日期工具类 DateUtil

浅浅的花香味﹌ 2022-04-16 02:00 297阅读 0赞

工作中需要用到各种日期格式化，以下为平时常用的格式化。

<table style="width:500px;"> 
 <tbody> 
  <tr> 
   <td>获取当前时间</td> 
   <td>Date getCurrentDateTime()</td> 
  </tr> 
  <tr> 
   <td>通用日期格式化</td> 
   <td>String getDateString</td> 
  </tr> 
  <tr> 
   <td>通用日期时间格式化，</td> 
   <td>String getDateTimeString</td> 
  </tr> 
  <tr> 
   <td>通用日期格式化</td> 
   <td>Date parseDate(String dateFormat, String date)</td> 
  </tr> 
  <tr> 
   <td>默认返回yyyy-MM-dd</td> 
   <td>Date parseDate4(Date date)</td> 
  </tr> 
  <tr> 
   <td>默认返回yyyy-MM-dd</td> 
   <td>String getDateString1(Date date)</td> 
  </tr> 
 </tbody> 
</table>

import java.text.DateFormat;
    import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.time.Instant;
    import java.time.LocalDate;
    import java.time.LocalDateTime;
    import java.time.ZoneId;
    import java.time.temporal.ChronoUnit;
    import java.util.Calendar;
    import java.util.Date;
    import java.util.GregorianCalendar;
    import java.util.Locale;
    import java.util.TimeZone;
    import javax.xml.datatype.XMLGregorianCalendar;
    
    public class DateUtil {
        public static final String TIME_PATTERN = "HH:mm";
        public static final String DATE_FORMAT_STRING1 = "yyyy-MM-dd";
        public static final String DATE_FORMAT_STRING2 = "yyyy/MM/dd";
        public static final String DATE_FORMAT_STRING3 = "yyyy年MM月dd日";
        public static final String DATE_FORMAT_STRING4 = "yyyyMMdd";
        public static final String DATE_FORMAT_STRING5 = "MMM-dd-yy";
        public static final String DATE_FORMAT_STRING6 = "dd.MM.yyyy";
        public static final String DATE_FORMAT_STRING7 = "yyyyMM";
        public static final String DATE_FORMAT_STRING8 = "dd-MMM-yy";
        public static final String DATE_FORMAT_STRING9 = "yyMMdd";
        public static final String en_FORMAT = "MMM dd yyyy";
        public static final String PAGE_SHOW_FORMAT_STRING = "MMM dd, yyyy";
        public static final String DATE_TIME_FORMAT_STRING1 = "yyyy-MM-dd HH:mm:ss";
        public static final String DATE_TIME_FORMAT_STRING14 = "yyyy/MM/dd HH:mm:ss";
        public static final String DATE_TIME_FORMAT_STRING2 = " HH:mm:ss";
        public static final String DATE_TIME_FORMAT_STRING3 = "yyyy年MM月dd日 HH时mm分ss秒";
        public static final String DATE_TIME_FORMAT_STRING4 = "yyyyMMddHHmmss";
        public static final String DATE_TIME_FORMAT_STRING5 = "dd.MM.yyyy HH:mm:ss";
        public static final String DATE_TIME_FORMAT_STRING52 = "dd.MM.yyyy";
        public static final String DATE_TIME_FORMAT_STRING6 = "MM/dd/yyyy HH:mm:ss";
        public static final String DATE_TIME_FORMAT_STRING7 = "yyyy-MM-dd HH:mm:ss";
        public static final String DATE_TIME_FORMAT_STRING8 = "MM/dd/yyyy HH:mm a";
        public static final String DATE_TIME_FORMAT_STRING9 = "yyyyMMddHHmm";
        public static final String DATE_TIME_FORMAT_STRING10 = "MM/dd/yyyy HH:mm:ss a";
        public static final String DATE_TIME_FORMAT_STRING11 = "yyyy-MM-dd-HH-mm-ss-ssss";
        public static final String DATE_TIME_FORMAT_STRING12 = "MM/dd/yyyy";
        public static final String DATE_TIME_FORMAT_STRING13 = "dd/MM/yyyy HH:mm:ss";
        public static final String DATE_TIME_FORMAT_STRING15 = "MM/dd/yyyy HH:mm";
        public static final String YEAR_FORMAT_STRING = "yyyy";
        public static final String TIME_FORMAT_STRING1 = "HH:mm:ss";
        public static final String TIME_FORMAT_STRING2 = "HH时mm分ss秒";
        public static final String UTC_TIME_FORMAT_STRING = "yyyy-MM-dd'T'HH:mm:ss'+'00:00";
        public static final String DATE_TIME_FORMAT_ISO = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'";
        public static final String SHORT_DATE_PATTERN_LINE = "yyyy-MM-dd";
    
