从给定日期获取连续工作日的“ N”个数字

Chamithra Thenuwara 发表于 Dev

Chamithra Thenuwara

我目前正在从事，它的休假管理模块中HR system有一个get 10 consecutive days (working days except weekends)休假选项。它是一个J2EE应用程序。

我只想 get 'N' number of consecutive weekdays from the given date

有人知道如何解决这个问题吗？

PS：我没有使用JodaTime之类的任何第三方库。

这是我的控制器的单日休假申请代码。这与连续几天的事情无关。但是在这里张贴这个证明我做的很认真..

if (action.equals("applyLeave")) {

    Leave l = new Leave();

    int userid = Integer.parseInt(request.getParameter("userid"));
    int leavetype = Integer.parseInt(request.getParameter("leavetype"));
    String from = request.getParameter("from"); // from time
    String to = request.getParameter("to"); // to time
    double total = Double.parseDouble(request.getParameter("total")); // total hours

    String r1 = request.getParameter("rep1");
    String r2 = request.getParameter("rep2");

    if (r1 == null || r1.isEmpty()) {
        r1 = "0";
    }

    if (r2 == null || r2.isEmpty()) {
        r2 = "0";
    }

    int rep1 = Integer.parseInt(r1);
    int rep2 = Integer.parseInt(r2);

    String reason = request.getParameter("reason");
    String date = request.getParameter("date");

    l.setUser(userid);
    l.setLeavetype(leavetype);
    l.setDate(date);
    l.setFrom(from);
    l.setReason(reason);
    l.setRep1(rep1);
    l.setRep2(rep2);
    l.setTo(to);
    l.setTotal(total);

    dao.saveLeave(l);

    // get manager of the department
    UserDao udao = (UserDao) ctx.getBean("udao");
    DepartmentDao ddao = (DepartmentDao) ctx.getBean("depdao");
    NotificationDao notificationDao = (NotificationDao) ctx.getBean("notificationDao");
    User u = udao.getUserByUserID(userid).get(0);
    int department = u.getDepartment();
    Department d = ddao.getDepartmentByID(department).get(0);
    int manager = d.getManager();

    // save a notification for the respective manager
    // insert notification
    String text = u.getFirstname() + " " + u.getLastname() + " has applied for a leave";
    Notification n = new Notification();
    n.setUserid(manager);
    n.setFk(dao.getLeaveID());
    n.setType(3);
    n.setText(text);
    notificationDao.saveNotification(n);

    PrintWriter out = res.getWriter();
    res.setContentType("text/html");
    Gson gson = new Gson();
    JsonObject myObj = new JsonObject();
    myObj.add("message", gson.toJsonTree("Successfully Inserted"));
    out.println(myObj.toString());
    out.close();

}

泰迪熊

List<Date> holidays = conf.getHolidays();
List<Date> nWorkingDays = new ArrayList<>();

// 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 < n) { //You want n working days
    int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
    if (dayOfWeek != Calendar.SATURDAY && dayOfWeek != Calendar.SUNDAY && !holidays.contains(cal.getTime())) {
        businessDayCounter++;
        nWorkingDays.add(cal.getTime());
    }
    cal.add(Calendar.DAY_OF_YEAR, 1);
}

return nWorkingDays;