TimeUtil

package com.osdiot.gas.device.commons.utils;

import org.nutz.lang.Strings;
import org.nutz.lang.Times;
import org.nutz.lang.util.NutMap;

import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.*;

public class TimeUtil {

    public static final DateTimeFormatter DTF_DATE=DateTimeFormatter.ofPattern("yyyy-MM-dd");
    public static final DateTimeFormatter DTF_MONTH=DateTimeFormatter.ofPattern("yyyy-MM");

    public static final DateTimeFormatter DTF_YYYYMM=DateTimeFormatter.ofPattern("yyyyMM");
    public static final DateTimeFormatter YYYYMM = DateTimeFormatter.ofPattern("yyyyMM");
    public static final DateTimeFormatter YYYY_MM_DD = DateTimeFormatter.ofPattern("yyyy-MM-dd");

    public static final DateTimeFormatter MM = DateTimeFormatter.ofPattern("MM");

    //============================借助Calendar类获取今天、昨天、本周、上周、本年及特定时间的开始时间和结束时间（返回类型为date类型）========================

    /**
     * 获取当天开始时间
     *
     * @return
     */
    public static Date getDayBegin() {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.HOUR_OF_DAY, 0);//0点
        cal.set(Calendar.MINUTE, 0);//0分
        cal.set(Calendar.SECOND, 0);//0秒
        cal.set(Calendar.MILLISECOND, 0);//0毫秒
        return cal.getTime();
    }

    /**
     * 获取某天开始时间
     *
     * @return
     */
    public static Date getBeginDay(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        cal.set(Calendar.HOUR_OF_DAY, 0);//0点
        cal.set(Calendar.MINUTE, 0);//0分
        cal.set(Calendar.SECOND, 0);//0秒
        cal.set(Calendar.MILLISECOND, 0);//0毫秒
        return cal.getTime();
    }

    /**
     * 获取当天结束时间
     *
     * @return
     */
    public static Date getDayEnd() {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.HOUR_OF_DAY, 23);//23点
        cal.set(Calendar.MINUTE, 59);//59分
        cal.set(Calendar.SECOND, 59);//59秒
        return cal.getTime();
    }

    /**
     * 获取某天结束时间
     *
     * @return
     */
    public static Date getEndDay(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        cal.set(Calendar.HOUR_OF_DAY, 23);//23点
        cal.set(Calendar.MINUTE, 59);//59分
        cal.set(Calendar.SECOND, 59);//59秒
        return cal.getTime();
    }

    /**
     * 获取昨日字符串
     *
     * @return
     */
    public static String getYesterdayStr() {
        Calendar cal = Calendar.getInstance();
        cal.add(Calendar.DAY_OF_MONTH, -1);//当天月份天数减1
        return new SimpleDateFormat("yyyy-MM-dd").format(cal.getTime());
    }

    /**
     * 获取上月时间字符串
     *
     * @return
     */
    public static String getYestermonthStr() {
        Calendar cal = Calendar.getInstance();
        cal.add(cal.get(Calendar.MONTH), -1);//当天月份天数减1
        return new SimpleDateFormat("yyyy-MM").format(cal.getTime());
    }

    /**
     * 获取昨天开始时间
     *
     * @return
     */
    public static Date getBeginDayOfYesterday() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getDayBegin());//当天开始时间
        cal.add(Calendar.DAY_OF_MONTH, -1);//当天月份天数减1
        return cal.getTime();
    }


    /**
     * 获取昨天结束时间
     *
     * @return
     */
    public static Date getEndDayOfYesterday() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getDayEnd());//当天结束时间
        cal.add(Calendar.DAY_OF_MONTH, -1);//当天月份天数减1
        return cal.getTime();
    }


    /**
     * 获取明天开始时间
     *
     * @return
     */
    public static Date getBeginDayOfTomorrow() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getDayBegin());//当天开始时间
        cal.add(Calendar.DAY_OF_MONTH, 1);//当天月份天数加1
        return cal.getTime();
    }


    /**
     * 获取明天结束时间
     *
     * @return
     */
    public static Date getEndDayOfTomorrow() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getDayEnd());//当天结束时间
        cal.add(Calendar.DAY_OF_MONTH, 1);//当天月份天数加1
        return cal.getTime();
    }


    /**
     * 获取某个日期的开始时间
     *
     * @param d
     * @return
     */
    public static Timestamp getDayStartTime(Date d) {
        Calendar calendar = Calendar.getInstance();
        if (null != d) {
            calendar.setTime(d);
        }
        calendar.set(calendar.get(Calendar.YEAR),
                calendar.get(Calendar.MONTH),
                calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        calendar.set(Calendar.MILLISECOND, 0);
        return new Timestamp(calendar.getTimeInMillis());
    }


    /**
     * 获取某个日期的结束时间
     *
     * @param d
     * @return
     */
    public static Timestamp getDayEndTime(Date d) {
        Calendar calendar = Calendar.getInstance();
        if (null != d) {
            calendar.setTime(d);
        }
        calendar.set(calendar.get(Calendar.YEAR),
                calendar.get(Calendar.MONTH),
                calendar.get(Calendar.DAY_OF_MONTH), 23, 59, 59);
        calendar.set(Calendar.MILLISECOND, 999);
        return new Timestamp(calendar.getTimeInMillis());
    }


