時效演算法-給定開始時間和環節時效計算結束時間，考慮節假日、調休日和正常雙休
阿新 • • 發佈：2018-11-04
感謝原博主的博文 https://blog.csdn.net/zjnxyz/article/details/17164369
我是在原博主的基礎上優化了下，增加了法定節假日和調休日的手動維護工具類，在此記錄一下，以便以後碰到類似問題。
維護工具類
/** * 手動維護法定節假日和法定調休日工具類 * @author MaJian * */ public class InsertHolidayUtil { public static void main(String[] args){ //驅動程式名 String driver = "com.mysql.jdbc.Driver"; // String driver = "oracle.jdbc.driver.OracleDriver"; //要插入的資料庫 String url = "你的資料庫連線地址"; //String url = "jdbc:oracle:thin:@127.0.0.1:1521:orcl"; String user = "使用者名稱"; String password = "密碼"; DriverManagerDataSource ds = new DriverManagerDataSource(); try { ds.setDriverClassName(driver); ds.setUrl(url); ds.setUsername(user); ds.setPassword(password); Connection actualCon = ds.getConnection(); Statement statement = actualCon.createStatement(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Date start = sdf.parse("2019-02-05");//開始時間 Date end = sdf.parse("2020-12-31");//結束時間 //List<Date> lists = dateSplit(start, end); List<Date> lists = new ArrayList<Date>(); List<Date> holidays = getHolidays(); List<Date> workDays = getWorkDays(); //手動插入一個時間段的所有時間 if (!lists.isEmpty()) { for (Date date : lists) { Calendar cal = Calendar.getInstance(); cal.setTime(date); System.out.println("********插入日期:" + sdf.format(date) + "***********"); int week = cal.get(Calendar.DAY_OF_WEEK)-1; String weekStr = ""; if(week == 0){ weekStr = "星期日"; } if(week == 1){ weekStr = "星期一"; } if(week == 2){ weekStr = "星期二"; } if(week == 3){ weekStr = "星期三"; } if(week == 4){ weekStr = "星期四"; } if(week == 5){ weekStr = "星期五"; } if(week == 6){ weekStr = "星期六"; } String insertSql = "INSERT INTO mc_holiday (DAYLIST, WEEKLIST, IS_HOLIDAY, INCREMENT) " + "VALUES('"+sdf.format(date)+"','"+weekStr+"','"+isHoliday(date)+"','')"; statement.execute(insertSql); } } //法定調休日 if (!workDays.isEmpty()) { for (Date date : workDays) { Calendar cal = Calendar.getInstance(); cal.setTime(date); System.out.println("********插入日期:" + sdf.format(date) + "***********"); int week = cal.get(Calendar.DAY_OF_WEEK)-1; String weekStr = ""; if(week == 0){ weekStr = "星期日"; } if(week == 1){ weekStr = "星期一"; } if(week == 2){ weekStr = "星期二"; } if(week == 3){ weekStr = "星期三"; } if(week == 4){ weekStr = "星期四"; } if(week == 5){ weekStr = "星期五"; } if(week == 6){ weekStr = "星期六"; } String insertSql = "INSERT INTO mc_holiday (DAYLIST, WEEKLIST, IS_HOLIDAY, INCREMENT) " + "VALUES('"+sdf.format(date)+"','"+weekStr+"','0','"+sdf.format(date).substring(0,4)+"')"; statement.execute(insertSql); } } //法定節假日 if (!holidays.isEmpty()) { for (Date date : holidays) { Calendar cal = Calendar.getInstance(); cal.setTime(date); System.out.println("********插入日期:" + sdf.format(date) + "***********"); int week = cal.get(Calendar.DAY_OF_WEEK)-1; String weekStr = ""; if(week == 0){ weekStr = "星期日"; } if(week == 1){ weekStr = "星期一"; } if(week == 2){ weekStr = "星期二"; } if(week == 3){ weekStr = "星期三"; } if(week == 4){ weekStr = "星期四"; } if(week == 5){ weekStr = "星期五"; } if(week == 6){ weekStr = "星期六"; } String insertSql = "INSERT INTO mc_holiday (DAYLIST, WEEKLIST, IS_HOLIDAY, INCREMENT) " + "VALUES('"+sdf.format(date)+"','"+weekStr+"','1','"+sdf.format(date).substring(0,4)+"')"; statement.execute(insertSql); } } actualCon.close(); }catch(Exception e) { e.printStackTrace(); } } /** * 法定節假日 * @return */ private static List<Date> getHolidays(){ List<Date> holidays = new ArrayList<Date>(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); try { //元旦 holidays.add(sdf.parse("2018-01-01")); //春節 holidays.add(sdf.parse("2018-02-15")); holidays.add(sdf.parse("2018-02-16")); holidays.add(sdf.parse("2018-02-17")); holidays.add(sdf.parse("2018-02-18")); holidays.add(sdf.parse("2018-02-19")); holidays.add(sdf.parse("2018-02-20")); holidays.add(sdf.parse("2018-02-21")); //清明 holidays.add(sdf.parse("2018-04-05")); holidays.add(sdf.parse("2018-04-06")); holidays.add(sdf.parse("2018-04-07")); //勞動節 holidays.add(sdf.parse("2018-04-29")); holidays.add(sdf.parse("2018-04-30")); holidays.add(sdf.parse("2018-05-01")); //端午節 holidays.add(sdf.parse("2018-06-16")); holidays.add(sdf.parse("2018-06-17")); holidays.add(sdf.parse("2018-06-18")); //中秋節 holidays.add(sdf.parse("2018-09-22")); holidays.add(sdf.parse("2018-09-23")); holidays.add(sdf.parse("2018-09-24")); //國慶節 holidays.add(sdf.parse("2018-10-01")); holidays.add(sdf.parse("2018-10-02")); holidays.add(sdf.parse("2018-10-03")); holidays.add(sdf.parse("2018-10-04")); holidays.add(sdf.parse("2018-10-05")); holidays.add(sdf.parse("2018-10-06")); holidays.add(sdf.parse("2018-10-07")); } catch (Exception e) { e.printStackTrace(); } return holidays; } /** * 法定調休日 * @return */ private static List<Date> getWorkDays(){ List<Date> workDays = new ArrayList<Date>(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); try { //春節 workDays.add(sdf.parse("2018-02-11")); workDays.add(sdf.parse("2018-02-24")); //清明 workDays.add(sdf.parse("2018-04-08")); //勞動節 workDays.add(sdf.parse("2018-04-28")); //國慶節 workDays.add(sdf.parse("2018-09-29")); workDays.add(sdf.parse("2018-09-30")); } catch (Exception e) { e.printStackTrace(); } return workDays; } private static List<Date> dateSplit(Date start, Date end) throws Exception { if (!start.before(end)) throw new Exception("開始時間應該在結束時間之後"); Long spi = end.getTime() - start.getTime(); int step = (int) (spi / (24 * 60 * 60 * 1000));// 相隔天數 List<Date> dateList = new ArrayList<Date>(); dateList.add(start); for (int i = 0; i < step; i++) { dateList.add(new Date(dateList.get(i).getTime() + (24 * 60 * 60 * 1000)));// 比上一天減一 } return dateList; } /** * 判斷是否為節假日，若是返回1，否則返回0 * @param date * @return */ private static int isHoliday(Date date){ Calendar cal = Calendar.getInstance(); cal.setTime(date); List<Date> holidays = getHolidays(); List<Date> workdays = getWorkDays(); SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd"); // System.out.println(sdf.format(date)); if(((cal.get(Calendar.DAY_OF_WEEK)==Calendar.SATURDAY||cal.get(Calendar.DAY_OF_WEEK)==Calendar.SUNDAY)&&!workdays.contains(sdf.format(date))) || holidays.contains(sdf.format(date)) ) { return 1; } return 0; } private static Date getLastWorkDay(Date date){ Calendar cal = Calendar.getInstance(); cal.setTime(date); cal.add(Calendar.DAY_OF_MONTH,-1); Date dateTemp = cal.getTime(); while (isHoliday(dateTemp) != 0){ cal.add(Calendar.DAY_OF_MONTH,-1); dateTemp = cal.getTime(); } return dateTemp; }
