Java计算加上指定工作日数(排除周六周日和一系列节日)

package com.stocks.util;

import android.util.SparseArray;

import org.joda.time.DateTime;

import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.HashMap;
import java.util.List;

public class DateUtil { private boolean holidayFlag;

//   int[][] holidays = {{6, 9}, {6, 10}, {9, 15}, {9, 16}};

   HashMap<Integer, List<Integer>> holidays; public void getHolidays() {
// List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5, 6);
 if (holidays == null) { holidays = new HashMap<>(); holidays.put(6, Arrays.asList(9, 10)); holidays.put(9, Arrays.asList(15, 16)); holidays.put(1, Arrays.asList(1)); } } /**
 * 计算工作日, 具体节日包含哪些,可以在HolidayMap中修改
 * src =日期(源), adddays 要加的天数
 */
   public Calendar addDateByWorkDay(Calendar src, int adddays) {
// Calendar result = null;
 holidayFlag = false; for (int i = 0; i < adddays; i++) { //把源日期加一天
 src.add(Calendar.DAY_OF_MONTH, 1); holidayFlag = checkHoliday(src); if (holidayFlag) { i--; } System.out.println(src.getTime()); } System.out.println("Final Result:" + src.getTime()); return src; } public String getToday( String format){ if (format == null) { format = "yyyyMMdd"; } DateTime dateTime =new DateTime(); boolean holidayFlag = true; int addday=0; while (holidayFlag) { //把源日期加一天
 holidayFlag = checkHolidayJoda(dateTime); if (holidayFlag) { dateTime = dateTime.plusDays(-1); addday++; } } if(addday==0 && dateTime.getHourOfDay()<8){ dateTime=dateTime.plusDays(-1); } String strdate = dateTime.toString(format); return strdate; } public Integer getToday_old(Calendar src, String format) { if (format == null) { format = "yyyyMMdd"; } boolean holidayFlag = true; while (holidayFlag) { //把源日期加一天
 holidayFlag = checkHoliday(src); if (holidayFlag) src.add(Calendar.DAY_OF_MONTH, -1); } Date dNow = src.getTime(); SimpleDateFormat sdf = new SimpleDateFormat(format); //设置时间格式
 String defaultStartDate = sdf.format(dNow); //格式化前3月的时间
 return Integer.parseInt(defaultStartDate);
//   System.out.println("生成的时间是：" + defaultEndDate);
   } public int beforeDateByWorkDay(Calendar src, int beforedays, String format) { if (format == null) { format = ("yyyyMMdd"); }
// Calendar result = null;
 boolean holidayFlag = true; while (holidayFlag) { //把源日期加一天
 holidayFlag = checkHoliday(src); if (holidayFlag) src.add(Calendar.DAY_OF_MONTH, -1); } for (int i = 0; i < beforedays; i++) { //把源日期加一天
 src.add(Calendar.DAY_OF_MONTH, -1); holidayFlag = true; while (holidayFlag) { //把源日期加一天
 holidayFlag = checkHoliday(src); if (holidayFlag) src.add(Calendar.DAY_OF_MONTH, -1); } System.out.println(src.getTime()); } System.out.println("Final Result:" + src.getTime()); Date dBefore = src.getTime(); //得到前3月的时间

 SimpleDateFormat sdf = new SimpleDateFormat(format); //设置时间格式
 String defaultStartDate = sdf.format(dBefore); //格式化前3月的时间

 return Integer.parseInt(defaultStartDate); } public int beforeDateByWeek(Calendar src, int beforeweeks, String format) { if (format == null) { format = ("yyyyMMdd"); } src.add(Calendar.WEEK_OF_MONTH, -beforeweeks); src.set(GregorianCalendar.DAY_OF_WEEK, GregorianCalendar.FRIDAY); Date dBefore = src.getTime(); //得到前3月的时间

 SimpleDateFormat sdf = new SimpleDateFormat(format); //设置时间格式
 String defaultStartDate = sdf.format(dBefore); //格式化前3月的时间

 return Integer.parseInt(defaultStartDate); } public int beforeDateByMonth(Calendar src, int beforeweeks, String format) { if (format == null) { format = ("yyyyMMdd"); } src.add(Calendar.MONTH, -beforeweeks); System.out.println("Final Result:" + src.getTime()); Date dBefore = src.getTime(); //得到前3月的时间

 SimpleDateFormat sdf = new SimpleDateFormat(format); //设置时间格式
 String defaultStartDate = sdf.format(dBefore); //格式化前3月的时间

