java中时间常用处理工具类-DateUtils

仅供参考，收录了一些

import org.apache.commons.lang3.time.DateFormatUtils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.temporal.ChronoUnit;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.TimeZone;


 public class DateUtils extends org.apache.commons.lang3.time.DateUtils {

    public static String YYYY = "yyyy";

    public static String YYYY_MM = "yyyy-MM";

    public static String YYYY_MM_DD = "yyyy-MM-dd";

    public static String YYYY_MM_DD_ = "yyyy年-MM月-dd日";

    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

    private static String[] parsePatterns = {
            "yyyy-MM-dd"
            , "yyyy-MM-dd HH:mm:ss"
            , "yyyy-MM-dd HH:mm"
            , "yyyy-MM"
            , "yyyy/MM/dd"
            , "yyyy/MM/dd HH:mm:ss"
            , "yyyy/MM/dd HH:mm"
            , "yyyy/MM"
            , "yyyy.MM.dd"
            , "yyyy.MM.dd HH:mm:ss"
            , "yyyy.MM.dd HH:mm"
            , "yyyy.MM"
    };

    
    public static String retDatePoor(Date endDate, Date nowDate) {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }

    
    public static Date getNowDate() {
        return new Date();
    }

    
    public static int differentDaysByMillisecond(Date date1, Date date2) {
        return Math.abs((int) ((date2.getTime() - date1.getTime()) / (1000 * 3600 * 24)));
    }

    
    public static String getDate() {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime() {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow() {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format) {
        return parseDateToStr(format, new Date());
    }

    public static final String dateTime(final Date date) {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static final String parseDateToStr(final String format, final Date date) {
        return new SimpleDateFormat(format).format(date);
    }

    public static final Date dateTime(final String format, final String ts) {
        try {
            return new SimpleDateFormat(format).parse(ts);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    
    public static final String datePath() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    
    public static final String dateTime() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    
    public static Date parseDate(Object str) {
        if (str == null) {
            return null;
        }
        try {
            return parseDate(str.toString(), parsePatterns);
        } catch (ParseException e) {
            return null;
        }
    }

    
    public static Date getServerStartDate() {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    
    public static HashMap getDatePoor(Date endDate, Date nowDate) {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        HashMap map = new HashMap<>();
        map.put("day", (int) day);//天
        map.put("hour", (int) hour);//小时
        map.put("min", (int) min);//分
        return map;
    }

    public static final long getTimestamp() {
        return System.currentTimeMillis() / 1000;
    }

    
    public static Date getsSpecifiedRearDayTime(Integer day) {
        //不能超过 且不能等于30天
        Calendar cal = Calendar.getInstance();
        cal.setTimeInMillis(getNowDate().getTime() + 3600 * 24 * 1000 * day);
        return cal.getTime();
    }

    
    public static Date addDateYear(Date date, Integer year) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);//设置起时间
        cal.add(Calendar.YEAR, year);//增加指定年数
        return cal.getTime();
    }

    
    public static Date addDateMonth(Date date, Integer month) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);//设置起时间
        cal.add(Calendar.MONTH, month);//增加指定年数
        return cal.getTime();
    }

    
    public static Date addDateDay(Date date, Integer day) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);//设置起时间
        cal.add(Calendar.DATE, day);//增加指定年数
        return cal.getTime();
    }

    
    public static boolean judgmentDate(Date date1, Date date2) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-M-d HH:mm:ss");
        long cha = date1.getTime() - date2.getTime();
        System.out.println(cha);
        if (cha < 0) {
            //零点到八点之间，返回true
            if (cha >= -60 * 60 * 1000 * 8) {
                return true;
            }
            return false;
        }
        double result = cha * 1.0 / (1000 * 60 * 60);
        if (result <= 24) {
            return true;
        } else {
            return false;
        }
    }

    
    public static Date stringToDate(String dateStr, String pattern) {
        SimpleDateFormat format = new SimpleDateFormat(pattern);
        Date date = null;
        try {
            date = format.parse(dateStr);
        } catch (ParseException e) {
            System.out.println(e.getMessage());
            e.printStackTrace();
        }
        return date;
    }

    
    public static String plusStrDay(int num, String newDate) throws ParseException {
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date currdate = format.parse(newDate);
        System.out.println("现在的日期是：" + currdate);
        Calendar ca = Calendar.getInstance();
        ca.setTime(currdate);
        ca.add(Calendar.DATE, num);// num为增加的天数，可以改变的
        currdate = ca.getTime();
        String enddate = format.format(currdate);
        System.out.println("增加天数以后的日期：" + enddate);
        return enddate;
    }

    
    public static Date plusDay(int num, Date newDate) {
        System.out.println("现在的日期是：" + newDate);
        Calendar ca = Calendar.getInstance();
        ca.setTime(newDate);
        ca.add(Calendar.DATE, num);// num为增加的天数，可以改变的
        newDate = ca.getTime();
        System.out.println("增加天数以后的日期：" + newDate);
        return newDate;
    }

    
    public static Date plusDayByNum(int num) {
        Date d = new Date();
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String currdate = format.format(d);
        System.out.println("现在的日期是：" + currdate);

