我正在尝试获取自纪元(即 1970 年、1971 年、1972 年、1973 年等)到 2017 年以来的年份列表,以及 1 月 - 12 月的月份列表 此后根据月份和年份生成周(基于周一至周五的工作日)。
如果一个月从星期四开始,即 2-2-2016
然后它应该返回 2-2-2016, 3-2-2016
假设月末日是星期二且日期是 2016 年 4 月 30 日,则有一个用例
那么我应该得到 29-4-2016, 30-4-2016
到目前为止,我只能从输入日期获取同一周的最后一个工作日,代码如下:
String Date = "06-04-2012";
DateTimeFormatter f = DateTimeFormatter.ofPattern("YYYY-MM-DD");
LocalDate ld = LocalDate.parse(Date, f);
LocalDate nextOrSameFriday = ld.with(TemporalAdjusters
.nextOrSame(DayOfWeek.FRIDAY));
String output = nextOrSameFriday.toString();
//String output = ld.format( f );
if (nextOrSameFriday.getMonthValue() != ld.getMonthValue()) {
nextOrSameFriday = ld.with(TemporalAdjusters
.nextOrSame(DayOfWeek.THURSDAY));
if (nextOrSameFriday.getMonthValue() == ld.getMonthValue())
return nextOrSameFriday.toString();
else if (nextOrSameFriday.getMonthValue() != ld.getMonthValue()) {
nextOrSameFriday = ld.with(TemporalAdjusters
.nextOrSame(DayOfWeek.WEDNESDAY));
if (nextOrSameFriday.getMonthValue() == ld.getMonthValue())
return nextOrSameFriday.toString();
else if (nextOrSameFriday.getMonthValue() != ld.getMonthValue()) {
nextOrSameFriday = ld.with(TemporalAdjusters
.nextOrSame(DayOfWeek.TUESDAY));
if (nextOrSameFriday.getMonthValue() == ld.getMonthValue())
return nextOrSameFriday.toString();
else
return Date;
}
}
}
选择月份和年份后,我想要执行以下操作:
查找该月的第一天
查找该月的第一个星期五
检查是星期六还是星期日,在DATE中添加1或2
在第一个星期五添加 2 天,得到第二周的第一天。
添加 5 天以获得第二周星期五
同样持续到月底
这是一个代码片段:
private static final DateTimeFormatter DATE_FORMAT = DateTimeFormatter.ofPattern("d-M-uuuu");
public static void printWorkWeeksOfMonth(String date) {
LocalDate ld = LocalDate.parse(date, DATE_FORMAT);
LocalDate lastDayOfMonth = ld.with(TemporalAdjusters.lastDayOfMonth());
// find first working day of month; also first working day of first work week
LocalDate firstWorkingDay = ld.withDayOfMonth(1);
if (ld.getDayOfWeek() == DayOfWeek.SATURDAY || ld.getDayOfWeek() == DayOfWeek.SUNDAY) {
firstWorkingDay = firstWorkingDay.with(TemporalAdjusters.next(DayOfWeek.MONDAY));
}
while (! firstWorkingDay.isAfter(lastDayOfMonth)) {
// find last working day of week beginning on firstWorkingDay
LocalDate lastWorkingDay = firstWorkingDay.with(TemporalAdjusters.nextOrSame(DayOfWeek.FRIDAY));
if (lastWorkingDay.isAfter(lastDayOfMonth)) {
// end work week at end of month
lastWorkingDay = lastDayOfMonth;
}
System.out.println(firstWorkingDay.format(DATE_FORMAT)
+ " through " + lastWorkingDay.format(DATE_FORMAT));
// find beginning of next work week
firstWorkingDay = firstWorkingDay.with(TemporalAdjusters.next(DayOfWeek.MONDAY));
}
}
如果我将
2-2-2016
输入到上面的方法中,它会打印:
1-2-2016 through 5-2-2016
8-2-2016 through 12-2-2016
15-2-2016 through 19-2-2016
22-2-2016 through 26-2-2016
29-2-2016 through 29-2-2016
鉴于
29-4-2016
它打印:
1-4-2016 through 1-4-2016
4-4-2016 through 8-4-2016
11-4-2016 through 15-4-2016
18-4-2016 through 22-4-2016
25-4-2016 through 29-4-2016
换句话说,该方法将
date
所在月份的工作周打印到标准输出。您可能需要更改该方法以接受 YearMonth
而不是 String
,因为它不使用确切的日期。或者您可能想更改它,以便它以某种方式使用确切的日期。