java - 在 Java 中不考虑周末和银行假日的经过时间

Question

我已经实现了一个运行良好的秒表，而没有考虑到银行假期和周末不应计入总持续时间。我一直在寻找一些开源库，我可以在其中获取经过的时间，传递开始瞬间、结束瞬间和一组银行假期（周末不计算在内）。唯一让我更轻松的库是 net.sf.jtemporal，但我仍然需要扩展功能。谁能告诉我是否有一些有用的库来获得想要的功能？

Answer 1

正如我在那里提到的，可能最好和最简单的方法是创建一个包含每天信息的表（从开始/银行假期开始的工作日计数等；每天一行 = 每年 365 行），然后只使用计数功能/ 适当的选择。

Answer 2

我怀疑你能找到特定的东西。但是创建自己的逻辑很容易。这是一些伪代码...

private long CalculateTimeSpan(DateTime BeginDate, DateTime EndDate, ArrayList<DateTime> BankHollidays)
{
    long ticks = 0;
    while (BeginDate <= EndDate) // iterate until reaching end
    {
        if ((BeginDate is holliday?) || (BeginDate is Weekend?))
             skip;
        else
             ticks += (24*60*60*1000);

        BeginDate = BeginDate + 1 day; // add one day and iterate
    }

    return ticks;
}

Answer 3

你也只计算银行营业时间吗？上午 9 点到下午 3 点？还是一天24小时？

Answer 4

你应该看看Joda Time。它是一种比 Java 中包含的更好的日期/时间 API

Answer 5

我认为这将是您正在寻找的有效解决方案。它计算经过的时间（考虑到一个工作日有 24 小时），不计算银行假日和周末：

/**
 * Calculate elapsed time in milliseconds
 * 
 * @param startTime
 * @param endTime
 * @return elapsed time in milliseconds
 */

protected long calculateElapsedTimeAux(long startTime, long endTime) { 
    CustomizedGregorianCalendar calStartTime = new CustomizedGregorianCalendar(this.getTimeZone());
    CustomizedGregorianCalendar calEndTime = new CustomizedGregorianCalendar(this.getTimeZone());
    calStartTime.setTimeInMillis(startTime);
    calEndTime.setTimeInMillis(endTime);
    long ticks = 0;

    while (calStartTime.before(calEndTime)) { // iterate until reaching end 
        ticks = ticks + increaseElapsedTime(calStartTime, calEndTime);
    }

    return ticks;
}

private long increaseElapsedTime(CustomizedGregorianCalendar calStartTime, CustomizedGregorianCalendar calEndTime) {
    long interval;
    long ticks = 0;

    interval = HOURS_PER_DAY*MINUTES_PER_HOUR*SECONDS_PER_MIN*MILLISECONDS_PER_SEC; // Interval of one day

    if ( calEndTime.getTimeInMillis() - calStartTime.getTimeInMillis() < interval) {
        interval = calEndTime.getTimeInMillis() - calStartTime.getTimeInMillis();
    }

    ticks = increaseElapsedTimeAux(calStartTime, calEndTime, interval);
    calStartTime.setTimeInMillis(calStartTime.getTimeInMillis() + interval);

    return ticks;
}

protected long increaseElapsedTimeAux(CustomizedGregorianCalendar calStartTime, CustomizedGregorianCalendar calEndTime, long interval) {
    long ticks = 0;

    CustomizedGregorianCalendar calNextStartTime = new CustomizedGregorianCalendar(this.getTimeZone());
    calNextStartTime.setTimeInMillis(calStartTime.getTimeInMillis() + interval);

    if ( (calStartTime.isWorkingDay(_nonWorkingDays) && calNextStartTime.isWorkingDay(_nonWorkingDays)) ) { // calStartTime and calNextStartTime are working days
        ticks = interval;

    }
    else {
        if (calStartTime.isWorkingDay(_nonWorkingDays)) { // calStartTime is a working day and calNextStartTime is a non-working day
            ticks = (calStartTime.getNextDay().getTimeInMillis() - calStartTime.getTimeInMillis());
        }
        else {
            if (calNextStartTime.isWorkingDay(_nonWorkingDays)) { // calStartTime is a non-working day and calNextStartTime is a working day
                ticks = (calNextStartTime.getTimeInMillis() - calStartTime.getNextDay().getTimeInMillis());
            }
            else {} // calStartTime and calEndTime are non-working days
        }
    }

    return ticks;
}