        Calendar ca = Calendar.getInstance();
        ca.add(Calendar.DATE, num);// num为增加的天数，可以改变的
        d = ca.getTime();

//        String enddate = format.format(d); //转化为字符串类型输出
//        System.out.println("增加天数以后的日期：" + enddate);
        System.out.println("增加天数以后的日期：" + d);
        return d;
    }

    
    public static Date wxTimeEnd(String endTime) throws ParseException {
        if (endTime == null || "".equals(endTime)) {
            return new Date();
        }
        SimpleDateFormat format = new SimpleDateFormat(YYYYMMDDHHMMSS);
        Date currdate = format.parse(endTime);
        return currdate;
    }

    
    public static Date formatonversion(Date date, String pattern) throws ParseException {
        SimpleDateFormat format = new SimpleDateFormat(pattern);
        String s = format.format(date);
        date = format.parse(s);
        return date;
    }

    
    public static int getMonth(Date start, Date end) {
        if (start.after(end)) {
            Date t = start;
            start = end;
            end = t;
        }
        Calendar startCalendar = Calendar.getInstance();
        startCalendar.setTime(start);
        Calendar endCalendar = Calendar.getInstance();
        endCalendar.setTime(end);
        Calendar temp = Calendar.getInstance();
        temp.setTime(end);
        temp.add(Calendar.DATE, 1);

        int year = endCalendar.get(Calendar.YEAR)
                - startCalendar.get(Calendar.YEAR);
        int month = endCalendar.get(Calendar.MONTH)
                - startCalendar.get(Calendar.MONTH);

        if ((startCalendar.get(Calendar.DATE) == 1)
                && (temp.get(Calendar.DATE) == 1)) {
            return year * 12 + month + 1;
        } else if ((startCalendar.get(Calendar.DATE) != 1)
                && (temp.get(Calendar.DATE) == 1)) {
            return year * 12 + month;
        } else if ((startCalendar.get(Calendar.DATE) == 1)
                && (temp.get(Calendar.DATE) != 1)) {
            return year * 12 + month;
        } else {
            return (year * 12 + month - 1) < 0 ? 0 : (year * 12 + month);
        }
    }

    
    public static String dateToStamp(String s) throws ParseException {
        String res;
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = simpleDateFormat.parse(s);
        long ts = date.getTime();
        res = String.valueOf(ts);
        return res;
    }

    
    public static String stampToDate(String s) {
        String res;
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        long lt = new Long(s);
        Date date = new Date(lt);
        res = simpleDateFormat.format(date);
        return res;
    }

    public static Date stampTo1Date(String s) {
        String res;
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        long lt = new Long(s);
        Date date = new Date(lt);
//        res = simpleDateFormat.format(date);
        return date;
    }

    
    public static int compareDate(Date now, Date validity) {
        if (validity != null) {
            try {
                if (now.getTime() > validity.getTime()) {
                    return 1;
                } else if (now.getTime() < validity.getTime()) {
                    return 2;
                } else {
                    return 0;
                }
            } catch (Exception exception) {
                exception.printStackTrace();
            }
        }
        return 0;
    }

    
    public static Date getTimesmorning() {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.MILLISECOND, 0);
        return cal.getTime();
    }

    
    public static Date getYesterdaymorning() {
        Calendar cal = Calendar.getInstance();
        cal.setTimeInMillis(getTimesmorning().getTime() - 3600 * 24 * 1000);
        return cal.getTime();
    }

    
    public static Date gettwoDaymorning() {
        Calendar cal = Calendar.getInstance();
        cal.setTimeInMillis(getTimesmorning().getTime() - 3600 * 24 * 1000 * 2);
        return cal.getTime();
    }

    
    public static Date getTriduumFromNow() {
        Calendar cal = Calendar.getInstance();
        cal.setTimeInMillis(getTimesmorning().getTime() - 3600 * 24 * 1000 * 3);
        return cal.getTime();
    }

    
    public static Date getWeekFromNow() {
        Calendar cal = Calendar.getInstance();
        cal.setTimeInMillis(getTimesmorning().getTime() + 3600 * 24 * 1000 * 7);
        return cal.getTime();
    }

    
    public static Date getsevenDaymorning() {
        Calendar cal = Calendar.getInstance();
        cal.setTimeInMillis(getTimesmorning().getTime() - 3600 * 24 * 1000 * 7);
        return cal.getTime();
    }

    
    public static Date getThirtyDay() {
        Calendar now = Calendar.getInstance();
        now.add(Calendar.DAY_OF_MONTH, +30);
        return now.getTime();
    }

