JAVA将一段时间 按周、月、季度、半年、年进行分割。
有时候开发常常会传入一个开始时间和结束时间,将两个时间进行分割,返回一个时间的集合以下是我们小组成员所书写的实体类
package com.aisino.utils; import java.text.SimpleDateFormat; import java.util.*; public class SpiltDateUtil { private static SimpleDateFormat monthDateFormat = new SimpleDateFormat("MM"); //将时间段按星期分割 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.last(result).end(new Date(dt.getTime() - 24L * 3600 * 1000)); CollectionUtil.last(result).setMonth(monthDateFormat.format(new Date(dt.getTime() - 24L * 3600 * 1000))); result.add(Range.create(dt)); from.setTime(from.getTime() + 7L * 24 * 3600 * 1000); } CollectionUtil.last(result).end(end); CollectionUtil.last(result).setMonth(monthDateFormat.format(end)); return result; } //将时间段按照月分割 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.last(result).end(new Date(dt.getTime() - 24L * 3600 * 1000)); CollectionUtil.last(result).setMonth(monthDateFormat.format(new Date(dt.getTime() - 24L * 3600 * 1000))); result.add(Range.create(dt)); cal.add(Calendar.MONTH, 1); } CollectionUtil.last(result).end(end); CollectionUtil.last(result).setMonth(monthDateFormat.format(end)); return result; } //将时间段按照季度分割 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.last(result).end(new Date(dt.getTime() - 24L * 3600 * 1000)); System.out.println(cal.get(Calendar.MONTH)); if (cal.get(Calendar.MONTH) >= 1 && cal.get(Calendar.MONTH) <= 3) { CollectionUtil.last(result).setMonth("4"); } else if (cal.get(Calendar.MONTH) >= 4 && cal.get(Calendar.MONTH) <= 6) { CollectionUtil.last(result).setMonth("1"); } else if (cal.get(Calendar.MONTH) >= 7 && cal.get(Calendar.MONTH) <= 9) { CollectionUtil.last(result).setMonth("2"); } else if (cal.get(Calendar.MONTH) >= 10 && cal.get(Calendar.MONTH) <= 12) { CollectionUtil.last(result).setMonth("3"); } result.add(Range.create(dt)); cal.add(Calendar.MONTH, 3); } CollectionUtil.last(result).end(end); System.out.println(cal.get(Calendar.MONTH)); if (cal.get(Calendar.MONTH) >= 1 && cal.get(Calendar.MONTH) <= 3) { CollectionUtil.last(result).setMonth("4"); } else if (cal.get(Calendar.MONTH) >= 4 && cal.get(Calendar.MONTH) <= 6) { CollectionUtil.last(result).setMonth("1"); } else if (cal.get(Calendar.MONTH) >= 7 && cal.get(Calendar.MONTH) <= 9) { CollectionUtil.last(result).setMonth("2"); } else if (cal.get(Calendar.MONTH) >= 10 && cal.get(Calendar.MONTH) <= 12) { CollectionUtil.last(result).setMonth("3"); } return result; } //将时间段按照半年分割 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); Calendar calOne = Calendar.getInstance(); calOne.setTime(end); int mon = cal.get(Calendar.MONTH); // Calendar tmp = Calendar.getInstance(); // if (mon < 6) { // tmp.setTimeInMillis(cal.getTimeInMillis()); // tmp.set(Calendar.MONTH, 5); // } else { // tmp.setTimeInMillis(cal.getTimeInMillis()); // tmp.set(Calendar.MONTH, 11); // } Calendar halfYearEnd = cn.hutool.core.date.DateUtil.endOfMonth(calOne); while (cal.getTimeInMillis() <= halfYearEnd.getTimeInMillis()) { 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.last(result).end(new Date(dt.getTime() - 24L * 3600 * 1000)); result.add(Range.create(dt)); cal.add(Calendar.MONTH, 6); } CollectionUtil.last(result).end(end); return result; } //将时间段按照年分割 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.last(result).end(new Date(dt.getTime() - 24L * 3600 * 1000)); result.add(Range.create(dt)); cal.add(Calendar.YEAR, 1); } CollectionUtil.last(result).end(end); return result; } //日期区间 public static class Range { Date start; Date end; String Month; public Range() { } 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 void setStart(Date start) { this.start = start; } public void setEnd(Date end) { this.end = end; } public Date getStart() { return start; } public Date getEnd() { return end; } public String getMonth() { return Month; } public void setMonth(String month) { Month = month; } @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") + "]"; } } //根据年,月,第几周获取时间范围 public static Map getWeekDateLimits(String year, String month, String week) { Map result = new HashMap(); SimpleDateFormat dft = new SimpleDateFormat("yyyy-MM-dd"); Calendar c1 = Calendar.getInstance(); c1.set(Calendar.YEAR, Integer.parseInt(year)); c1.set(Calendar.MONTH, Integer.parseInt(month) - 1); c1.set(Calendar.DAY_OF_WEEK, 2); c1.set(Calendar.WEEK_OF_MONTH, Integer.parseInt(week)); Date time1 = c1.getTime(); String begin = dft.format(time1); c1.set(Calendar.DATE, c1.get(Calendar.DATE) + 6); Date time2 = c1.getTime(); String end = dft.format(time2); result.put("begin", begin); result.put("end", end); return result; } public static void main(String[] args) { try { Calendar c = Calendar.getInstance(); c.set(Calendar.YEAR, 2021); c.set(Calendar.MONTH, (5 - 1)); c.setFirstDayOfWeek(Calendar.MONDAY); System.out.println( c.get(Calendar.YEAR) + "年" + (c.get(Calendar.MONTH) + 1) + "月"); System.out.println("天数:" + c.getActualMaximum(Calendar.DAY_OF_MONTH)); System.out.println("Actual周数:" + c.getActualMaximum(Calendar.WEEK_OF_MONTH)); System.out.println("Max周数:" + c.getMaximum(Calendar.WEEK_OF_MONTH)); for (int i = 0; i < 6; i++) { System.out.println(getWeekDateLimits(2021 + "", 5 + "", (i + 1) + "")); } } catch (Exception e) { e.printStackTrace(); } } } class CollectionUtil { //获取最后一行 public static final <S> S last(List<S> list) { int size = list.size(); if (size != 0) { return list.get(size - 1); } return null; } }
//将时间段按星期分割 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; } //将时间段按照月分割 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; } //将时间段按照季度分割 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; } //将时间段按照半年分割 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; } //将时间段按照年分割 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") + "]"; } }
汇总:对日期进行分割
标签:分割,JAVA,start,MONTH,按周,cal,Date,end,Calendar From: https://www.cnblogs.com/jelly12345/p/18441212