JAVA判断当前时间是否为节假日、周末、工作日，调休日，不报错:IOException！

2023-11-29 07:07| 来源: 网络整理| 查看: 265

JAVA判断当前时间是否为节假日、周末、工作日

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需求

有这么个需求，需要判断传的这个日期是否为节假日，周末，工作日，然后做剩下的操作。

话不多说，上代码 1.首先需要拿到节假日api

节假日API地址

其实这个api里有接口可以直接判断某天是否为周末，节假日，工作日；但是这个接口访问多了会报一个403的错误，也就是请求太多导致的；而我下面的内容是只请求一次全年节假日即可，放到一个集合里，第二次请求判断的时候就可以直接去集合里判断。速度很快！ 2.拿到自己适用接口，如下:

参数： 1》year：格式“yyyy”,查询这一年的节假日

https://timor.tech/api/holiday/year

返回数据示例：

{ "code": 0, "holiday": { "01-01": { "holiday": true, "name": "元旦", "wage": 3, "date": "2023-01-01", "rest": 1 }, "01-02": { "holiday": true, "name": "元旦", "wage": 2, "date": "2023-01-02", "rest": 1 }, "01-21": { "holiday": true, "name": "除夕", "wage": 3, "date": "2023-01-21", "rest": 2 }, ..........

截图如下

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3.拿到项目中，编写成一个HolidayUtil 工具类，代码如下： /** * 判断今天是工作日/周末/节假日工具类 * //0 上班 1周末 2节假日 */ public class HolidayUtil { static Map holiday =new HashMap();//假期 static Map extraWorkDay =new HashMap();//调休日 //判断是否为节假日 /** * * @param time 日期参数格式‘yyyy-MM-dd’，不传参则默认当前日期 * @return */ public static String isWorkingDay(String time) throws ParseException { Date parse = null; //为空则返回当前时间 if (StringUtils.isNotBlank(time)){ SimpleDateFormat getYearFormat = new SimpleDateFormat("yyyy-MM-dd"); parse = getYearFormat.parse(time); }else { parse = new Date(); } String newDate = new SimpleDateFormat("yyyy").format(parse); //判断key是否有参数年份 if(!holiday.containsKey(newDate)){ String holiday = getYearHoliday(newDate); if ("No!".equals(holiday)){ return "该年份未分配日期安排！"; } } //得到日期是星期几 Date date = DateUtil.formatStringToDate(time, false); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); int weekday = DateUtil.getDayOfWeek(calendar); //是否节假日 if(holiday.get(newDate).contains(time)){ return "2"; }else if(extraWorkDay.get(newDate).contains(time)){//是否为调休 return "0"; }else if(weekday == Calendar.SATURDAY || weekday == Calendar.FRIDAY){//是否为周末 return "1"; }else{ return "0"; } } /** * * @param date 日期参数格式‘yyyy’，不传参则默认当前日期 * @return */ public static String getYearHoliday(String date) throws ParseException { //获取免费api地址 String httpUrl="https://timor.tech/api/holiday/year/"+date; BufferedReader reader = null; String result = null; StringBuffer sbf = new StringBuffer(); try { URL url = new URL(httpUrl); URLConnection connection = url.openConnection(); //connection.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)"); connection.setRequestProperty("User-Agent", "Mozilla/4.76"); //使用Get方式请求数据 //connection.setRequestMethod("GET"); //connection.connect(); InputStream is = connection.getInputStream(); reader = new BufferedReader(new InputStreamReader(is, "UTF-8")); String strRead = null; while ((strRead = reader.readLine()) != null) { sbf.append(strRead); sbf.append("\r\n"); } reader.close(); //字符串转json JSONObject json = JSON.parseObject(sbf.toString()); //根据holiday字段获取jsonObject内容 JSONObject holiday = json.getJSONObject("holiday"); if (holiday.size() == 0){ return "No!"; } List hoList = new ArrayList(); List extraList = new ArrayList(); for (Map.Entry entry : holiday.entrySet()) { String value = entry.getValue().toString(); JSONObject jsonObject = JSONObject.parseObject(value); String hoBool = jsonObject.getString("holiday"); String extra = jsonObject.getString("date"); //判断不是假期后调休的班 if(hoBool.equals("true")){ hoList.add(extra); HolidayUtil.holiday.put(date,hoList); }else { extraList.add(extra); HolidayUtil.extraWorkDay.put(date,extraList); } } } catch (Exception e) { e.printStackTrace(); } return result; } }