    
    public static Date getNinetyDay() {
        Calendar now = Calendar.getInstance();
        now.add(Calendar.DAY_OF_MONTH, +90);
        return now.getTime();
    }

    
    public static Date getTimesnight() {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.HOUR_OF_DAY, 24);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.MILLISECOND, 0);
        return cal.getTime();
    }

    
    public static Date getTimesWeekmorning() {
        Calendar cal = Calendar.getInstance();
        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
        return cal.getTime();
    }

    
    public static Date getTimesWeeknight() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getTimesWeekmorning());
        cal.add(Calendar.DAY_OF_WEEK, 7);
        return cal.getTime();
    }

    
    public static Date getTimesMonthmorning() {
        Calendar cal = Calendar.getInstance();
        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        cal.set(Calendar.DAY_OF_MONTH, cal.getActualMinimum(Calendar.DAY_OF_MONTH));
        return cal.getTime();
    }

    
    public static Date getTimesMonthnight() {
        Calendar cal = Calendar.getInstance();
        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        cal.set(Calendar.DAY_OF_MONTH, cal.getActualMaximum(Calendar.DAY_OF_MONTH));
        cal.set(Calendar.HOUR_OF_DAY, 24);
        return cal.getTime();
    }

    
    public static Date getLastMonthStartMorning() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getTimesMonthmorning());
        cal.add(Calendar.MONTH, -1);
        return cal.getTime();
    }

    
    public static Date getCurrentQuarterStartTime() {
        Calendar c = Calendar.getInstance();
        int currentMonth = c.get(Calendar.MONTH) + 1;
        SimpleDateFormat longSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        SimpleDateFormat shortSdf = new SimpleDateFormat("yyyy-MM-dd");
        Date now = null;
        try {
            if (currentMonth >= 1 && currentMonth <= 3) {
                c.set(Calendar.MONTH, 0);
            } else if (currentMonth >= 4 && currentMonth <= 6) {
                c.set(Calendar.MONTH, 3);
            } else if (currentMonth >= 7 && currentMonth <= 9) {
                c.set(Calendar.MONTH, 4);
            } else if (currentMonth >= 10 && currentMonth <= 12) {
                c.set(Calendar.MONTH, 9);
            }
            c.set(Calendar.DATE, 1);
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    
    public static Date getCurrentQuarterEndTime() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getCurrentQuarterStartTime());
        cal.add(Calendar.MONTH, 3);
        return cal.getTime();
    }

    
    public static Date getCurrentYearStartTime() {
        Calendar cal = Calendar.getInstance();
        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        cal.set(Calendar.DAY_OF_MONTH, cal.getActualMinimum(Calendar.YEAR));
        return cal.getTime();
    }

    
    public static Date getCurrentYearEndTime() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getCurrentYearStartTime());
        cal.add(Calendar.YEAR, 1);
        return cal.getTime();
    }

    
    public static Date getLastYearStartTime() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getCurrentYearStartTime());
        cal.add(Calendar.YEAR, -1);
        return cal.getTime();
    }

    
    public static Integer monthCompare(String dateStr) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        Date nowDate = new Date();
        String nowDateStr = sdf.format(nowDate);

        LocalDate from = LocalDate.parse(dateStr);
        LocalDate to = LocalDate.parse(nowDateStr);
        Integer months = Math.toIntExact(ChronoUnit.MONTHS.between(from, to));
        System.out.println("months：" + months);
        return months;
    }

    
    public static Date getStartTime(String date) {
        Calendar time = Calendar.getInstance();
        time.add(Calendar.DATE, -1);
        time.set(Calendar.HOUR_OF_DAY, 22);
        time.set(Calendar.MINUTE, 0);
        time.set(Calendar.SECOND, 0);
        time.set(Calendar.MILLISECOND, 0);
        return time.getTime();
    }

    
    public static Date getEndTime(String date) {
        Calendar time = Calendar.getInstance();
        time.set(Calendar.HOUR_OF_DAY, 10);
        time.set(Calendar.MINUTE, 00);
        time.set(Calendar.SECOND, 00);
        time.set(Calendar.MILLISECOND, 999);
        return time.getTime();
    }

    
    public static Date getNextDayEndTime(String date) {
        Calendar time = Calendar.getInstance();
        time.add(Calendar.DATE, 1);
        time.set(Calendar.HOUR_OF_DAY, 22);
        time.set(Calendar.MINUTE, 00);
        time.set(Calendar.SECOND, 00);
        time.set(Calendar.MILLISECOND, 999);
        return time.getTime();
    }

    
    public static String convertMillis(long time) {
        SimpleDateFormat sdf = new SimpleDateFormat("H'时':m'分':s'秒'");

        sdf.setTimeZone(TimeZone.getTimeZone("UTC"));

        System.out.println(sdf.format(new Date(time)));
        return sdf.format(new Date(time));
    }

用的时间处理的方法。