, int second) {
  67.             LocalDateTime timestamp =         date.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime();
  68.             return timestamp.withHour(hour).withMinute(minute).withSecond(second).atZone(ZoneId.systemDefault()).toInstant().toEpochMilli();
  69.         }
  70. }

实验结果

时间工具类

  1. public class DateUtils {
  2.  
  3.     public static final String DATE_FORMAT_DATETIME_SIMPLE = "yyMMddHHmmss";
  4.     /**
  5.      * 年-月-日
  6.      */
  7.     public static final String DATE_FORMAT_DATEONLY = "yyyy-MM-dd";
  8.  
  9.     /**
  10.      * 年-月-日
  11.      */
  12.     public static final String DATE_FORMAT_DATEONLY_MONTH = "yyyyMM";
  13.     /**
  14.      * 年-月-日 时分秒
  15.      */
  16.     public static final String DATETIME_FORMAT_DATEONLY = "yyyy-MM-dd HH:mm:ss";
  17.  
  18.     /**
  19.      * 年-月-日 时分
  20.      */
  21.     public static final String DATE_FORMAT_DATE = "yyyy-MM-dd HH:mm";
  22.  
  23.     /**
  24.      * dateTime formatter
  25.      */
  26.     public static final DateTimeFormatter DATETIME_FORMATTER = DateTimeFormatter.ofPattern(DATETIME_FORMAT_DATEONLY);
  27.     /**
  28.      * date formatter
  29.      */
  30.     public static final DateTimeFormatter DATE_FORMATTER = DateTimeFormatter.ofPattern(DATE_FORMAT_DATEONLY);
  31.  
  32.     private static final ZoneId ZONE = ZoneId.systemDefault();
  33.  
  34.     public static String formatDateTimeString(long unixTime, String format) {
  35.         if (unixTime == 0) {
  36.             return "";
  37.         }
  38.         LocalDateTime dateTime = toLocalDateTime(unixTime);
  39.         Date date = date(dateTime);
  40.         SimpleDateFormat formator = new SimpleDateFormat(format);
  41.         return formator.format(date);
  42.     }
  43.  
  44.     public static String formatDateTimeString(long unixTime) {
  45.         return formatDateTimeString(unixTime, DATETIME_FORMAT_DATEONLY);
  46.     }
  47.  
  48.     /**
  49.      * 毫秒转为时间  时：分：秒
  50.      *
  51.      * @param second
  52.      * @return
  53.      */
  54.     public static String getGapTime(long second) {
  55.         if (second != 0L) {
  56.             second = second / 1000;
  57.         }
  58.         //转换天数
  59.         long days = second / 86400;
  60.         //剩余秒数
  61.         second = second % 86400;
  62.         //转换小时数
  63.         long hours = second / 3600;
  64.         //剩余秒数
  65.         second = second % 3600;
  66.         //转换分钟
  67.         long minutes = second / 60;
  68.         //剩余秒数
  69.         second = second % 60;
  70.         String s = days + "天" + hours + "时" + minutes + "分" + second + "秒";
  71.         if (0 < days) {
  72.             return s;
  73.         } else {
  74.             return hours + "时" + minutes + "分" + second + "秒";
  75.         }
  76.     }
  77.  
  78.     /**
  79.      * 获取String类型时间
  80.      *
  81.      * @return
  82.      */
  83.     public static String convertCalender2String() {
  84.         SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmm");
  85.         Calendar calendar = Calendar.getInstance();
  86.         return df.format(calendar.getTime());
  87.     }
  88.  
  89.     /**
  90.      * java.time.LocalDateTime --> java.util.Date
  91.      *
  92.      * @param localDateTime
  93.      * @return
  94.      */
  95.     public static Date date(LocalDateTime localDateTime) {
  96.         if (localDateTime == null) {
  97.             return null;
  98.         }
  99.         Instant instant = localDateTime.atZone(ZONE).toInstant();
  100.         return Date.from(instant);
  101.     }
  102.  
  103.  
  104.     /**
  105.      * 将字符串转换成日期，只到年月日
  106.      * @param str
  107.      * @return
  108.      */
  109.     public static Date strToDate(String str, String format) {
  110.         try {
  111.             if (StringUtils.isBlank(format)) {
  112.                 format = DATETIME_FORMAT_DATEONLY;
  113.             }
  114.             SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format);
  115.             return simpleDateFormat.parse(str);
  116.  
  117.         } catch (Exception e) {
  118.             e.printStackTrace();
