java - 如何计算两个日期之间的总工作小时数？

Question

我有两个日期，雇用 11/19/2013 和结束雇用 10/01/2014，都转换为总小时数，不考虑周末，但它们有不同的年份，因此输出显示:总小时数工作是-1200:

private int calculateTimeInternship(Vacancy peoplevacancy){
    int hourWorked = 0; 
    Calendar date1 = Calendar.getInstance();  
    Calendar date2 = Calendar.getInstance();    

    date1.setTime(peoplevacancy.getDthiring());  
    date2.setTime(peoplevacancy.getDtendhiring());  

    int initiation = date1.get(Calendar.DAY_OF_YEAR);  
    int end = date2.get(Calendar.DAY_OF_YEAR);  

    int amountDay = (initiation - end) + 1;  

    for (; initiation <= end; inicio++){  
        if (date1.get(Calendar.DAY_OF_WEEK) == 1   || date1.get(Calendar.DAY_OF_WEEK) == 7)  
        amountDay--;  

        date1.add(Calendar.DATE, 1);  
    }

    hourWorked = amountDay * 4 //4 hour per day;
    return hourWorked ;
}

Answer 1

Joda可以为您提供帮助，但由于其许可证，我永远无法使用它。

如果像我一样，Joda不适合你，你可以按如下方式解决这个问题:

initialize endDate object
initialize startDate object
initialize weeksBetween as 
    milliseconds between end&start/milliseconds per day, divided by seven (integer floor). 
    //may need to normalize dates and set them to be both midnight or noon or some common time
initialize daysBetween = weeksBetween*5 // in any continuous 7 days, 5 are weekdays.
initialize curDay=startDate + weeksBetween*7 days

while(curDay is not endDate)
   add a day to curDay
   if(curDay is not weekend)
      daysBetween++
output daysBetween* 4

您可以通过将日历转换为 Date 来获取它们之间的毫秒数(Calendar有这样的方法可以做到这一点)