关于java:按月季度半年年将时间区间切分

修复splitToHalfOfYears按半年切割

//将时间段按星期宰割   public static final List<Range> splitToWeeks(Date start, Date end) {       List<Range> result = new ArrayList<>();       result.add(Range.create(start));       Date from = new Date(start.getTime() + 7L * 24 * 3600 * 1000);       Date weekEnd = cn.hutool.core.date.DateUtil.endOfWeek(end);       while (from.compareTo(weekEnd) <= 0) {           Date dt = cn.hutool.core.date.DateUtil.beginOfWeek(from);           CollectionUtil.getLast(result).end(new Date(dt.getTime() - 24L * 3600 * 1000));           result.add(Range.create(dt));           from.setTime(from.getTime() + 7L * 24 * 3600 * 1000);       }       CollectionUtil.getLast(result).end(end);       return result;   }   //将时间段依照月宰割   public static final List<Range> splitToMonths(Date start, Date end) {       List<Range> result = new ArrayList<>();       result.add(Range.create(start));       Calendar cal = Calendar.getInstance();       cal.setTime(start);       cal.add(Calendar.MONTH, 1);       Date monthEnd = cn.hutool.core.date.DateUtil.endOfMonth(end);       while (cal.getTimeInMillis() <= monthEnd.getTime()) {           Date dt = cn.hutool.core.date.DateUtil.beginOfMonth(cal.getTime());           CollectionUtil.getLast(result).end(new Date(dt.getTime() - 24L * 3600 * 1000));           result.add(Range.create(dt));           cal.add(Calendar.MONTH, 1);       }       CollectionUtil.getLast(result).end(end);       return result;   }   //将时间段依照季度宰割   public static final List<Range> splitToQuarts(Date start, Date end) {       List<Range> result = new ArrayList<>();       result.add(Range.create(start));       Calendar cal = Calendar.getInstance();       cal.setTime(start);       cal.add(Calendar.MONTH, 3);       Date quartEnd = cn.hutool.core.date.DateUtil.endOfQuarter(end);       while (cal.getTimeInMillis() <= quartEnd.getTime()) {           Date dt = cn.hutool.core.date.DateUtil.beginOfQuarter(cal.getTime());           CollectionUtil.getLast(result).end(new Date(dt.getTime() - 24L * 3600 * 1000));           result.add(Range.create(dt));           cal.add(Calendar.MONTH, 3);       }       CollectionUtil.getLast(result).end(end);       return result;   }   //将时间段依照半年宰割   public static final List<Range> splitToHalfOfYears(Date start, Date end) {       List<Range> result = new ArrayList<>();       result.add(Range.create(start));       Calendar cal = Calendar.getInstance();       cal.setTime(start);       cal.add(Calendar.MONTH, 6);       int mon = cal.get(Calendar.MONTH);       int tmpMon = DateUtil.month(end);       Calendar tmp = Calendar.getInstance();       if (tmpMon < 6) {           tmp.setTimeInMillis(cal.getTimeInMillis());           tmp.set(Calendar.MONTH, 5);       } else {           tmp.setTimeInMillis(cal.getTimeInMillis());           tmp.set(Calendar.MONTH, 11);       }       tmp.set(Calendar.YEAR, DateUtil.year(end));       Calendar halfYearEnd = cn.hutool.core.date.DateUtil.endOfMonth(tmp);       long timeInMillis = halfYearEnd.getTimeInMillis();       while (cal.getTimeInMillis() <= timeInMillis) {           mon = cal.get(Calendar.MONTH);           Calendar cal1 = Calendar.getInstance();           if (mon < 6) {               cal1.setTimeInMillis(cal.getTimeInMillis());               cal1.set(Calendar.MONTH, 0);           } else {               cal1.setTimeInMillis(cal.getTimeInMillis());               cal1.set(Calendar.MONTH, 6);           }           Date dt = cn.hutool.core.date.DateUtil.beginOfMonth(cal1.getTime());           CollectionUtil.getLast(result).end(new Date(dt.getTime() - 24L * 3600 * 1000));           result.add(Range.create(dt));           cal.add(Calendar.MONTH, 6);       }       CollectionUtil.getLast(result).end(end);       return result;   }   //将时间段依照年宰割   public static final List<Range> splitToYears(Date start, Date end) {       List<Range> result = new ArrayList<>();       result.add(Range.create(start));       Calendar cal = Calendar.getInstance();       cal.setTime(start);       cal.add(Calendar.YEAR, 1);       Date yearEnd = cn.hutool.core.date.DateUtil.endOfYear(end);       while (cal.getTimeInMillis() <= yearEnd.getTime()) {           Date dt = cn.hutool.core.date.DateUtil.beginOfYear(cal.getTime());           CollectionUtil.getLast(result).end(new Date(dt.getTime() - 24L * 3600 * 1000));           result.add(Range.create(dt));           cal.add(Calendar.YEAR, 1);       }       CollectionUtil.getLast(result).end(end);       return result;   }   //日期区间   public static class Range {       Date start;       Date end;       private Range(Date start) {           this.start = start;       }       public static Range create(Date start) {           return new Range(start);       }       public Range end(Date end) {           this.end = end;           return this;       }       public Date getStart() {           return start;       }       public Date getEnd() {           return end;       }       @Override       public String toString() {           return "[" + cn.hutool.core.date.DateUtil.format(start, "yyyy-MM-dd") + "-" + cn.hutool.core.date.DateUtil.format(end, "yyyy-MM-dd")                   + "]";       }   }