DateUtil工具类，这里写了很多，可以把不需要的删除掉

/** * 日期工具 */ public class DateUtil { /** * 输出当天的时间，格式如：20151207 * * @return */ public static String today() { SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd"); return format.format(new Date()); } /** * 当前时间 * @return */ public static String currTime() { SimpleDateFormat sdfDetail = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = new Date(); return sdfDetail.format(date); } /** * 当前年 * @return */ public static String currYear() { SimpleDateFormat sdfDetail = new SimpleDateFormat("yyyy"); Date date = new Date(); return sdfDetail.format(date); } public static String format(Date date, String tpl) { SimpleDateFormat format = new SimpleDateFormat(tpl); return format.format(date); } /** * 任意一天的开始时间 * * @return date */ public static Date startOfDay(Date date) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.SECOND, 0); calendar.set(Calendar.MILLISECOND, 0); Date returnDate = calendar.getTime(); return returnDate; } /** * 任意一天的结束时间 * * @return date */ public static Date endOfDay(Date date) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.MINUTE, 59); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MILLISECOND, 999); Date returnDate = calendar.getTime(); return returnDate; } /** * 获取时间戳的开始时间 * @param timestamp */ public static Long startOfDayByTimestamp(Long timestamp) { Date date = new Date(timestamp); return startOfDay(date).getTime(); } /** * 获取时间戳的结束时间 * zg * @param timestamp */ public static Long endOfDayByTimestamp(Long timestamp) { Date date = new Date(timestamp); return endOfDay(date).getTime(); } /** * 当天的开始时间 * * @return */ public static Date startOfTodDay() { Calendar calendar = Calendar.getInstance(); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.SECOND, 0); calendar.set(Calendar.MILLISECOND, 0); Date date = calendar.getTime(); return date; } /** * 当天的结束时间 * * @return */ public static Date endOfTodDay() { Calendar calendar = Calendar.getInstance(); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.MINUTE, 59); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MILLISECOND, 999); Date date = calendar.getTime(); return date; } /** * 昨天的开始时间 * * @return */ public static Date startOfyesterday() { Calendar calendar = Calendar.getInstance(); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.SECOND, 0); calendar.add(Calendar.DATE, -1); calendar.set(Calendar.MILLISECOND, 0); Date date = calendar.getTime(); return date; } /** * 昨天的结束时间 * * @return */ public static Date endOfyesterday() { Calendar calendar = Calendar.getInstance(); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.MINUTE, 59); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MILLISECOND, 999); calendar.add(Calendar.DATE, -1); Date date = calendar.getTime(); return date; } /** * 功能：获取本周的开始时间示例：2013-05-13 00:00:00 */ public static Date startOfThisWeek() {// 当周开始时间 Calendar currentDate = Calendar.getInstance(); currentDate.setFirstDayOfWeek(Calendar.MONDAY); currentDate.set(Calendar.HOUR_OF_DAY, 0); currentDate.set(Calendar.MINUTE, 0); currentDate.set(Calendar.SECOND, 0); currentDate.set(Calendar.MILLISECOND, 0); currentDate.