| | |
| | | return days; |
| | | } |
| | | |
| | | public static int calculateBetween(Date newDate, Date oldDate,Integer type){ |
| | | Calendar calo = Calendar.getInstance(); |
| | | Calendar caln = Calendar.getInstance(); |
| | | calo.setTime(oldDate); |
| | | caln.setTime(newDate); |
| | | if(type==0||type==1){ |
| | | return calculateDaysBetweenDates(caln, calo) + 1 ; |
| | | }else if(type==2){ |
| | | |
| | | int day = caln.get(Calendar.DATE); |
| | | if(day == 1){ |
| | | return calculateMonthsBetweenDates(caln, calo) + 1; |
| | | }else{ |
| | | return calculateMonthsBetweenDates(caln, calo); |
| | | } |
| | | |
| | | }else if(type==3){ |
| | | return calculateYearsBetweenDates(caln, calo) + 1; |
| | | } |
| | | return -1; |
| | | } |
| | | |
| | | |
| | | |
| | | public static int calculateDaysBetweenDates(Calendar startDate, Calendar endDate) { |
| | | long timeDiffInMillis = Math.abs(endDate.getTimeInMillis() - startDate.getTimeInMillis()); |
| | | return (int)(timeDiffInMillis / (24 * 60 * 60 * 1000)); |
| | | } |
| | | |
| | | public static int calculateMonthsBetweenDates(Calendar startDate, Calendar endDate) { |
| | | int yearDiff = endDate.get(Calendar.YEAR) - startDate.get(Calendar.YEAR); |
| | | int monthDiff = endDate.get(Calendar.MONTH) - startDate.get(Calendar.MONTH); |
| | | if (monthDiff < 0 || (monthDiff == 0 && endDate.get(Calendar.DAY_OF_MONTH) < startDate.get(Calendar.DAY_OF_MONTH))) { |
| | | yearDiff--; |
| | | monthDiff += 12; |
| | | } |
| | | return yearDiff * 12 + monthDiff; |
| | | } |
| | | |
| | | public static int calculateYearsBetweenDates(Calendar startDate, Calendar endDate) { |
| | | int yearDiff = endDate.get(Calendar.YEAR) - startDate.get(Calendar.YEAR); |
| | | if (yearDiff > 0 && (startDate.get(Calendar.MONTH) >= endDate.get(Calendar.MONTH) || |
| | | (startDate.get(Calendar.MONTH) == endDate.get(Calendar.MONTH) && startDate.get(Calendar.DAY_OF_MONTH) <= endDate.get(Calendar.DAY_OF_MONTH)))) { |
| | | yearDiff--; |
| | | } else if (yearDiff < 0 && (startDate.get(Calendar.MONTH) <= endDate.get(Calendar.MONTH) || |
| | | (startDate.get(Calendar.MONTH) == endDate.get(Calendar.MONTH) && startDate.get(Calendar.DAY_OF_MONTH) >= endDate.get(Calendar.DAY_OF_MONTH)))) { |
| | | yearDiff++; |
| | | } |
| | | return yearDiff; |
| | | } |
| | | |
| | | |
| | | |
| | | /** |
| | | * 取得与原日期相差一定天数的日期,返回Date型日期 |
| | | * |
| | |
| | | return sdfLongTimePlus.parse(sdfLongTimePlus.format(date)); |
| | | } |
| | | |
| | | public static void main(String[] args) { |
| | | try { |
| | | System.out.println(RandomStringUtils.randomNumeric(3)); |
| | | } catch (Exception ex) { |
| | | ex.printStackTrace(); |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * |
| | |
| | | return nowDateString; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * @ author zhangyong @ 获取当月的第一天,2009-05-01 |
| | | */ |
| | |
| | | return w; |
| | | } |
| | | |
| | | public static Long twoDaysBetween(Date beginDate, Date endDate) throws ParseException { |
| | | public static Long twoDaysBetween(Date beginDate, Date endDate) { |
| | | long minute = (endDate.getTime() - beginDate.getTime()) / (60 * 1000); |
| | | return minute; |
| | | } |
| | | |
| | | public static Integer daysBetweenDay(Date beginDate, Date endDate) { |
| | | long day = (endDate.getTime() - beginDate.getTime()) / (60 * 1000 * 60 * 24); |
| | | return Math.toIntExact(day); |
| | | } |
| | | |
| | | /** |
| | |
| | | cal.add(Calendar.MINUTE,minutes); |
| | | return cal.getTime(); |
| | | } |
| | | |
| | | |
| | | /** |
| | | * 计算多少自然年/月/日后的日期 |
| | | * @param startDate 开始日期 |
