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")
                   + "]";
       }
   }