 return Integer.parseInt(defaultStartDate); } /**
 * 校验指定的日期是否在节日列表中
 * 具体节日包含哪些,可以在HolidayMap中修改
 * @author shenjunjie
 */
   public boolean checkHolidayJoda(DateTime dateTime) { getHolidays(); //先检查是否是周六周日(有些国家是周五周六)
 if (dateTime.getDayOfWeek() == 6 || dateTime.getDayOfWeek() == 7) { return true; } if (holidays.containsKey(dateTime.getMonthOfYear())) { if (holidays.get(dateTime.getMonthOfYear()).contains(dateTime.getDayOfMonth())) { return true; } } return false; } /**
 * 校验指定的日期是否在节日列表中
 * 具体节日包含哪些,可以在HolidayMap中修改
 *
 * @param src 要校验的日期(源)
 * @author shenjunjie
 */
   public boolean checkHoliday(Calendar src) { boolean result = false; getHolidays(); //先检查是否是周六周日(有些国家是周五周六)
 if (src.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY || src.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) { return true; } if (holidays.containsKey(src.get(Calendar.MONTH)+1)) { if (holidays.get(src.get(Calendar.MONTH)+1).contains(src.get(Calendar.DAY_OF_MONTH))) { return true; } } return false; } /**
 * 初始化节日List,请在这里添加新的节日
 * 加的时候请尽量使用Calendar自带的常量而不是魔鬼数字
 * 注:年份可以随便写,因为比的时候只比月份和天
 *
 * @author shenjunjie
 */
//   private void initHolidayList() {
// holidayList = new SparseArray<>();
//
// //五一劳动节
// Calendar may1 = Calendar.getInstance();
// may1.set(Calendar.MONTH, Calendar.MAY);
// may1.set(Calendar.DAY_OF_MONTH, 1);
// holidayList.put(holidayList.size(), may1);
//
// Calendar may2 = Calendar.getInstance();
// may2.set(Calendar.MONTH, Calendar.MAY);
// may2.set(Calendar.DAY_OF_MONTH, 2);
// holidayList.put(holidayList.size(), may2);
//
// Calendar may3 = Calendar.getInstance();
// may3.set(Calendar.MONTH, Calendar.MAY);
// may3.set(Calendar.DAY_OF_MONTH, 3);
// holidayList.put(holidayList.size(), may3);
//
// Calendar h3 = Calendar.getInstance();
// h3.set(2000, 1, 1);
// holidayList.put(holidayList.size(), h3);
//
// Calendar h4 = Calendar.getInstance();
// h4.set(2000, 12, 25);
// holidayList.put(holidayList.size(), h4);
//
// //端午节
// Calendar h5 = Calendar.getInstance();
// h5.set(2000, 6, 9);
// holidayList.put(holidayList.size(), h5);
// Calendar h6 = Calendar.getInstance();
// h6.set(2000, 6, 10);
// holidayList.put(holidayList.size(), h6);
//
// Calendar h7 = Calendar.getInstance();
// h7.set(2000, 9, 15);
// holidayList.put(holidayList.size(), h7);
// Calendar h8 = Calendar.getInstance();
// h8.set(2000, 9, 16);
// holidayList.put(holidayList.size(), h8);
//
// //中国母亲节：五月的第二个星期日
// Calendar may5 = Calendar.getInstance();
// //设置月份为5月
// may5.set(Calendar.MONTH, Calendar.MAY);
// //设置星期:第2个星期
// may5.set(Calendar.DAY_OF_WEEK_IN_MONTH, 2);
// //星期日
// may5.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
 System.out.println(may5.getTime());
// holidayList.put(holidayList.size(), may5);
//   }


   public void testAddDateByWorkDay() { Calendar src = Calendar.getInstance(); src.set(2010, Calendar.APRIL, 29); Calendar result = addDateByWorkDay(src, 2); Calendar expected = Calendar.getInstance(); expected.set(2010, Calendar.MAY, 4);
// Assert.assertEquals(expected.getTime().toString(), result.getTime().toString());
   } public void testAddDateByWorkDay2() { //测试母亲节
 Calendar src = Calendar.getInstance(); src.set(2010, Calendar.MAY, 7); Calendar result = addDateByWorkDay(src, 2); Calendar expected = Calendar.getInstance(); expected.set(2010, Calendar.MAY, 11);
// Assert.assertEquals(expected.getTime().toString(), result.getTime().toString());
   } /**
 * 获得所在日期的周五日期
 */
   public int getFriday(Calendar date, String format) { if (format == null) { format = ("yyyyMMdd"); } date.set(GregorianCalendar.DAY_OF_WEEK, GregorianCalendar.FRIDAY); Date dBefore = date.getTime(); //得到前3月的时间
 SimpleDateFormat sdf = new SimpleDateFormat(format); //设置时间格式
 String defaultStartDate = sdf.format(dBefore); //格式化前3月的时间

 return Integer.parseInt(defaultStartDate); } /**
 * 获得上周五日期
 */
   public int getLastFriday(Calendar date, String format) { if (format == null) { format = ("yyyyMMdd"); } date.set(GregorianCalendar.DAY_OF_WEEK, GregorianCalendar.FRIDAY); date.add(Calendar.DATE, -7); Date dBefore = date.getTime(); //得到前3月的时间
 SimpleDateFormat sdf = new SimpleDateFormat(format); //设置时间格式
 String defaultStartDate = sdf.format(dBefore); //格式化前3月的时间

 return Integer.parseInt(defaultStartDate); } public static void main(String[] args) { Calendar may1 = Calendar.getInstance(); may1.set(Calendar.MONTH, Calendar.JUNE); may1.set(Calendar.DAY_OF_MONTH, 11);
  String aaa= new DateUtil(). getToday(null); Calendar cal = Calendar.getInstance(); cal.set(GregorianCalendar.DAY_OF_WEEK, GregorianCalendar.FRIDAY); cal.add(Calendar.DATE, -7);
// 也可以写成:cal.set(GregorianCalendar.DAY_OF_WEEK,6);
 Date dBefore = cal.getTime(); //得到前3月的时间

 SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd"); //设置时间格式
 String defaultStartDate = sdf.format(dBefore); //格式化前3月的时间

 int aa = Integer.parseInt(defaultStartDate);

// src.set(2016, Calendar.APRIL , 1);
 String date = "20160412"; cal.set(Integer.parseInt(date.substring(0, 4)), Integer.parseInt(date.substring(4, 6)) - 1, Integer.parseInt(date.substring(6, 8))); int maxdate = new DateUtil().getFriday(cal, null); aa = new DateUtil().beforeDateByWorkDay(cal, 60, null); Calendar expected = Calendar.getInstance(); expected.set(2010, Calendar.MAY, 4); }

}

文章来源: blog.csdn.net，作者：网奇，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/jacke121/article/details/55684056