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY); Date date = currentDate.getTime(); return date; } /** * 功能：获取String日期对应的时间戳 * format 格式自定 * * @return */ public static Long formatStringToStamp(String base, String format) { DateFormat df = new SimpleDateFormat(format); Date baseTime; Long stamp = null; try { baseTime = df.parse(base); stamp = baseTime.getTime(); } catch (Exception e) { return null; } return stamp; } /** * 功能：获取String日期对应的时间 * isTotal = false ;yyyy-MM-dd格式限定 * isTotal = true ;yyyy-MM-dd hh-mm-ss格式限定 */ public static Date formatStringToDate(String base, Boolean isTotal) { String format = isTotal ? "yyyy-MM-dd hh-mm-ss" : "yyyy-MM-dd"; DateFormat df = new SimpleDateFormat(format); Date baseTime; try { baseTime = df.parse(base); } catch (Exception e) { return null; } return baseTime; } /** * 功能：获取本周的结束时间示例：2013-05-19 23:59:59 */ public static Date endOfThisWeek() {// 当周结束时间 Calendar currentDate = Calendar.getInstance(); currentDate.setFirstDayOfWeek(Calendar.MONDAY); currentDate.set(Calendar.HOUR_OF_DAY, 23); currentDate.set(Calendar.MINUTE, 59); currentDate.set(Calendar.SECOND, 59); currentDate.set(Calendar.MILLISECOND, 999); currentDate.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY); Date date = currentDate.getTime(); return date; } /** * 功能：获取本月的开始时间 */ public static Date startOfThisMonth() {// 当周开始时间 Calendar currentDate = Calendar.getInstance(); currentDate.set(Calendar.HOUR_OF_DAY, 0); currentDate.set(Calendar.MINUTE, 0); currentDate.set(Calendar.SECOND, 0); currentDate.set(Calendar.MILLISECOND, 0); currentDate.set(Calendar.DAY_OF_MONTH, 1); Date date = currentDate.getTime(); return date; } public static Date endOfThisMonth() { Calendar cal = Calendar.getInstance(); cal.set(Calendar.DAY_OF_MONTH, 1); cal.set(Calendar.HOUR_OF_DAY, 23); cal.set(Calendar.MINUTE, 59); cal.set(Calendar.SECOND, 59); cal.set(Calendar.MILLISECOND, 999); cal.add(Calendar.MONTH, 1); cal.add(Calendar.DATE, -1); Date date = cal.getTime(); return date; } /** * 功能：获取上月的开始时间 */ public static Date startOfLastMonth() {// 当周开始时间 Calendar currentDate = Calendar.getInstance(); currentDate.set(Calendar.HOUR_OF_DAY, 0); currentDate.set(Calendar.MINUTE, 0); currentDate.set(Calendar.SECOND, 0); currentDate.set(Calendar.MILLISECOND, 0); currentDate.set(Calendar.DAY_OF_MONTH, 1); currentDate.add(Calendar.MONTH, -1); Date date = currentDate.getTime(); return date; } /** * 功能：获取上月的结束时间 */ public static Date endOfLastMonth() { Calendar cal = Calendar.getInstance(); cal.set(Calendar.DAY_OF_MONTH, 1); cal.set(Calendar.HOUR_OF_DAY, 23); cal.set(Calendar.MINUTE, 59); cal.set(Calendar.SECOND, 59); cal.set(Calendar.MILLISECOND, 999); cal.add(Calendar.DATE, -1); Date date = cal.getTime(); return date; } private static final int[] DAY_OF_MONTH = new int[]{31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; public static final String[] DATE_FORMATS = new String[]{"yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM-dd", "yyyy-MM", "yyyy-MM-dd HH:mm:ss.S", "yyyy年MM月dd日", "yyyy年MM月dd日 HH:mm", "yyyyMMdd", "yyyy年MM月dd日 HH:mm:ss", "MM.dd"}; /** * 将传入的日期转化为"yyyy-MM-dd"形式的字符串 * * @param dt 日期 * @return 指定日期格式的字符串 */ public static String formatDate(Date dt) { return formatDate("yyyy-MM-dd", dt); } /** * 将传入的日期转化为"yyyy-MM-dd HH:mm:ss"形式的字符串 * * @param dt 日期 * @return 指定日期格式的字符串 */ public static String formatDateYMDHMS(Date dt) { return formatDate("yyyy-MM-dd HH:mm:ss", dt); } /** * 将传入的日期转化为"yyyy-MM-dd HH:mm"形式的字符串 * * @param dt 日期 * @return 指定日期格式的字符串 */ public static String formatDateYMDHM(Date dt) { return formatDate("yyyy-MM-dd HH:mm", dt); } /** * 将传入的日期以指定格式转成字符串 * * @param format * @param dt * @return */ public static String formatDate(String format, Date dt) { if (dt == null) { return ""; } if (format.isEmpty()) { format = "yyyy-MM-dd"; } SimpleDateFormat fmt = new SimpleDateFormat(format); return fmt.format(dt); } /** * 将日期字符串转为日期 * * @param dateStr 日期字符串 * @return */ public static Date parseDate(String dateStr) { return parseDate(dateStr, DATE_FORMATS); } /** * 将日期字符串转为指定格式的日期 * * @param dateStr 