JAVA将一段時間 按周、月、季度、半年、年進行分割。
有時候開發常常會傳入一個開始時間和結束時間，将兩個時間進行分割，傳回一個時間的集合以下是我們小組成員所書寫的實體類
package com.aisino.utils;
import java.text.SimpleDateFormat;
import java.util.*;
public class SpiltDateUtil {
private static SimpleDateFormat monthDateFormat = new SimpleDateFormat("MM");
//将時間段按星期分割
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;
}
//将時間段按照月分割
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;
}
//将時間段按照季度分割
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;
}
//将時間段按照半年分割
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);
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(tmp);
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;
}
//将時間段按照年分割
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;
}
//日期區間
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")
+ "]";
}
}
//根據年，月，第幾周擷取時間範圍
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("天數：" + c.getActualMaximum(Calendar.DAY_OF_MONTH));
System.out.println("Actual周數：" + c.getActualMaximum(Calendar.WEEK_OF_MONTH));
System.out.println("Max周數：" + 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();
}
}
}
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