        public static Date getCurrentDateTime() {
            Date date = new Date(System.currentTimeMillis());
            return date;
        }
    
        public static Date getCurrentDate() {
            Date date = Date.from(LocalDate.now().atStartOfDay(ZoneId.systemDefault()).toInstant());
            return date;
        }
    
        public static Date getDefUTCTime() {
            return new Date(0L);
        }
    
        public static Date parseISODate(String strDate) {
            try {
                SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
                return format.parse(strDate);
            } catch (Exception var2) {
                var2.printStackTrace();
                return null;
            }
        }
    
        public static long daysDiff(Date startDate, Date endDate) {
            ZoneId zoneId = ZoneId.systemDefault();
            LocalDate localDateStart = startDate.toInstant().atZone(zoneId).toLocalDate();
            LocalDate localDateEnd = endDate.toInstant().atZone(zoneId).toLocalDate();
            return ChronoUnit.DAYS.between(localDateStart, localDateEnd);
        }
    
        public static String getYearString(String yearFormat, Date date) {
            SimpleDateFormat format = new SimpleDateFormat(yearFormat);
            return format.format(date);
        }
    
        public static String getDateString(String dateFormat, Date date) {
            if (date == null) {
                return "";
            } else {
                SimpleDateFormat format = new SimpleDateFormat(dateFormat);
                return format.format(date);
            }
        }
    
        public static String getDateString2(String dateFormat, Date date) {
            SimpleDateFormat format = new SimpleDateFormat(dateFormat, Locale.ENGLISH);
            return format.format(date);
        }
    
        public static String getDateTimeString(String dateTimeFormat, Date date) {
            SimpleDateFormat format = new SimpleDateFormat(dateTimeFormat);
            return format.format(date);
        }
    
        public static String getTimeString(String timeFormat, Date date) {
            SimpleDateFormat format = new SimpleDateFormat(timeFormat);
            return format.format(date);
        }
    
        public static Date parseDate(String dateFormat, String date) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat(dateFormat);
            return format.parse(date);
        }
    
        public static Date parseDate2(String dateFormat, String date) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat(dateFormat, Locale.ENGLISH);
            return format.parse(date);
        }
    
        public static Date parseDate3(Date date) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd", Locale.ENGLISH);
    
            try {
                return format.parse(format.format(date));
            } catch (ParseException var3) {
                throw var3;
            }
        }
    
        public static Date parseDate4(Date date) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
    
            try {
                return format.parse(format.format(date));
            } catch (ParseException var3) {
                throw var3;
            }
        }
    
        public static Date parseDate14(Date date) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
    
            try {
                return format.parse(format.format(date));
            } catch (ParseException var3) {
                throw var3;
            }
        }
    
        public static Date parseDateTime(String dateTimeFormat, String date) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat(dateTimeFormat);
            return format.parse(date);
        }
    
        public static Date parseTime(String timeFormat, String date) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat(timeFormat);
            return format.parse(date);
        }
    
        public static String getDateString1(Date date) {
            return getDateString("yyyy-MM-dd", date);
        }
    
        public static String getDateString2(Date date) {
            return getDateString("yyyy/MM/dd", date);
        }
    
        public static String getDateStringCN(Date date) {
            return getDateString("yyyy年MM月dd日", date);
        }
    
        public static String getDateStringCompact(Date date) {
            return getDateString("yyyyMMdd", date);
        }
    
        public static String getDateTimeString4(Date date) {
            return getDateString("yyyyMMddHHmmss", date);
        }
    
        public static String getDateString5(Date date) {
            return getDateString2("MMM-dd-yy", date);
        }
    
        public static String getDateTimeString1(Date date) {
            return getDateTimeString("yyyy-MM-dd HH:mm:ss", date);
        }
    