日期字符串 * @param format 日期格式 * @return */ public static Date parseDate(String dateStr, String format) { return parseDate(dateStr, new String[]{format}); } private static Date parseDate(String dateStr, String[] parsePatterns) { try { return DateUtils.parseDate(dateStr, parsePatterns); } catch (ParseException e) { e.printStackTrace(); return null; } } /** * 获取今天的日期 * * @return */ public static Date getToday() { Calendar cal = Calendar.getInstance(); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); return cal.getTime(); } /** * 得到传入日期n天后的日期,如果传入日期为null，则表示当前日期n天后的日期 * * @param dt 日期 * @param days 可以为任何整数，负数表示前days天，正数表示后days天 * @return Date */ public static Date getAddDayDate(Date dt, int days) { Calendar cal = Calendar.getInstance(); if (dt != null) { cal.setTime(dt); } cal.add(Calendar.DAY_OF_MONTH, days); return cal.getTime(); } /** * 得到当前日期几天后（plusDays>0）or 几天前（plusDays if (dt == null) dt = new Date(System.currentTimeMillis()); Calendar cal = Calendar.getInstance(); cal.setTime(dt); cal.add(Calendar.HOUR, hours); return cal.getTime(); } /** * 给定的时间再加上指定分钟数 * * @param dt * @param minutes * @return */ public static Date getAddMinuteDate(Date dt, int minutes) { if (dt == null) dt = new Date(System.currentTimeMillis()); Calendar cal = Calendar.getInstance(); cal.setTime(dt); cal.add(Calendar.MINUTE, minutes); return cal.getTime(); } /** * 给定的时间再加上指定月份数 * * @param dt * @param months * @return */ public static Date getAddMonthDate(Date dt, int months) { if (dt == null) dt = new Date(System.currentTimeMillis()); Calendar cal = Calendar.getInstance(); cal.setTime(dt); cal.add(Calendar.MONTH, months); return cal.getTime(); } /** * 给定的时间再加上指定年 * @param dt * @param year * @return */ public static Date getAddYearDate(Date dt, int year) { if (dt == null) dt = new Date(System.currentTimeMillis()); Calendar cal = Calendar.getInstance(); cal.setTime(dt); cal.add(Calendar.YEAR, year); return cal.getTime(); } /** * 获得某天的零点时刻0:0:0 * * @param date 日期 * @return */ public static Date getDayBegin(Date date) { if (date == null) return null; Calendar cal = Calendar.getInstance(); cal.setTime(date); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); return cal.getTime(); } /** * 获得某天的截至时刻23:59:59 * * @param date * @return */ public static Date getDayEnd(Date date) { if (date == null) return null; Calendar cal = Calendar.getInstance(); cal.setTime(date); cal.set(Calendar.HOUR_OF_DAY, 23); cal.set(Calendar.MINUTE, 59); cal.set(Calendar.SECOND, 59); cal.set(Calendar.MILLISECOND, 999); return cal.getTime(); } /** * 某月的起始时间,eg：param:2011-11-10 12:10:50.999, return：2011-11-1 00:00:00.000 */ public static Date getMonthBeginTime(Date dt) { if (dt == null) dt = new Date(System.currentTimeMillis()); Calendar cal = Calendar.getInstance(); cal.setTime(dt); cal.set(Calendar.DAY_OF_MONTH, 1); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); return cal.getTime(); } /** * 某月的截止时间,eg：param:2011-11-10 12:10:50.999, return：2011-11-30 23:59:59.999 */ public static Date getMonthEndTime(Date dt) { if (dt == null) dt = new Date(System.currentTimeMillis()); Calendar cal = Calendar.getInstance(); cal.setTime(dt); cal.set(Calendar.MONTH, cal.get(Calendar.MONTH) + 1); cal.set(Calendar.DAY_OF_MONTH, 1); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, -1); return cal.getTime(); } /** * 获得传入日期的年\月\日,以整型数组方式返回 * * @param dt * @return int[] */ public static int[] getTimeArray(Date dt) { if (dt == null) dt = new Date(System.currentTimeMillis()); int[] timeArray = new int[3]; Calendar cal = Calendar.getInstance(); cal.setTime(dt); timeArray[0] = cal.get(Calendar.YEAR); timeArray[1] = cal.get(Calendar.MONTH) + 