java获取当天开始，结束时间

最新推荐文章于 2024-10-29 15:25:04 发布

原创最新推荐文章于 2024-10-29 15:25:04 发布 · 7.9k 阅读

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博客内容主要围绕时间获取展开，包含获取当天、每周、每月的开始和结束时间，这些时间获取操作在信息技术领域的数据处理、统计等场景中较为常用。

//获取当天结束时间

public static Date getEndTime(Date date) {
    Calendar dateEnd = Calendar.getInstance();
    dateEnd.setTime(date);
    dateEnd.set(Calendar.HOUR_OF_DAY, 23);
    dateEnd.set(Calendar.MINUTE, 59);
    dateEnd.set(Calendar.SECOND, 59);
    return dateEnd.getTime();
}

public static Date getEndTimeOfDay(Date date) {
   LocalDate toDay = toLocalData(date);
   LocalDateTime localDateTime = toDay.atTime(23, 59, 59, 999);
   ZonedDateTime zonedDateTime = localDateTime.atZone(ZoneId.systemDefault());
   return Date.from(zonedDateTime.toInstant());
}

//获取当天开始时间

public static Date getStartTime(Date date) {
    Calendar dateStart = Calendar.getInstance();
    dateStart.setTime(date);
    dateStart.set(Calendar.HOUR_OF_DAY, 0);
    dateStart.set(Calendar.MINUTE, 0);
    dateStart.set(Calendar.SECOND, 0);
    return dateStart.getTime();
}

public static Date getBeginTimeOfDay(Date date) {
   LocalDate toDay = toLocalData(date);
   LocalDateTime localDateTime = toDay.atTime(0, 0, 0);
   ZonedDateTime zonedDateTime = localDateTime.atZone(ZoneId.systemDefault());
   return Date.from(zonedDateTime.toInstant());
}

//每周开始时间

public static Date getBeginDayOfWeek(Date date) {
   Calendar c = new GregorianCalendar();
   c.setFirstDayOfWeek(Calendar.MONDAY);
   c.setTime(date);
   c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek()); // Monday
   LocalDate toDay = toLocalData(c.getTime());
   LocalDateTime localDateTime = toDay.atTime(0, 0, 0);
   ZonedDateTime zonedDateTime = localDateTime.atZone(ZoneId.systemDefault());
   return Date.from(zonedDateTime.toInstant());
}

//每周的结束时间

public static Date getEndDayOfWeek(Date date) {
   Calendar c = new GregorianCalendar();
   c.setFirstDayOfWeek(Calendar.MONDAY);
   c.setTime(date);
   c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek() + 6); // Sunday
   LocalDate toDay = toLocalData(c.getTime());
   LocalDateTime localDateTime = toDay.atTime(23, 59, 59, 999);
   ZonedDateTime zonedDateTime = localDateTime.atZone(ZoneId.systemDefault());
   return Date.from(zonedDateTime.toInstant());
}

//一个月的开始时间

public static Date getBeginTimeOfMonth(Date date) {
   LocalDate ld = toLocalData(date);
   YearMonth yearMonth = YearMonth.of(ld.getYear(), ld.getMonth());
   LocalDate localDate = yearMonth.atDay(1);
   LocalDateTime startOfDay = localDate.atStartOfDay();
   ZonedDateTime zonedDateTime = startOfDay.atZone(ZoneId.systemDefault());
   return Date.from(zonedDateTime.toInstant());
}

//一个月的结束时间

public static Date getEndTimeOfMonth(Date date) {
   LocalDate ld = toLocalData(date);
   YearMonth yearMonth = YearMonth.of(ld.getYear(), ld.getMonth());
   LocalDate endOfMonth = yearMonth.atEndOfMonth();
   LocalDateTime localDateTime = endOfMonth.atTime(23, 59, 59, 999);
   ZonedDateTime zonedDateTime = localDateTime.atZone(ZoneId.systemDefault());
   return Date.from(zonedDateTime.toInstant());
}

//前几个月，字符串形式

public static String[] getBeforeMonth(int num) {
   final String[] result = new String[num];
   LocalDate localDate = LocalDate.now();
   for (int i = 0; i < num; i++) {
      result[i] = (localDate.getMonthValue()) + "月";
      localDate = localDate.minusMonths(1);
   }
   return result;
}
//后几个月，字符串形式
public static String[] getAfterMonth(int num) {
   final String[] result = new String[num];
   LocalDate localDate = LocalDate.now();
   for (int i = 0; i < num; i++) {
      result[i] = (localDate.getMonthValue()) + "月";
      localDate = localDate.plusMonths(1);
   }
   return result;
}
//前几个月，integer类型
public static Integer[] getBeMonth(int num) {
   final Integer[] result = new Integer[num];
   LocalDate localDate = LocalDate.now();
   for (int i = 0; i < num; i++) {
      result[i] = (localDate.getMonthValue());
      localDate = localDate.minusMonths(1);
   }
   return result;
}