下面是時限計算和時間段相差的邏輯程式碼，工作時間可以從資料庫或配置檔案取，這樣可以更靈活
public class DateCal { //工作時間 private String morningBegin = "08:30";//上午開始時間 private String morningEnd = "12:00";//上午結束時間 private String afternoonBegin = "14:00";//下午開始時間 private String afternoonEnd = "18:00";//結束時間 /** * 根據日期計算xx小時後對應日期，刨除工作日、節假日 * * @param d * @param hours * @return */ public Date getPluseHourDate(Date d, double hours){ Calendar cal_start = Calendar.getInstance(); cal_start.setTime(d); return func(cal_start, hours); } /** * 計算兩個日期之間的時間差，不算節假日、不算週末、不算非正常工作時間 * <p> * 設計思路： * 取開始時間，判斷是否是節假日、是否是週末、是否是加班日 * 如果是節假日： * 往後+1天，再繼續判斷 * 如果是週末： * 判斷是否是加班日，如果不是加班日，往後+1天 * * @param begin 開始時間 * @param end 結束時間 * @return 時間差，單位是毫秒 */ public long getMinusofTowDate(Calendar begin, Calendar end){ long midL = 0;//中間差值時間 // 0.預處理 begin = getBeginDay(begin); end = getEndDay(end); // 1.如果開始時間大於結束時間，交換下，同時結果返回負數即可 if (begin.after(end)){ Calendar swap = begin; begin = end; end = swap; midL = -getDayMiLLI(begin, end); }else{ midL = getDayMiLLI(begin, end); } // 2.計算開始 return midL; } /** * 判斷是否是法定節假日 * 關於法定節假日，這裡還有一個問題需要提前考慮下 * 例如： * 國慶10月1號到10月7號，那10月8號正式上班，但是如果10月8號是週日，在計算的時候，也會不考慮進去。這就比較尷尬。 * 另外就是10月8號是不是週末，不同年份又不同。 * 處理辦法： * 把可能產生上述問題的日期，都單獨拎出來，在計算的時候，先判斷是否滿足這些日期，再判斷這些日期是否是週末 * 如果不是週末，正常計算，如果是週末，還要加上當天的時間。 * @param d1 * @return */ private boolean isHodliDays(Calendar d1){ //法定節假日，當然這個地方是從資料庫裡取出來的 private String isHoliday = "2018-09-22,2018-09-23,2018-09-24,2018-10-01,2018-10-02,2018-10-03,2018-10-04,2018-10-05,2018-10-06,2018-10-07"; SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd"); String time = format.format(d1.getTime()); //String str = String.valueOf(d1.get(Calendar.MONTH) + 1) + "-" + String.valueOf(d1.get(Calendar.DAY_OF_MONTH)); if (isHoliday.contains(time)){ return true; } return false; } //判斷是否是加班日 private boolean isPlusDay(Calendar d1){ //節假日前後的加班，當然這個地方是從資料庫裡取出來的 private String isPlusDau = "2018-09-29,2018-09-30"; SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd"); String time = format.format(d1.getTime()); //String str = String.valueOf(d1.get(Calendar.MONTH) + 1) + "-" + String.valueOf(d1.get(Calendar.DAY_OF_MONTH)); if (isPlusDau.contains(time)){ return true; } return false; } //判斷是否是週末 private boolean isWeek(Calendar d1){ if (d1.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY || d1.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY){ return true; } return false; } //預處理開始時間 private Calendar getBeginDay(Calendar d1){ if (isHodliDays(d1)){ //如果是節假日,往後延一天，並且從這一天的00:00:00開始 d1 = addCalendar(d1, 1); return getBeginDay(d1); }else{ //再判斷是否是週末，如果是週末，判斷是否是加班日 if (isWeek(d1)){ if (!isPlusDay(d1)){ d1 = addCalendar(d1, 1); return getBeginDay(d1); }else{ return d1; } } else{ return d1; } } } //預處理結束時間 private Calendar getEndDay(Calendar d2){ if (isHodliDays(d2)){ //如果是節假日,往前提一天，並且從這一天的00:00:00開始 d2 = addCalendar(d2, -1); return getEndDay(d2); }else{ //不是節假日 if (isWeek(d2)){ if (!isPlusDay(d2)){ d2 = addCalendar(d2, -1); return getEndDay(d2); }else{ return d2; } } else{ return d2; } } } //預處理重置時分秒 private Calendar addCalendar(Calendar d, int m){ if (m == 1){ d.add(Calendar.DATE, 1); d.set(Calendar.HOUR_OF_DAY, 0);//也可直接設定為beginHour d.set(Calendar.MINUTE, 0); d.set(Calendar.SECOND, 0); }else{ d.add(Calendar.DATE, -1); d.set(Calendar.HOUR_OF_DAY, 23);//也可直接設定為endHour d.set(Calendar.MINUTE, 59); d.set(Calendar.SECOND, 59); } return d; } /* private boolean compareTimes(String time1,String time2){ try { SimpleDateFormat sdf=new SimpleDateFormat("hh:mm"); //將字串形式的時間轉化為Date型別的時間 Date a=sdf.parse(time1); Date b=sdf.parse(time2); if(a.before(b)){ return true; }else{ return false; } } catch (Exception e) { e.printStackTrace(); } return true; }*/ //獲取當天實際的工作時間 private long getDayMiLLI(Calendar d, boolean isBegin){ long rv = 0; int h = d.get(Calendar.HOUR_OF_DAY); SimpleDateFormat format = new SimpleDateFormat("HH:mm"); String time = format.format(d.getTime()); try { Date hTime = format.parse(time); Date mgBegin = format.parse(morningBegin); Date mgEnd = format.parse(morningEnd); Date afBegin = format.parse(afternoonBegin); Date afend = format.parse(afternoonEnd); if (isBegin){ if (hTime.getTime() < afend.getTime()){ if (hTime.getTime() >= mgBegin.getTime()){ if (hTime.getTime() >= afBegin.getTime()){ //計算開始那一天的時間長度 rv += afend.getTime() - hTime.getTime(); // rv -= d.get(Calendar.MINUTE) * 60 * 1000; rv -= d.get(Calendar.SECOND) * 1000; rv -= d.get(Calendar.MILLISECOND); }else if (hTime.getTime() >= mgEnd.getTime() && hTime.getTime() < afBegin.getTime()){ rv += afend.getTime() - afBegin.getTime(); }else{ rv += (afend.getTime() - afBegin.getTime()) + (mgEnd.getTime() - hTime.getTime()); //rv -= d.get(Calendar.MINUTE) * 60 * 1000; rv -= d.get(Calendar.SECOND) * 1000; rv -= d.get(Calendar.MILLISECOND); } }else{ rv = (afend.getTime() - afBegin.getTime()) + (mgEnd.getTime() - mgBegin.getTime()); } } }else{ if (hTime.getTime() >= mgBegin.getTime()){ if (hTime.getTime() < afend.getTime()){ if (hTime.getTime() >= afBegin.getTime()){ rv += (mgEnd.getTime() - mgBegin.getTime()) + (hTime.getTime() - afBegin.getTime()); //rv += d.get(Calendar.MINUTE) * 60 * 1000; rv += d.get(Calendar.SECOND) * 1000; rv += d.get(Calendar.MILLISECOND); }else if (hTime.getTime() >= mgEnd.getTime() && hTime.getTime() < afBegin.getTime()){ rv += mgEnd.getTime() - mgBegin.getTime(); }else{ rv += hTime.getTime() - mgBegin.getTime(); //rv += d.get(Calendar.MINUTE) * 60 * 1000; rv += d.get(Calendar.SECOND) * 1000; rv += d.get(Calendar.MILLISECOND); } }else{ rv = (afend.getTime() - afBegin.getTime()) + (mgEnd.getTime() - mgBegin.getTime()); } } } } catch (ParseException e) { e.printStackTrace(); } return rv; } //核心計算函式，返回毫秒 private long getDayMiLLI(Calendar c1, Calendar c2){ long beginL = 0;//開始天時間 long endL = 0;//結束天時間 long rv = 0; //int bh = c1.get(Calendar.HOUR_OF_DAY);//開始 //int eh = c2.get(Calendar.HOUR_OF_DAY);//結束 SimpleDateFormat format = new SimpleDateFormat("HH:mm"); String bhTime = format.format(c1.getTime()); String ehTime = format.format(c2.getTime()); try { Date bh = format.parse(bhTime); Date eh = format.parse(ehTime); Date mgBegin = format.parse(morningBegin); Date mgEnd = format.parse(morningEnd); Date afBegin = format.parse(afternoonBegin); Date afend = format.parse(afternoonEnd); //如果開始日期和結束日期不是同一天，開始往前計算 if (c1.get(Calendar.YEAR) != c2.get(Calendar.YEAR) || c1.get(Calendar.MONTH) != c2.get(Calendar.MONTH) || c1.get(Calendar.DAY_OF_MONTH) != c2.get(Calendar.DAY_OF_MONTH)){ //不是同一天 beginL = getDayMiLLI(c1, true); endL = getDayMiLLI(c2, false); rv = beginL + endL; c1.add(Calendar.DATE, 1); while (c1.get(Calendar.YEAR) != c2.get(Calendar.YEAR) || c1.get(Calendar.MONTH) != c2.get(Calendar.MONTH) || c1.get(Calendar.DAY_OF_MONTH) != c2.get(Calendar.DAY_OF_MONTH)){ if (!isHodliDays(c1)){ if (!isWeek(c1)){ rv += (afend.getTime() - afBegin.getTime()) + (mgEnd.getTime() - mgBegin.getTime()); }else{ if (isPlusDay(c1)){ rv += (afend.getTime() - afBegin.getTime()) + (mgEnd.getTime() - mgBegin.getTime()); } } } c1.add(Calendar.DATE, 1); } }else{ //是同一天 if (bh.getTime() < mgBegin.getTime()){ //開始時間小於早上開始時間，就等於說及計算結束時間在這一天的實際時間 rv += getDayMiLLI(c2, false); }else{ if (eh.getTime() >= afend.getTime()){ //結束時間大於下午結束時間，等於就是計算開始時間在這一天的實際時間 rv += getDayMiLLI(c1, true); }else{ /** * 開始和結束都在中間時間段 * 1.開始和結束都在上午 * 2.開始和結束都在下午 * 3.開始在上午，結束在下午 * 4.開始在中間，結束不在 * 5.結束在中間，開始不在 * 6.開始和結束都在中間 */ if (eh.getTime() < mgEnd.getTime() || bh.getTime() >= afBegin.getTime()){ //都在上午或者都在下午 rv += eh.getTime() - bh.getTime(); //rv -= c1.get(Calendar.MINUTE) * 60 * 1000; rv -= c1.get(Calendar.SECOND) * 1000; rv -= c1.get(Calendar.MILLISECOND); //rv += c2.get(Calendar.MINUTE) * 60 * 1000; rv += c2.get(Calendar.SECOND) * 1000; rv += c2.get(Calendar.MILLISECOND); }else if (bh.getTime() < mgEnd.getTime() && eh.getTime() >= afBegin.getTime()){ //開始在上午，結束在下午 rv += (eh.getTime() - bh.getTime()) - (afBegin.getTime() - mgEnd.getTime()); //rv -= c1.get(Calendar.MINUTE) * 60 * 1000; rv -= c1.get(Calendar.SECOND) * 1000; rv -= c1.get(Calendar.MILLISECOND); //rv += c2.get(Calendar.MINUTE) * 60 * 1000; rv += c2.get(Calendar.SECOND) * 1000; rv += c2.get(Calendar.MILLISECOND); }else if (bh.getTime() < mgEnd.getTime() && eh.getTime() < afBegin.getTime()){ //開始在上午，結束在中間 rv += mgEnd.getTime() - bh.getTime(); // rv -= c1.get(Calendar.MINUTE) * 60 * 1000; rv -= c1.get(Calendar.SECOND) * 1000; rv -= c1.get(Calendar.MILLISECOND); }else if (bh.getTime() > mgEnd.getTime() && eh.getTime() >= afBegin.getTime()){ //開始在中間，結束在下午 rv += eh.getTime() - afBegin.getTime(); //rv += c2.get(Calendar.MINUTE) * 60 * 1000; rv += c2.get(Calendar.SECOND) * 1000; rv += c2.get(Calendar.MILLISECOND); }else{ System.out.println("the begin time c1 " + c1.toString() + " and the end time c2 " + c2.toString() + " in not work day!"); } } } } } catch (ParseException e) { e.printStackTrace(); } return rv; } private Calendar getNew(Calendar begin){ begin.add(Calendar.DATE, 1); begin.set(Calendar.HOUR_OF_DAY, Integer.valueOf(morningBegin.substring(0,2))); begin.set(Calendar.MINUTE, Integer.valueOf(morningBegin.substring(3,5))); begin.set(Calendar.SECOND, 