1; timeArray[2] = cal.get(Calendar.DAY_OF_MONTH); return timeArray; } /** * 获得传入日期的年\月\日\小时\分,以整型数组方式返回 * * @param dt * @return */ public static int[] timeArray(Date dt) { if (dt == null) dt = new Date(System.currentTimeMillis()); int[] timeArray = new int[5]; Calendar cal = Calendar.getInstance(); cal.setTime(dt); timeArray[0] = cal.get(Calendar.YEAR); timeArray[1] = cal.get(Calendar.MONTH) + 1; timeArray[2] = cal.get(Calendar.DAY_OF_MONTH); timeArray[3] = cal.get(Calendar.HOUR_OF_DAY); timeArray[4] = cal.get(Calendar.MINUTE); return timeArray; } /** * 根据年月日得到Date类型时间 * * @param year * @param month * @param day * @return Date */ public static Date getTime(Integer year, Integer month, Integer day) { Calendar cal = Calendar.getInstance(); if (year != null) cal.set(Calendar.YEAR, year); if (month != null) cal.set(Calendar.MONTH, month - 1); if (day != null) cal.set(Calendar.DAY_OF_MONTH, day); return cal.getTime(); } /** * @param parrern 格式化字符串例如：yyyy-MM-dd * @param str 时间字符串例如：2007-08-01 * @return 出错返回null * 通过格式化字符串得到时间 */ public static Date getDateFromPattern(String parrern, String str) { SimpleDateFormat fmt = new SimpleDateFormat(parrern); try { return fmt.parse(str); } catch (ParseException e) { e.printStackTrace(); } return null; } /** * 计算两个日期间相隔的小时 * * @param d1 日期1 * @param d2 日期2 * @return */ public static int getHourBetween(Date d1, Date d2) { long m = d1.getTime(); long n = d2.getTime(); return (int) ((m - n) / 3600000); } /** * 取得两个时间之间的天数，可能是负数(第二个时间的日期小于第一个时间的日期)。如果两个时间在同一天，则返回0 * * @param d1 第一个时间 * @param d2 第二个时间 * @return * @author Derek * @version 1.0 2009-10-14 */ public static int getDayBetween(Date d1, Date d2) { Calendar c1 = Calendar.getInstance(); c1.setTime(d1); Calendar c2 = Calendar.getInstance(); c2.setTime(d2); return (int) ((c2.getTimeInMillis() - c1.getTimeInMillis()) / 86400000); } /** * 计算两个日期间相隔的秒数 * * @param d1 日期1 * @param d2 日期2 * @return */ public static long getSecondBetweem(Date d1, Date d2) { return (d1.getTime() - d2.getTime()) / 1000; } /** * 计算两个日期间相隔的月份数 * * @param d1 日期1 * @param d2 日期2 * @return */ public static int getMonthBetween(Date d1, Date d2) { Calendar c1 = Calendar.getInstance(); Calendar c2 = Calendar.getInstance(); c1.setTime(d1); c2.setTime(d2); return (c1.get(Calendar.YEAR) - c2.get(Calendar.YEAR)) * 12 + (c1.get(Calendar.MONTH) - c2.get(Calendar.MONTH)); } /** * 通过生日得到当前年龄 * * @param birthDay 以字符串表示的生日 * @return 返回以以字符串表示的年龄, 最小为0 */ public static String getAge(String birthDay) { if (birthDay.startsWith("0000")) { return "未知"; } if (!birthDay.matches("[0-9]{4}-[0-9]{1,2}-[0-9]{1,2}")) { return "未知"; } return getAge(parseDate(birthDay, "yyyy-MM-dd")); } /** * 通过生日得到当前年龄 * * @param birthDate 以日期表示的生日 * @return 返回以以字符串表示的年龄, 最小为0 */ public static String getAge(Date birthDate) { if (birthDate == null) { return "未知"; } Calendar cal = Calendar.getInstance(); if (cal.before(birthDate)) { throw new IllegalArgumentException("The birthDay is before Now. It is unbelievable!"); } int yearNow = cal.get(Calendar.YEAR); int monthNow = cal.get(Calendar.MONTH); int dayOfMonthNow = cal.get(Calendar.DAY_OF_MONTH); cal.setTime(birthDate); int yearBirth = cal.get(Calendar.YEAR); int monthBirth = cal.get(Calendar.MONTH); int dayOfMonthBirth = cal.get(Calendar.DAY_OF_MONTH); int age = yearNow - yearBirth; if (monthNow if (dayOfMonthNow } } else { age--; } } else { } return age + ""; } @SuppressWarnings("deprecation") public static int getIntAge(Date brithday) { if (brithday != null) { int dateMiss = Calendar.getInstance().getTime().getDate() - brithday.getDate();// 