        public static String getDateTimeString2(Date date) {
            return getDateTimeString(" HH:mm:ss", date);
        }
    
        public static String getDateTimeString13(Date date) {
            return getDateTimeString("dd/MM/yyyy HH:mm:ss", date);
        }
    
        public static String getDateTimeStringCN(Date date) {
            return getDateTimeString("yyyy年MM月dd日 HH时mm分ss秒", date);
        }
    
        public static String getTimeString(Date date) {
            return getTimeString("HH:mm:ss", date);
        }
    
        public static String getTimeStringCN(Date date) {
            return getTimeString("HH时mm分ss秒", date);
        }
    
        public static String getYearString(Date date) {
            return getYearString("yyyy", date);
        }
    
        public static Date getParseDate1(String date) throws ParseException {
            return parseDate("yyyy-MM-dd", date);
        }
    
        public static Date getParseDate14(String date) throws ParseException {
            return parseDate("yyyy/MM/dd HH:mm:ss", date);
        }
    
        public static Date getParseDates(String date) throws ParseException {
            return parseDate("MMM dd yyyy", date);
        }
    
        public static Date getParseDate3(String date) throws ParseException {
            return parseDate("yyyy-MM-dd HH:mm:ss", date);
        }
    
        public static Date getParseDate4(String date) throws ParseException {
            return parseDate("yyyyMMddHHmmss", date);
        }
    
        public static Date getParseDate2(String date) throws ParseException {
            return parseDate("yyyy/MM/dd", date);
        }
    
        public static int getYearOfDate(Date date) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
            String d = format.format(date);
            return Integer.parseInt(d.substring(0, 4));
        }
    
        public static int getMonthOfDate(Date date) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
            String d = format.format(date);
            return Integer.parseInt(d.substring(5, 7));
        }
    
        public static int getDayOfDate(Date date) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
            String d = format.format(date);
            return Integer.parseInt(d.substring(8, 10));
        }
    
        public static Date getFirstDay(String year, String month) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
            return format.parse(year + "-" + month + "-1");
        }
    
        public static Date getFirstDay(int year, int month) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
            return format.parse(year + "-" + month + "-1");
        }
    
        public static Date getLastDay(String year, String month) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
            Date date = format.parse(year + "-" + month + "-1");
            Calendar scalendar = new GregorianCalendar();
            scalendar.setTime(date);
            scalendar.add(2, 1);
            scalendar.add(5, -1);
            date = scalendar.getTime();
            return date;
        }
    
        public static Date getLastDay(int year, int month) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
            Date date = format.parse(year + "-" + month + "-1");
            Calendar scalendar = new GregorianCalendar();
            scalendar.setTime(date);
            scalendar.add(2, 1);
            scalendar.add(5, -1);
            date = scalendar.getTime();
            return date;
        }
    
        public static long getDistinctMonth(String fromDate, String toDate) throws ParseException {
            SimpleDateFormat d = new SimpleDateFormat("yyyy-MM-dd");
            long monthCount = 0L;
            Date d1 = d.parse(fromDate);
            Date d2 = d.parse(toDate);
            monthCount = (long)((d2.getYear() - d1.getYear()) * 12 + d2.getMonth() - d1.getMonth());
            return monthCount;
        }
    
        public static long getDistinctDay(String fromDate, String toDate) throws ParseException {
            SimpleDateFormat d = new SimpleDateFormat("yyyy-MM-dd");
            long dayCount = 0L;
            Date d1 = d.parse(fromDate);
            Date d2 = d.parse(toDate);
            dayCount = (d2.getTime() - d1.getTime()) / 86400000L;
            return dayCount;
        }
    
        public static long getDistinctDay(Date fromDate, Date toDate) throws ParseException {
            long dayCount = 0L;
            dayCount = (toDate.getTime() - fromDate.getTime()) / 86400000L;
            return dayCount;
        }
    
        public DateUtil() {
        }
    
        public static Date convertStringToDate(String aMask, String strDate) throws ParseException {
            SimpleDateFormat df = new SimpleDateFormat(aMask);
    
            try {
                Date date = df.parse(strDate);
                return date;
            } catch (ParseException var5) {
                throw new ParseException(var5.getMessage(), var5.getErrorOffset());
            }
        }
    
