指定 年 周 星期 获取这周的开始日期和结束日期

 //一年的开始周 java为1.

private static LocalDate parseWeekBegin(int year, int week) {

return LocalDate.parse(year + " " + week,

new DateTimeFormatterBuilder().appendPattern("YYYY w").parseDefaulting(WeekFields.ISO.dayOfWeek(), 1).toFormatter());

}

private static LocalDate parseWeekEnd(LocalDate begin) {

return begin.with(TemporalAdjusters.next(DayOfWeek.SUNDAY));

}

 

调用：

LocalDate begin = parseWeekBegin(2016,31);

System.out.println(begin);

System.out.println(parseWeekEnd(begin) );

 

java的日期和时间：http://www.importnew.com/14857.html

Java 8 Date Time API Example Tutorial – LocalDate, Instant, LocalDateTime, Parse and Format