日差距 int monthMiss = Calendar.getInstance().getTime().getMonth() - brithday.getMonth();// 月份差距 int yearMiss = Calendar.getInstance().getTime().getYear() - brithday.getYear();// 年份差距 if (monthMiss > 0 || (monthMiss == 0 && dateMiss >= 0)) { return yearMiss; } else { return yearMiss - 1;// 周岁少两岁，SO在去掉一年 } } return 0; } /** * 根据周几的数字标记获得周几的汉字描述 */ public static String getCnWeekDesc(int weekNum) { String strWeek = ""; switch (weekNum) { case 1: strWeek = "周一"; break; case 2: strWeek = "周二"; break; case 3: strWeek = "周三"; break; case 4: strWeek = "周四"; break; case 5: strWeek = "周五"; break; case 6: strWeek = "周六"; break; case 7: strWeek = "周日"; break; } return strWeek; } /** * 获得"上下午"标识 * * @param date * @return */ public static String getCnAMPM(Date date) { Calendar cal = Calendar.getInstance(); cal.setTime(date); if (Calendar.AM == cal.get(Calendar.AM_PM)) return "上午"; else return "下午"; } /** * 判断两个日期是否相等 * * @param d1 日期1 * @param d2 日期2 * @return */ public static boolean isTimeEquals(Date d1, Date d2) { if (d1 == null || d2 == null) return false; return Math.abs(d1.getTime() - d2.getTime()) Calendar cal = Calendar.getInstance(); cal.setTime(date); return cal.get(Calendar.MONTH); } /** * 获取一个日期的天数 * * @param date * @return */ public static int getDay(Date date) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); return calendar.get(Calendar.DAY_OF_MONTH); } /** * 获取一个日期的小时数 * * @param date * @return */ public static int getHour(Date date) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); return calendar.get(Calendar.HOUR_OF_DAY); } /** * 获取一个日期的分钟 * * @param date 日期 * @return */ public static int getMinute(Date date) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); return calendar.get(Calendar.MINUTE); } /** * 获取一个日期的秒数 * * @param date 日期 * @return */ public static int getSecond(Date date) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); return calendar.get(Calendar.SECOND); } /** * 获取一个月的最大天数 * * @param year 年份 * @param month 月份 * @return */ public static int getMaxDayOfMonth(int year, int month) { if (month == 1 && isLeapYear(year)) { return 29; } return DAY_OF_MONTH[month]; } /** * 判断是否是润年 * * @param year 年份 * @return */ public static boolean isLeapYear(int year) { Calendar calendar = Calendar.getInstance(); return ((GregorianCalendar) calendar).isLeapYear(year); } /** * 得到本周的起始时间 * * @param currentDate * @return */ public static Date getBeginDateofThisWeek(Date currentDate) { Calendar current = Calendar.getInstance(); current.setTime(currentDate); int dayOfWeek = current.get(Calendar.DAY_OF_WEEK); if (dayOfWeek == 1) { // 如果是星期天，星期一则往前退6天 current.add(Calendar.DAY_OF_MONTH, -6); } else { current.add(Calendar.DAY_OF_MONTH, 2 - dayOfWeek); } current.set(Calendar.HOUR_OF_DAY, 0); current.set(Calendar.MINUTE, 0); current.set(Calendar.SECOND, 0); current.set(Calendar.MILLISECOND, 0); return current.getTime(); } @SuppressWarnings("deprecation") public static void main(String[] args) { Date addYearDate = getAddYearDate(new Date(), 2); System.out.println(formatDateYMDHMS(addYearDate)); } /** * 转化时间从指定格式日期为长整形 * * @param format * @param time * @return */ public static Long convertDateStringToDateLong(String format, String time) throws ParseException { if (time == null || time.trim().equals("")) { return null; } SimpleDateFormat fmt = new SimpleDateFormat(format); Date d = fmt.parse(time); return d.getTime(); } /** * 获得指定格式日期 * * @param date 日期 * @param format 指定格式 * @return */ public static Date getFormatDate(Date date, String format) { if (null == date) { return null; } if (null == format) { return parseDate(formatDate("yyyy-MM-dd", date), "yyyy-MM-dd"); } return parseDate(formatDate(format, date), format); } public static int getMinuteBetween(Date d1, Date d2) { if (d1 == null || d2 == null) return 0; long m = d1.getTime(); long n = d2.getTime(); return (int) ((m - n) / 60000); } /** * 计算创建时间到现在过去多久了 * * @param createTime * @return */ public static String getPastTime(Date createTime) { String pastTime; Date current = new Date(); int days = getDayBetween(current, createTime); int hours = 0; int mins = 0; if (days > 0) { pastTime = "1天前"; } else if ((hours = getHourBetween(current, createTime)) > 0) { pastTime = hours + "小时前"; } else if ((mins = getMinuteBetween(current, createTime)) > 0) { pastTime = mins + "分钟前"; } else { long seconds = getSecondBetweem(current, createTime); if (seconds > 5) { pastTime = seconds + "秒前"; } else { pastTime = "刚刚"; } } return pastTime; } /** * 获取从今天开始未来一周的星期和日期的映射表 1-星期一:2014-05-12，2-星期二:2014-05-13..... * * @return */ public static Map getDateForWeekDay() { Map weekDayDateMap = new HashMap(); Calendar calendar = Calendar.getInstance(); for (int i = 1; i dayOfWeek = 7; } weekDayDateMap.put(dayOfWeek + "", calendar.getTime()); calendar.add(Calendar.DAY_OF_MONTH, 1); } return weekDayDateMap; } /** * 获得本日星期数,星期一:1,星期日:7 如果传入null则默认为本日 * * @return */ public static int getDayOfWeek(Calendar calendar) { int today; if (calendar != null) { today = calendar.get(Calendar.DAY_OF_WEEK); } else { today = Calendar.getInstance().get(Calendar.DAY_OF_WEEK); } if (today == 1) return 7; else return today - 1; } /** * 获取日期的中国式星期几（1-7分别代表周一至周日） * * @param date * @return */ public static int getDayOfWeek(Date date) { if (date == null) { date = new Date(); } Calendar cal = Calendar.getInstance(); cal.setTime(date); return getDayOfWeek(cal); } /** * 判断两个日期是否为同一天 * * @param date1 * @param date2 * @return */ public static boolean isSameDate(Date date1, Date date2) { if (date1 == null || date2 == null) { return false; } Calendar calendar1 = Calendar.getInstance(); Calendar calendar2 = Calendar.getInstance(); calendar1.setTime(date1); calendar2.setTime(date2); if (calendar1.get(Calendar.YEAR) == calendar2.get(Calendar.YEAR) && calendar1.get(Calendar.MONTH) == calendar2.get(Calendar.MONTH) && calendar1.get(Calendar.DAY_OF_MONTH) == calendar2.get(Calendar.DAY_OF_MONTH)) { return true; } return false; } public static String formatDuration(long duration) { float secondUnit = 1000; String formatDuration = ""; DecimalFormat decimalFormat = new DecimalFormat(".00"); if (duration formatDuration = decimalFormat.format(duration / secondUnit) + "(秒)"; } else if (duration formatDuration = decimalFormat.format(duration / (secondUnit * 3600)) + "(小时)"; } else { formatDuration = decimalFormat.format(duration / (secondUnit * 3600 * 24)) + "(天)"; } return formatDuration; } public static long getTodayBeginTime() { return getDayBegin(new Date()).getTime(); } public static long getTodayEndTime() { return getDayEnd(new Date()).getTime(); } /** * 比较两个时间大小 * * @param startTime * @param endTime * @return int * @method compareDate() */ public static int compareDate(String startTime, String endTime) throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Date d1 = sdf.parse(startTime); Date d2 = sdf.parse(endTime); return d1.compareTo(d2); } /** * 是否是一个日期格式 * @param time * @param pattern * @return */ public static boolean isTime(String time,String pattern) { SimpleDateFormat sdf = new SimpleDateFormat(pattern); try { sdf.setLenient(false); sdf.parse(time); } catch (ParseException e) { return false; } return true; } /** * 