        public static String getTimeNow(Date theTime) {
            return getDateTime("HH:mm", theTime);
        }
    
        public static String getDateTime(String aMask, Date aDate) {
            SimpleDateFormat df = null;
            String returnValue = "";
            if (aDate == null) {
                return "";
            } else {
                df = new SimpleDateFormat(aMask);
                returnValue = df.format(aDate);
                return returnValue;
            }
        }
    
        public static boolean isDate(String strFormat, String strDate) {
            SimpleDateFormat df = new SimpleDateFormat(strFormat, Locale.ENGLISH);
    
            try {
                df.parse(strDate);
                return true;
            } catch (ParseException var4) {
                return false;
            }
        }
    
        public static boolean isDate(String strDate) {
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd", Locale.ENGLISH);
    
            try {
                df.parse(strDate);
                return true;
            } catch (ParseException var3) {
                return false;
            }
        }
    
        public static String convertDate(String aMask, String strDate) {
            SimpleDateFormat df = new SimpleDateFormat(aMask, Locale.ENGLISH);
            String str = "";
            str = df.format(new Date(strDate));
            return str;
        }
    
        public static String adjustDate(Date oldDate, int days) {
            SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(oldDate);
            calendar.add(5, days);
            Date newDate = calendar.getTime();
            return sf.format(newDate);
        }
    
        public static Date adjustDateForReturnDate(Date oldDate, int days) {
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(oldDate);
            calendar.add(5, days);
            Date newDate = calendar.getTime();
            return newDate;
        }
    
        public static String adjustDateForDateTime(Date oldDate, int days) {
            SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(oldDate);
            calendar.add(5, days);
            Date newDate = calendar.getTime();
            return sf.format(newDate);
        }
    
        public static String formatDateTime(Object o, String format) {
            String s = String.valueOf(o);
            if (s != null && !"".equals("")) {
                Date dt = (Date)o;
                String ds = getDateTimeString(format, dt);
                return ds;
            } else {
                return "";
            }
        }
    
        public static int spaceDays(Date beforeDate, Date afterDate) {
            long space = afterDate.getTime() - beforeDate.getTime();
            return (int)(space / 86400000L);
        }
    
        public static boolean compareDates(Date firstDate, Date secondDate) {
            double first = Math.floor((double)(firstDate.getTime() / 86400000L));
            double after = Math.floor((double)(secondDate.getTime() / 86400000L));
            return first > after;
        }
    
        public static String formatDate(Date date) {
            SimpleDateFormat f = new SimpleDateFormat("MMM dd yyyy", Locale.US);
            return f.format(date);
        }
    
        public static String getFormatDate(String format, String datetime) {
            SimpleDateFormat df = new SimpleDateFormat(format);
            String strDate = "";
    
            try {
                Date date = df.parse(datetime);
                df.applyPattern(format);
                strDate = df.format(date);
            } catch (ParseException var6) {
                ;
            }
    
            return strDate;
        }
    
        public static String formatDates(Date date) {
            SimpleDateFormat f = new SimpleDateFormat("MMM dd yyyy", Locale.US);
            return f.format(date);
        }
    
        public static Date getInitDate() throws Exception {
            return parseDate("yyyy-MM-dd", "0000-00-00");
        }
    
        public static boolean isBigDate(String strFormat, String strDate) {
            SimpleDateFormat df = new SimpleDateFormat(strFormat, Locale.ENGLISH);
    
            try {
                Date date = df.parse(strDate);
                DateFormat df2 = new SimpleDateFormat("yy-MM-dd");
                return date.compareTo(df2.parse("1900-01-01")) >= 0;
            } catch (ParseException var5) {
                return false;
            }
        }
    
        public static Date getYesterday() {
            Calendar cal = Calendar.getInstance();
            cal.setTime(new Date());
            cal.add(5, -1);
            return cal.getTime();
        }
    
        public static Date getDateByWeek(int week) {
            Calendar cal = Calendar.getInstance();
            cal.setTime(new Date());
            cal.add(4, week);
            return cal.getTime();
        }
    
        public static Date getDateBydays(Date date, int days) {
            Calendar scalendar = Calendar.getInstance();
            scalendar.setTime(date);
            scalendar.add(5, days);
            return scalendar.getTime();
        }
    
