获取指定n个工作日后的日期工具类

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

public class WeekdaysUtils {
   public static List<String> list = new ArrayList<>();//节假日数据源
   public static List<String> weekDayList = new ArrayList<>();//补班数据源

   static {
      //数据源需扩充,每年更新
      /**
       * 2021年假期及补办数据源
       */
      list.add("2021-01-01");
      list.add("2021-01-02");
      list.add("2021-01-03");
      list.add("2021-02-11");
      list.add("2021-02-12");
      list.add("2021-02-13");
      list.add("2021-02-14");
      list.add("2021-02-15");
      list.add("2021-02-16");
      list.add("2021-02-17");
      list.add("2021-04-03");
      list.add("2021-04-04");
      list.add("2021-04-05");
      list.add("2021-05-01");
      list.add("2021-05-02");
      list.add("2021-05-03");
      list.add("2021-05-04");
      list.add("2021-05-05");
      list.add("2021-06-12");
      list.add("2021-06-13");
      list.add("2021-06-14");
      list.add("2021-09-19");
      list.add("2021-09-20");
      list.add("2021-09-21");
      list.add("2021-10-01");
      list.add("2021-10-02");
      list.add("2021-10-03");
      list.add("2021-10-04");
      list.add("2021-10-05");
      list.add("2021-10-06");
      list.add("2021-10-07");
      weekDayList.add("2021-02-07");
      weekDayList.add("2021-02-20");
      weekDayList.add("2021-04-25");
      weekDayList.add("2021-05-08");
      weekDayList.add("2021-09-18");
      weekDayList.add("2021-09-26");
      weekDayList.add("2021-10-09");
      /**
       * 2022年假期及补办数据源
       */
      //元旦节
      list.add("2022-01-01");
      list.add("2022-01-02");
      list.add("2022-01-03");
      //除夕
      list.add("2022-01-31");
      //春节
      list.add("2022-02-01");
      list.add("2022-02-02");
      list.add("2022-02-03");
      list.add("2022-02-04");
      list.add("2022-02-05");
      list.add("2022-02-06");
      //清明节
      list.add("2022-04-03");
      list.add("2022-04-04");
      list.add("2022-04-05");
      //劳动节
      list.add("2022-05-01");
      list.add("2022-05-02");
      list.add("2022-05-03");
      list.add("2022-05-04");
      //端午节
      list.add("2022-06-03");
      list.add("2022-06-04");
      list.add("2022-06-05");
      //国庆节
      list.add("2022-10-01");
      list.add("2022-10-02");
      list.add("2022-10-03");
      list.add("2022-10-04");
      list.add("2022-10-05");
      list.add("2022-10-06");
      list.add("2022-10-07");
      weekDayList.add("2022-01-29");
      weekDayList.add("2022-01-30");
      weekDayList.add("2022-04-02");
      weekDayList.add("2022-04-24");
      weekDayList.add("2022-05-07");
      weekDayList.add("2022-10-08");
      weekDayList.add("2022-10-09");
      /**
       * 2023年假期及补办数据源
       */
      //元旦节
      list.add("2022-12-31");
      list.add("2023-01-01");
      list.add("2023-01-02");
      //除夕
      list.add("2023-01-21");
      //春节
      list.add("2023-01-22");
      list.add("2023-01-23");
      list.add("2023-01-24");
      list.add("2023-01-25");
      list.add("2023-01-26");
      list.add("2023-01-27");
      //清明节
      list.add("2023-04-05");
      //劳动节
      list.add("2023-04-29");
      list.add("2023-04-30");
      list.add("2023-05-01");
      list.add("2023-05-02");
      list.add("2023-05-03");
      //端午节
      list.add("2023-06-22");
      list.add("2023-06-23");
      list.add("2023-06-24");
      //国庆节
      list.add("2023-09-29");
      list.add("2023-09-30");
      list.add("2023-10-01");
      list.add("2023-10-02");
      list.add("2023-10-03");
      list.add("2023-10-04");
      list.add("2023-10-05");
      list.add("2023-10-06");
      weekDayList.add("2023-01-28");
      weekDayList.add("2023-01-29");
      weekDayList.add("2023-04-23");
      weekDayList.add("2023-05-06");
      weekDayList.add("2023-06-25");
      weekDayList.add("2023-10-07");
      weekDayList.add("2023-10-08");
   }

   private static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

   /**
    * 用于判断n个工作日(排除节假日、周六日包含节后补班数据)后的日期
    *
    * @param list        节假日数据源
    * @param weekDayList 节后补班数据源
    * @param today       计算开始时间
    * @param num         多少个工作日 根据需要自行安排
    * @throws ParseException
    */
   public static Date getScheduleActiveDate(List<String> list, List<String> weekDayList, Date today, int num) {
      try {
         String today1 = WeekdaysUtils.parseDate(today, "yyyy-MM-dd");
         Date tomorrow = null;
         int delay = 1;
         while (delay <= num) {
            tomorrow = getTomorrow(today);
            //当前日期+1即tomorrow,判断是否是节假日,同时要判断是否是周末,都不是则将scheduleActiveDate日期+1,直到循环num次即可------不是节假日不是周末并且不是补班
            if ((!isWeekend(sdf.format(tomorrow)) && !isHoliday(sdf.format(tomorrow), list)) || isWorkWeekDay(sdf.format(tomorrow), weekDayList)) {
               if (isWorkWeekDay(sdf.format(tomorrow), weekDayList)) {
                  System.out.println(sdf.format(tomorrow) + "::是节假日调休补班");
               } else {
                  System.out.println(sdf.format(tomorrow) + "::是正常工作日");
               }
               delay++;
               today = tomorrow;
            } else if (isHoliday(sdf.format(tomorrow), list)) {
//                tomorrow = getTomorrow(tomorrow);
               today = tomorrow;
               System.out.println(sdf.format(tomorrow) + "::是节假日");
            } else if (isWeekend(sdf.format(tomorrow))) {//是周六日并且不是节后补班
               if (!isWorkWeekDay(sdf.format(tomorrow), weekDayList)) {
                  today = tomorrow;
                  System.out.println(sdf.format(tomorrow) + "::是休息日");
               }
            }
         }
         System.out.println(today1 + "后" + num + "个工作日后,日期为::" + sdf.format(today));
         return today;
      } catch (Exception e) {
         e.printStackTrace();
      }
      return null;
   }