  119.         }
  120.         return null;
  121.     }
  122.  
  123.  
  124.     /**
  125.      * 将Date日期转换成String
  126.      *
  127.      * @param dateDate
  128.      * @return
  129.      */
  130.     public static String dateToStr(Date dateDate, String formatter) {
  131.         SimpleDateFormat simpleDateFormat = new SimpleDateFormat(formatter);
  132.         String dateString = simpleDateFormat.format(dateDate);
  133.         return dateString;
  134.     }
  135.  
  136.     /**
  137.      * 将Date日期转换成String
  138.      *
  139.      * @param dateDate
  140.      * @return
  141.      */
  142.     public static String dateToStr(Date dateDate) {
  143.         SimpleDateFormat formatter = new SimpleDateFormat(DATE_FORMAT_DATEONLY);
  144.         String dateString = formatter.format(dateDate);
  145.         return dateString;
  146.     }
  147.  
  148.  
  149.     public static LocalDateTime toLocalDateTime(Date date){
  150.  
  151.         Instant instant = date.toInstant();
  152.         ZoneId zone = ZoneId.systemDefault();
  153.         return LocalDateTime.ofInstant(instant, zone);
  154.     }
  155.  
  156.     public static LocalDateTime toLocalDateTime(long dateLong){
  157.  
  158.         return toLocalDateTime(new Date(dateLong));
  159.     }
  160.  
  161.     public static Date toDate(LocalDateTime localDateTime){
  162.  
  163.         return Date.from(localDateTime.atZone(ZoneId.systemDefault()).toInstant());
  164.     }
  165.  
  166.     public static Date toDate(LocalDate localDate){
  167.  
  168.         return Date.from(localDate.atStartOfDay().atZone(ZoneId.systemDefault()).toInstant());
  169.     }
  170.  
  171.     public static Date toDate(LocalTime localTime) {
  172.  
  173.         LocalDate localDate = LocalDate.now();
  174.         LocalDateTime localDateTime = LocalDateTime.of(localDate, localTime);
  175.         ZoneId zone = ZoneId.systemDefault();
  176.         Instant instant = localDateTime.atZone(zone).toInstant();
  177.         return  Date.from(instant);
  178.     }
  179.  
  180.     public static long toLong(LocalDateTime localDateTime){
  181.  
  182.         return  localDateTime.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli();
  183.     }
  184.  
  185.     public static long toLong(LocalTime localTime){
  186.  
  187.         LocalDate localDate = LocalDate.now();
  188.         LocalDateTime localDateTime = LocalDateTime.of(localDate, localTime);
  189.         return  localDateTime.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli();
  190.     }
  191.  
  192.     public static long toLong(LocalDate localDate){
  193.  
  194.         LocalDateTime localDateTime = localDate.atStartOfDay();
  195.         return  localDateTime.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli();
  196.     }
  197.  
  198.     public static boolean isToday(LocalDateTime datetime) {
  199.         LocalDateTime now = LocalDateTime.now();
  200.         return (now.getYear() == datetime.getYear()) && (now.getMonthValue() == datetime.getMonthValue()) && (now.getDayOfMonth() == datetime.getDayOfMonth());
  201.     }
  202.  
  203. }

秒转时间

  1. public static String secondToTime(int seconds) {
  2.         if (seconds < 0) {
  3.             throw new IllegalArgumentException("Seconds must be a positive number!");
  4.         } else {
  5.             int hour = seconds / 3600;
  6.             int other = seconds % 3600;
  7.             int minute = other / 60;
  8.             int second = other % 60;
  9.             StringBuilder sb = new StringBuilder();
  10.             if (hour < 10) {
  11.                 sb.append("0");
  12.             }
  13.  
  14.             sb.append(hour);
  15.             sb.append(":");
  16.             if (minute < 10) {
  17.                 sb.append("0");
  18.             }
  19.  
  20.             sb.append(minute);
  21.             sb.append(":");
  22.             if (second < 10) {
  23.                 sb.append("0");
  24.             }
  25.  
  26.             sb.append(second);
  27.             return sb.toString();
  28.         }
  29.     }

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