import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.ZoneId;
import java.util.*;
public class HolidayUtil {
static List<Date> holiday = new ArrayList<>();
static List<Date> extraWorkDay = new ArrayList<>();
public static void init() {
}
public static int calWorkingDays(Date startTime, Date endTime) {
int Days = 0;
Date flag = startTime;
Calendar cal = Calendar.getInstance();
while (flag.compareTo(endTime) != 1) {
cal.setTime(flag);
Boolean workingDay = isWorkingDay(cal.getTime());
if (workingDay) {
Days = Days + 1;
}
cal.add(Calendar.DAY_OF_MONTH, +1);
flag = cal.getTime();
}
return Days;
}
public static LocalDate DateToLocalDate(Date date) {
return date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
}
public static Boolean isWorkingDay(Date date) {
if (extraWorkDay.contains(date)) {
return true;
}
if (holiday.contains(date)) {
return false;
}
LocalDate dateTime = HolidayUtil.DateToLocalDate(date);
DayOfWeek week = dateTime.getDayOfWeek();
if (week == DayOfWeek.SATURDAY || week == DayOfWeek.SUNDAY) {
return false;
}
return true;
}
public static void main(String[] args) throws ParseException {
init();
String dateStr1 = "2022-05-27";
String dateStr2 = "2022-06-01";
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date date1 = sdf.parse(dateStr1);
Date date2 = sdf.parse(dateStr2);
System.out.println("工作日:" + calWorkingDays(date1, date2));
}
}
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