我试图获得自1970年,1971年,1972年,1973年以来到2017年的年份列表,以及1月份的月份列表 - decemeber 在此之后根据月份和年份产生周数(基于星期一至星期五的工作日)
所以,如果一个月开始于星期四,即2-2-2016
然后应该返回2-2-2016,3-2-2016
如果月末是星期二,其日期是30-4-2016,则假设用例
然后我应该得到29-4-2016,30-4-2016
到目前为止,我只能从输入日期到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;
}
}
}
在选择月份和年份后,我想要做以下事情:
1)找到本月的第一天
2)找到MONTH的第一个星期五
3)检查星期六或星期日,在DATE添加1或2
4)在周一的第一天增加2天以获得第二周的第一天。
5)增加5天以获得第二周的周五
6)同样继续直到月底
对此有任何帮助将不胜感激。
答案 0 :(得分:2)
Stack Overflow通常不是代码编写服务,我希望你已经知道了。这个问题可能有点复杂,而不是试图解释我认为编写代码片段更简单,它也提供更高的精度。与此同时,我不太确定你要追求的是什么,但我相信我很接近,你会做出你需要的修改。
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
提供给上述方法,则会打印:
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
给出29-4-2016
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
落入的月份的工作周打印到标准输出。您可能希望将方法更改为接受YearMonth
而不是String
,因为它不使用确切的日期。或者您可能想要更改它,以便以某种方式使用确切的日期。