| | | * @param type 0=日;1=月;2=年; |
| | | * @param cycle 周期 X月 |
| | | * @return |
| | | */ |
| | | public static Date afterDateByType(Date startDate,Integer type,Integer cycle){ |
| | | Calendar calendar = Calendar.getInstance(); |
| | | calendar.setTime(startDate); |
| | | if(type==0){ |
| | | calendar.add(Calendar.DATE, cycle); |
| | | }else if(type==1){ |
| | | calendar.add(Calendar.MONTH, cycle); |
| | | }else if(type == 2) { |
| | | calendar.add(Calendar.YEAR, cycle); |
| | | } |
| | | return calendar.getTime(); |
| | | } |
| | | |
| | | |
| | | |
| | | public static Integer monthDays(Date date){ |
| | | Calendar calendar = Calendar.getInstance(); |
| | | calendar.setTime(date); |
| | | // 获取当前年份、月份(注意月份从0开始计算) |
| | | int year = calendar.get(Calendar.YEAR); |
| | | int month = calendar.get(Calendar.MONTH) + 1; |
| | | // 根据年份和月份判断闰年情况 |
| | | boolean isLeapYear = (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0); |
| | | |
| | | // 根据不同月份设定每个月的天数 |
| | | switch (month) { |
| | | case 2: |
| | | if (isLeapYear) { |
| | | return 29; |
| | | } else { |
| | | return 28; |
| | | } |
| | | case 4: |
| | | case 6: |
| | | case 9: |
| | | case 11: |
| | | return 30; |
| | | default: |
| | | return 31; |
| | | } |
| | | } |
| | | |
| | | |
| | | /** |
| | | * 拼接日期数据 |
| | | * @param date |
| | | * @param optType 1:每日开始 2:每日结束 3:昨日结束 |
| | | * @return |
| | | */ |
| | | public static Date getMontageDate(Date date ,Integer optType) { |
| | | String strShortDate = DateUtil.dateToString(date,"yyyy-MM-dd"); |
| | | if(optType.equals(1)){ |
| | | return DateUtil.StringToDate(strShortDate +" 00:00:00"); |
| | | }else if(optType.equals(2)){ |
| | | return DateUtil.StringToDate(strShortDate +" 23:59:59"); |
| | | }else if(optType.equals(3)){ |
| | | strShortDate = DateUtil.dateToString(DateUtil.getDateBetween(date,-1),"yyyy-MM-dd"); |
| | | return DateUtil.StringToDate(strShortDate +" 23:59:59"); |
| | | }else{ |
| | | return null; |
| | | } |
| | | } |
| | | |
| | | |
| | | public static void main(String[] args) { |
| | | // System.out.println(DateUtil.DateToStr(DateUtil.afterDateByType( |
| | | // DateUtil.stringToDate("2024-02-01","yyyy-MM-dd") |
| | | // ,1,1),"yyyy-MM-dd HH:mm:ss")); |
| | | |
| | | // System.out.println( DateUtil.daysBetweenDates(DateUtil.stringToDate("2024-02-29","yyyy-MM-dd"), |
| | | // DateUtil.stringToDate("2024-02-01","yyyy-MM-dd")) |
| | | // ); |
| | | // |
| | | // System.out.println(DateUtil.calculateBetween(DateUtil.StringToDate("2024-02-29 23:59:59"),DateUtil.StringToDate("2024-02-01 00:00:00"),0)); |
| | | |
| | | |
| | | System.out.println( |
| | | DateUtil.DateToStr( |
| | | |
| | | DateUtil.getMontageDate(DateUtil.StringToDate("2024-02-29 21:59:59"),1) ,"yyyy-MM-dd HH:mm:ss" |
| | | ) |
| | | ); |
| | | |
| | | |
| | | |
| | | System.out.println( |
| | | |
| | | DateUtil.DateToStr( |
| | | |
| | | DateUtil.getMontageDate(DateUtil.StringToDate("2024-02-29 21:59:59"),2) ,"yyyy-MM-dd HH:mm:ss" |
| | | ) |
| | | |
| | | ); |
| | | |
| | | System.out.println( |
| | | |
| | | DateUtil.DateToStr( |
| | | |
| | | DateUtil.getMontageDate(DateUtil.StringToDate("2024-02-29 21:59:59"),3) ,"yyyy-MM-dd HH:mm:ss" |
| | | ) |
| | | |
| | | ); |
| | | |
| | | // Calendar calo = Calendar.getInstance(); |
| | | // Calendar caln = Calendar.getInstance(); // ,"yyyy-MM-dd HH:mm:ss" |
| | | // caln.setTime(DateUtil.StringToDate("2024-02-29 23:59:59")); |
| | | // calo.setTime(DateUtil.StringToDate("2024-02-01 00:00:00")); |
| | | // System.out.println( DateUtil.calculateDaysBetweenDates(calo,caln)); |
| | | } |
| | | |
| | | |
| | | } |