   /**
    * 获取明天的日期
    *
    * @author Herbert
    */
   public static Date getTomorrow(Date date) {
      Calendar calendar = Calendar.getInstance();
      calendar.setTime(date);
      calendar.add(Calendar.DAY_OF_MONTH, +1);
      date = calendar.getTime();
      return date;
   }

   /**
    * 判断是否是weekend
    */
   public static boolean isWeekend(String sdate) throws ParseException {
      Date date = sdf.parse(sdate);
      Calendar cal = Calendar.getInstance();
      cal.setTime(date);
      if (cal.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY || cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) {
         return true;
      } else {
         return false;
      }
   }

   /**
    * 判断是否是holiday
    */
   public static boolean isHoliday(String sdate, List<String> list) throws ParseException {
      if (list.size() > 0) {
         for (int i = 0; i < list.size(); i++) {
            if (sdate.equals(list.get(i))) {
               return true;
            }
         }
      }
      return false;
   }

   /**
    * 判断是否是补班
    */
   public static boolean isWorkWeekDay(String sdate, List<String> list) throws ParseException {
      if (list.size() > 0) {
         for (int i = 0; i < list.size(); i++) {
            if (sdate.equals(list.get(i))) {
               return true;
            }
         }
      }
      return false;
   }

   /**
    * 把日期格式化成字符串
    */
   public static String parseDate(Date date, String format) {
      SimpleDateFormat formater = new SimpleDateFormat(format);
      String dateString;
      dateString = formater.format(date);
      return dateString;
   }

   /**
    * (differ / dayM) 这里拿到被舍弃的整数，整数是几，就代表相隔几天，一天24小时，那就整数乘以24即可。
    *
    * @param endDate
    * @param nowDate
    * @return
    */
   public static String getDatePoor(Date endDate, Date nowDate) {
      long nd = 1000 * 24 * 60 * 60;//每天毫秒数
      long nh = 1000 * 60 * 60;//每小时毫秒数
      long nm = 1000 * 60;//每分钟毫秒数
      long diff = endDate.getTime() - nowDate.getTime(); // 获得两个时间的毫秒时间差异
      long day = diff / nd;   // 计算差多少天
      long hour = diff % nd / nh; // 计算差多少小时
      long min = diff % nd % nh / nm;  // 计算差多少分钟
      return hour + "小时" + min + "分钟";
   }

   /**
    * 查询两个时间之间有多少个工作日
    *
    * @param list        节假日数据源
    * @param weekDayList 节后补班数据源
    * @param endDate     结束时间
    * @param nowDate     开始时间
    * @return
    */
   public static Map<String, Integer> getDateWeekdayNum(List<String> list, List<String> weekDayList, Date endDate, Date nowDate) {
      Map<String, Integer> resultMap = new HashMap<>();
      try {
         String endDateStr = WeekdaysUtils.parseDate(endDate, "yyyy-MM-dd");
         String nowDateStr = WeekdaysUtils.parseDate(nowDate, "yyyy-MM-dd");
         //相等则是同一天
         if (endDateStr.equals(nowDateStr)) {
            resultMap.put("weekday", 0);
            resultMap.put("holiday", 0);
            return resultMap;
         }
         Date tomorrow = null;
         int weekday = 0;
         int holiday = 0;
         while (true) {
            // + 1
            tomorrow = getTomorrow(nowDate);
            String str = sdf.format(tomorrow);
            //当前日期+1即tomorrow,判断是否是节假日,同时要判断是否是周末,都不是则将scheduleActiveDate日期+1,直到循环num次即可------不是节假日不是周末并且不是补班
            if ((!isWeekend(sdf.format(tomorrow)) && !isHoliday(sdf.format(tomorrow), list)) || isWorkWeekDay(sdf.format(tomorrow), weekDayList)) {
               if (isWorkWeekDay(sdf.format(tomorrow), weekDayList)) {
                  System.out.println(sdf.format(tomorrow) + "::是节假日调休补班");
               } else {
                  System.out.println(sdf.format(tomorrow) + "::是正常工作日");
               }
               //工作日/调班
               ++weekday;
               nowDate = tomorrow;
            } else {
               //休假日
               ++holiday;
               nowDate = tomorrow;
            }
            if (endDateStr.equals(sdf.format(tomorrow))) {
               break;
            }
         }
         resultMap.put("weekday", weekday);
         resultMap.put("holiday", holiday);
         return resultMap;
      } catch (Exception e) {
         e.printStackTrace();
      }
      return resultMap;
   }
}