        public static int nDaysBetweenTwoDate(Date firstDate, Date secondDate) {
            int nDay = (int)(secondDate.getTime() - firstDate.getTime());
            return nDay;
        }
    
        public static int nDaysBetweenTwoDate_min(Date firstDate, Date secondDate) {
            int nDay = (int)((secondDate.getTime() - firstDate.getTime()) / 60000L);
            return nDay;
        }
    
        public static Date string2Timezone(Date srcDateTime, String dstTimeZoneId) {
            int diffTime = getDiffTimeZoneRawOffset(dstTimeZoneId);
            long nowTime = srcDateTime.getTime();
            long newNowTime = nowTime - (long)diffTime;
            srcDateTime = new Date(newNowTime);
            return srcDateTime;
        }
    
        private static int getDiffTimeZoneRawOffset(String timeZoneId) {
            return TimeZone.getDefault().getRawOffset() - TimeZone.getTimeZone(timeZoneId).getRawOffset();
        }
    
        public static int nDaysBetweenTwoDate_po(Date firstDate, Date secondDate) {
            int nDay = (int)((secondDate.getTime() - firstDate.getTime()) / 1000L);
            return nDay;
        }
    
        public static boolean compareDatesEq(Date firstDate, Date secondDate) {
            double first = Math.floor((double)(firstDate.getTime() / 86400000L));
            double after = Math.floor((double)(secondDate.getTime() / 86400000L));
            return first >= after;
        }
    
        public static int nDaysBetweenTwoDate_day(Date firstDate, Date secondDate) {
            return (int)((secondDate.getTime() - firstDate.getTime()) / 86400000L);
        }
    
        public static Date parseXMLUTCDate(String dateStr) throws ParseException {
            SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'+'00:00", Locale.ENGLISH);
            return sf.parse(dateStr);
        }
    
        public static Date parsePageShowDate(String dateStr) throws ParseException {
            SimpleDateFormat sf = new SimpleDateFormat("MMM dd, yyyy", Locale.ENGLISH);
            return sf.parse(dateStr);
        }
    
        public static Date trunsXMLGregorianCalendar(XMLGregorianCalendar xmlGregorianCalendar) {
            if (xmlGregorianCalendar == null) {
                return null;
            } else {
                Calendar cal = Calendar.getInstance();
                cal.set(xmlGregorianCalendar.getYear(), xmlGregorianCalendar.getMonth() - 1, xmlGregorianCalendar.getDay(), xmlGregorianCalendar.getHour(), xmlGregorianCalendar.getMinute(), xmlGregorianCalendar.getSecond());
                return cal.getTime();
            }
        }
    
        public static String getUtc2Local(String utcTime, String utcTimePatten, String localTimePatten) {
            SimpleDateFormat utcFormater = new SimpleDateFormat(utcTimePatten);
            utcFormater.setTimeZone(TimeZone.getTimeZone("UTC"));
            Date gpsUTCDate = null;
    
            try {
                gpsUTCDate = utcFormater.parse(utcTime);
            } catch (ParseException var7) {
                var7.printStackTrace();
                return utcTime;
            }
    
            SimpleDateFormat localFormater = new SimpleDateFormat(localTimePatten);
            localFormater.setTimeZone(TimeZone.getDefault());
            String localTime = localFormater.format(gpsUTCDate.getTime());
            return localTime;
        }
    
        public static String getBeijingDate(String date) throws ParseException {
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
            Date returnDate = format.parse(date);
            long Time = returnDate.getTime() / 1000L - 57600L;
            returnDate.setTime(Time * 1000L);
            return format.format(returnDate);
        }
    
        public static void main(String[] args) throws ParseException {
            Date cusDate = parseDate("yyyy-MM-dd HH:mm:ss", "2018-03-04 12:22:30");
            LocalDateTime localDateTime = LocalDateTime.now();
            ZoneId zone = ZoneId.of("America/Los_Angeles");
            Instant instant = localDateTime.atZone(zone).toInstant();
            Date date = Date.from(instant);
            Date d1 = parseDate("yyyy-MM-dd HH:mm:ss", "2018-03-21 17:00:02");
            Date d2 = parseDate("yyyy-MM-dd HH:mm:ss", "2018-03-20 00:00:00");
            daysDiff(d1, d2);
        }
    }