根据给定起止日期输出范围内需要工作的日期(去除法定节假日、周末等)

package com.ghw.springboot.oa;

import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.time.DateFormatUtils;
import org.apache.commons.lang3.time.DateUtils;

import java.text.ParseException;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

/**
 * 输出工作日(根据给定起止日期输出范围内需要工作的日期(去除法定节假日、周末等))
 */
public class JieJiaRi {

    private static Boolean isAdd(Date date) {
        Calendar c = DateUtils.toCalendar(date);
        int i = c.get(Calendar.DAY_OF_WEEK);
        //如果是周末，判断是否要加班
        if (i == 1 || i == 7) {
            return needWork(date, "02");
            //如果是周内判断是否调休
        } else {
            return needWork(date, "01");
        }
    }

    /**
     * 工作日是否需要工作
     *
     * @param date 日期
     * @param type 01周内，02周末
     * @return true 需要工作，false 不需要工作
     */
    private static boolean needWork(Date date, String type) {
        String offDay2019 = "2019-01-01,2019-02-04,2019-02-05,2019-02-06,2019-02-07,2019-02-08,2019-04-05,2019-05-01,2019-06-07,2019-09-13,2019-10-01,2019-10-02,2019-10-03,2019-10-04,2019-10-07";
        String workDay2019 = "2019-02-02,2019-02-03,2019-09-29,2019-10-12";
        String format = DateFormatUtils.format(date, "yyyy-MM-dd");
        if (StringUtils.contains(offDay2019, format)) {
            return false;
        }
        if (StringUtils.contains(workDay2019, format)) {
            return true;
        }
        if ("02".equals(type)) {
            return false;
        }
        return true;
    }

    public static void main(String[] args) throws ParseException {
        String beginDay = "2019-02-01";
        String endDay = "2019-02-28";
        Date begin = DateUtils.parseDate(beginDay, "yyyy-MM-dd");
        Date end = DateUtils.parseDate(endDay, "yyyy-MM-dd");
        List<Date> list = new ArrayList<>();
        while (!DateUtils.isSameDay(begin, DateUtils.addDays(end, 1))) {
            if (isAdd(begin)) {
                list.add(begin);
            }
            begin = DateUtils.addDays(begin, 1);
        }

        for (int i = 0; i < list.size(); i++) {
            Date date = list.get(i);
            System.out.println(DateFormatUtils.format(date, "yyyy-MM-dd"));
        }
        System.out.println(list.size());
    }

}