Java计算加上指定工作日数(排除周六周日和一系列节日)

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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);   }}
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