在没有星期六,星期日和公众假期的情况下计算java的工作日

Question

我在oracle有一张桌子,我在墨西哥保存了十二个公共日,我需要计算自你注册后的限制日

public Date calcularFechaLimite() {
    try {
        DiaFestivoDTO dia = new DiaFestivoDTO();

        // Calendar fechaActual = Calendar.getInstance();
        Calendar fechaL = Calendar.getInstance();
        fechaL.add(Calendar.DATE, 3);

        switch (fechaL.get(Calendar.DAY_OF_WEEK)) {
        case Calendar.SATURDAY:
            fechaL.add(Calendar.DATE, 2);
            break;
        case Calendar.SUNDAY:
            fechaL.add(Calendar.DATE, 2);
            break;
        case Calendar.MONDAY:
            fechaL.add(Calendar.DATE, 2);
            break;
        case Calendar.TUESDAY:
            fechaL.add(Calendar.DATE, 1);
        default:
            break;
        }
        dia.setFechaLimite(fechaL.getTime());
        Integer numeroDiasFest = seleccionPagoBO.obtenerDiasFestivos(dia);
        if (numeroDiasFest != 0) {
            fechaL.add(Calendar.DATE, numeroDiasFest);
            dia.setFechaLimite(fechaL.getTime());
        }

        fechaLimite = fechaL.getTime();
    } catch (Exception e) {
        e.printStackTrace();
    }

    return fechaLimite;

}

这是我所拥有的,但3月28日和29日是公共日,它不工作,任何想法？

Answer 1

几个问题:

您没有检查您跳过的前3天是否包含周末日.

此外,您正在跳过奇怪的天数并在工作日跳过(这是工作日,因此不应跳过).

我假设方法DiaFestivoDTO.obtenerDiasFestivos()计算某个日期范围内的国定假日数,但开始日期是多少？是否在创建DiaFestivoDTO时初始化为当前日期？

当您的日期范围内有国定假日时,您会增加日期范围,但从不检查此新日期范围是否包括新的国家法定假日或周末日.

如果您要做的是计算"从现在起3个工作日"的日期,这里大概是我要做的:

// get all the holidays as java.util.Date
DiaFestivoDTO dia = new DiaFestivoDTO();
List<Date> holidays = dia.getAllNationalHolidays();

// get the current date without the hours, minutes, seconds and millis
Calendar cal = Calendar.getInstance();
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);

// iterate over the dates from now and check if each day is a business day
int businessDayCounter = 0
while (businessDayCounter < 3) {
    int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
    if (dayOfWeek != Calendar.SATURDAY && dayOfWeek != Calendar.SUNDAY && !holidays.contains(cal.getTime())) {
        businessDayCounter++;
    }
    cal.add(Calendar.DAY_OF_YEAR, 1);
}
Date threeBusinessDaysFromNow = cal.getTime();

为此,我建议你添加一个新方法'getAllNationalHolidays'来列出假期,因为在内存中存储十二个日期比多次访问数据库检查它们更有效.

如果您无法更改/添加数据库方法,那么您可以执行此操作

while (businessDayCounter < 3) {

    // determine if this day is a holiday
    DiaFestivoDTO dia = new DiaFestivoDTO();
    dia.setFechaInitial(cal.getTime());
    dia.setFechaLimite(cal.getTime());
    boolean isHoliday = seleccionPagoBO.obtenerDiasFestivos(dia) > 0;

    int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
    if (dayOfWeek != Calendar.SATURDAY && dayOfWeek != Calendar.SUNDAY && !isHoliday) {
        businessDayCounter++;
    }
    cal.add(Calendar.DAY_OF_YEAR, 1);
}

在这里,我假设您可以使用'setFechaInitial'或类似的东西在DiaFestivoDTO中设置'from'日期.但是通过这种方式,您将至少调用三次数据库效率低下.