0); return begin; } //核心計算函式，返回日期 private Date func(Calendar begin, double hours){ begin = getBeginDay(begin); //int h = begin.get(Calendar.HOUR_OF_DAY); SimpleDateFormat format = new SimpleDateFormat("HH:mm"); String bhTime = format.format(begin.getTime()); try { Date h = format.parse(bhTime); Date mgBegin = format.parse(morningBegin); Date mgEnd = format.parse(morningEnd); Date afBegin = format.parse(afternoonBegin); Date afEnd = format.parse(afternoonEnd); if (h.getTime() < mgBegin.getTime()){ //全天 if (hours > (((afEnd.getTime() - afBegin.getTime())/(double)3600000) + ((mgEnd.getTime() - mgBegin.getTime())/(double)3600000))){ begin = getNew(begin); hours = hours - (((afEnd.getTime() - afBegin.getTime())/(double)3600000) + ((mgEnd.getTime() - mgBegin.getTime()))/(double)3600000); return func(begin, hours); }else{ /** * 這裡要判斷下，這個小時是否大於上午的工作時間，大於的話，時間就的到下午去了 */ if (hours > ((mgEnd.getTime() - mgBegin.getTime())/(double)3600000)){ begin.set(Calendar.HOUR_OF_DAY, Integer.valueOf(afternoonBegin.substring(0,2))); begin.set(Calendar.MINUTE, Integer.valueOf(afternoonBegin.substring(3,5))); hours = hours - ((mgEnd.getTime() - mgBegin.getTime())/(double)3600000); }else{ begin.set(Calendar.HOUR_OF_DAY, Integer.valueOf(morningBegin.substring(0,2))); begin.set(Calendar.MINUTE, Integer.valueOf(morningBegin.substring(3,5))); } //begin.set(Calendar.MINUTE, 0); begin.set(Calendar.SECOND, 0); begin.set(Calendar.MILLISECOND, 0); long time = begin.getTime().getTime(); hours = hours * 60 * 60 * 1000; time += hours; return new Date(time); } }else if (h.getTime() >= afEnd.getTime()){ //過期，新增一天，重新算 begin.add(Calendar.DATE, 1); return func(begin, hours); }else{ //計算 long tm = getDayMiLLI(begin, true);//今天的時間 double houts_m = hours * 60 * 60 * 1000; if (tm >= houts_m){ //不跨天，計算今天的 if (h.getTime() < mgEnd.getTime()){ //在上午 long rv = 0; rv += mgEnd.getTime() - h.getTime(); //rv -= begin.get(Calendar.MINUTE) * 60 * 1000; rv -= begin.get(Calendar.SECOND) * 1000; rv -= begin.get(Calendar.MILLISECOND); if (houts_m > rv){ //到下午 begin.set(Calendar.HOUR_OF_DAY, Integer.valueOf(afternoonBegin.substring(0,2))); begin.set(Calendar.MINUTE, Integer.valueOf(afternoonBegin.substring(3,5))); begin.set(Calendar.SECOND, 0); begin.set(Calendar.MILLISECOND, 0); long time = begin.getTime().getTime(); time += (houts_m - rv); return new Date(time); }else{ //還在上午 long time = begin.getTime().getTime(); time += houts_m; return new Date(time); } }else if (h.getTime() >= afBegin.getTime()){ //在下午 long time = begin.getTime().getTime(); time += houts_m; return new Date(time); }else{ //在中間 begin.set(Calendar.HOUR_OF_DAY, Integer.valueOf(afternoonBegin.substring(0,2))); begin.set(Calendar.MINUTE, Integer.valueOf(afternoonBegin.substring(3,5))); begin.set(Calendar.SECOND, 0); begin.set(Calendar.MILLISECOND, 0); long time = begin.getTime().getTime(); time += houts_m; return new Date(time); } }else{ //跨天，到第二天 begin = getNew(begin); hours = (houts_m - tm) / (double)3600000; return func(begin, hours); } } }catch (ParseException e) { e.printStackTrace(); return null; } }
修改的部分是支援了不是整點上下班的問題。