转换时间标准格式 yyyy-MM-dd HH:mm:ss */ public static final ThreadLocal yMdHms = new ThreadLocal() { @Override protected DateFormat initialValue() { return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); } }; /** * 转换时间标准格式 yyyy-MM-dd */ public static final ThreadLocal yMd = new ThreadLocal() { @Override protected DateFormat initialValue() { return new SimpleDateFormat("yyyy-MM-dd"); } }; /** * 转换时间标准格式 yyyy-MM-dd HH:mm */ public static final ThreadLocal yMdHm = new ThreadLocal() { @Override protected DateFormat initialValue() { return new SimpleDateFormat("yyyy-MM-dd HH:mm"); } }; /** * 校验时间冲突 * @param dateA 2021-02-08 13:00~2021-02-08 13:00 * @param dateB 2021-02-08 13:00~2021-02-08 13:00 * @return 冲突返回true,不冲突返回false */ public static Boolean checkDateConflict(String dateA, String dateB) { List dateAList = new ArrayList(Arrays.asList(dateA.split("~"))); List dateBList = new ArrayList(Arrays.asList(dateB.split("~"))); try { Date dateA1 = DateUtil.yMdHm.get().parse(dateAList.get(0)); Date dateA2 = DateUtil.yMdHm.get().parse(dateAList.get(1)); Date dateB1 = DateUtil.yMdHm.get().parse(dateBList.get(0)); Date dateB2 = DateUtil.yMdHm.get().parse(dateBList.get(1)); //dateA开始时间大于dateB结束时间，不冲突 if (dateA1.compareTo(dateB2) >= 0) { return false; } //dateA结束时间小于dateB开始时间，不冲突 if (dateA2.compareTo(dateB1) throw new MessageException("时间格式异常"); } return true; } /** * 计算一个日期N天后的时间 * @param date * @param n * @return * @throws ParseException */ public static String afterNDay(Date date,int n){ Calendar c=Calendar.getInstance(); SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd hh:mm:ss"); c.setTime(date); c.add(Calendar.DATE,n); Date d2=c.getTime(); String s=df.format(d2); return s; } /** * 计算两个日期相差了多少天 * @param date1 * @param date2 * @return */ public static int differentDaysByMillisecond(Date date1,Date date2) { int days = (int) ((date2.getTime() - date1.getTime()) / (1000*3600*24)); return days; } /** * 计算两个字符串日期(格式“yyyy-MM-dd”)相差了多少天 * @param date1 * @param date2 * @return */ public static int differentStrDaysByMillisecond(String date1,String date2) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Date parse1 = null; Date parse2 = null; try { parse1 = sdf.parse(date1); parse2 = sdf.parse(date2); } catch (ParseException e) { e.printStackTrace(); } int days = (int) ((parse1.getTime() - parse2.getTime()) / (1000*3600*24)); return days; } /** * 获取本周周一 yyyy-MM-dd * @return */ public static String getWeekBegin(){ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Calendar cal = Calendar.getInstance(); //设置一个星期的第一天，按中国的习惯一个星期的第一天是星期一 cal.setFirstDayOfWeek(Calendar.MONDAY); //获得当前日期是一个星期的第几天 int dayWeek = cal.get(Calendar.DAY_OF_WEEK); if(dayWeek==1){ dayWeek = 8; } // 根据日历的规则，给当前日期减去星期几与一个星期第一天的差值 cal.add(Calendar.DATE, cal.getFirstDayOfWeek() - dayWeek); Date mondayDate = cal.getTime(); String weekBegin = sdf.format(mondayDate); return weekBegin; } /** * 获取本周周一 yyyy-MM-dd * @return */ public static String getWeekEnd(){ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Calendar cal = Calendar.getInstance(); //设置一个星期的第一天，按中国的习惯一个星期的第一天是星期一 cal.setFirstDayOfWeek(Calendar.MONDAY); //获得当前日期是一个星期的第几天 int dayWeek = cal.get(Calendar.DAY_OF_WEEK); if(dayWeek==1){ dayWeek = 8; } cal.add(Calendar.DATE, 4 +cal.getFirstDayOfWeek()); Date sundayDate = cal.getTime(); String weekEnd = sdf.format(sundayDate); return weekEnd; } } 4.调用工具类方法 public static void main(String[] args) { String date = "2023-07-12"; String yearHoliday = HolidayUtil.isWorkingDay(date); System.out.println(yearHoliday); }

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