    /**
     * 获取某个日期的月开始时间
     *
     * @param d
     * @return
     */
    public static Timestamp getMonthStartTime(Date d) {
        Calendar calendar = Calendar.getInstance();
        if (null != d) {
            calendar.setTime(d);
        }
        calendar.set(calendar.get(Calendar.YEAR),
                calendar.get(Calendar.MONTH),
                1, 0, 0, 0);
        calendar.set(Calendar.MILLISECOND, 0);
        return new Timestamp(calendar.getTimeInMillis());
    }

    /**
     * 获取某个日期的月的 结束时间
     *
     * @param d
     * @return
     */
    public static Timestamp getMonthEndTime(Date d) {
        Calendar calendar = Calendar.getInstance();
        if (null != d) {
            calendar.setTime(d);
        }
        calendar.set(calendar.get(Calendar.YEAR),
                calendar.get(Calendar.MONTH),
                calendar.getActualMaximum(Calendar.DAY_OF_MONTH), 23, 59, 59);
        calendar.set(Calendar.MILLISECOND, 999);
        return new Timestamp(calendar.getTimeInMillis());
    }


    /**
     * 获取本周的开始时间
     *
     * @return
     */
    @SuppressWarnings("unused")
    public static Date getBeginDayOfWeek() {
        Date date = new Date();
        if (date == null) {
            return null;
        }
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
        if (dayOfWeek == 1) {
            dayOfWeek += 7;
        }
        cal.add(Calendar.DATE, 2 - dayOfWeek);
        return getDayStartTime(cal.getTime());
    }


    /**
     * 获取本周的结束时间
     *
     * @return
     */
    public static Date getEndDayOfWeek() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getBeginDayOfWeek());
        cal.add(Calendar.DAY_OF_WEEK, 6);
        Date weekEndSta = cal.getTime();
        return getDayEndTime(weekEndSta);
    }


    /**
     * 获取上周开始时间
     */
    @SuppressWarnings("unused")
    public static Date getBeginDayOfLastWeek() {
        Date date = new Date();
        if (date == null) {
            return null;
        }
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        int dayofweek = cal.get(Calendar.DAY_OF_WEEK);
        if (dayofweek == 1) {
            dayofweek += 7;
        }
        cal.add(Calendar.DATE, 2 - dayofweek - 7);
        return getDayStartTime(cal.getTime());
    }


    /**
     * 获取上周的结束时间
     *
     * @return
     */
    public static Date getEndDayOfLastWeek() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getBeginDayOfLastWeek());
        cal.add(Calendar.DAY_OF_WEEK, 6);
        Date weekEndSta = cal.getTime();
        return getDayEndTime(weekEndSta);
    }


    /**
     * 获取今年是哪一年
     *
     * @return
     */
    public static Integer getNowYear() {
        Date date = new Date();
        GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
        gc.setTime(date);
        return Integer.valueOf(gc.get(1));
    }


    /**
     * 获取本月是哪一月
     *
     * @return
     */
    public static int getNowMonth() {
        Date date = new Date();
        GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
        gc.setTime(date);
        return gc.get(2) + 1;
    }


    /**
     * 获取本月的开始时间
     *
     * @return
     */
    public static Date getBeginDayOfMonth() {
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.DATE, 1);
        return getDayStartTime(calendar.getTime());
    }


    /**
     * 获取本月的结束时间
     *
     * @return
     */
    public static Date getEndDayOfMonth() {
        Calendar calendar = Calendar.getInstance();
        calendar.set(getNowYear(), getNowMonth() - 1, 1);
        int day = calendar.getActualMaximum(5);
        calendar.set(getNowYear(), getNowMonth() - 1, day);
        return getDayEndTime(calendar.getTime());
    }


    /**
     * 获取上月的开始时间
     *
     * @return
     */
    public static Date getBeginDayOfLastMonth() {
        Calendar calendar = Calendar.getInstance();
        calendar.set(getNowYear(), getNowMonth() - 2, 1);
        return getDayStartTime(calendar.getTime());
    }


    /**
     * 获取上月的结束时间
     *
     * @return
     */
    public static Date getEndDayOfLastMonth() {
        Calendar calendar = Calendar.getInstance();
        calendar.set(getNowYear(), getNowMonth() - 2, 1);
        int day = calendar.getActualMaximum(5);
        calendar.set(getNowYear(), getNowMonth() - 2, day);
        return getDayEndTime(calendar.getTime());
    }


    /**
     * 获取本年的开始时间
     *
     * @return
     */
    public static Date getBeginDayOfYear() {
        Calendar cal = Calendar.getInstance();
        //cal.set(Calendar.YEAR, getNowYear());
        cal.set(Calendar.MONTH, Calendar.JANUARY);
        cal.set(Calendar.DATE, 1);
        return getDayStartTime(cal.getTime());
    }


    /**
     * 获取本年的结束时间
     *
     * @return
     */
    public static Date getEndDayOfYear() {
        Calendar cal = Calendar.getInstance();
        //cal.set(Calendar.YEAR, getNowYear());
        cal.set(Calendar.MONTH, Calendar.DECEMBER);
        cal.set(Calendar.DATE, 31);
        return getDayEndTime(cal.getTime());
    }

    /**
     * 获取指定年的开始时间
     *
     * @return
     */
    public static Date getBeginDayOfYear(Integer year) {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, year);
        cal.set(Calendar.MONTH, Calendar.JANUARY);
        cal.set(Calendar.DATE, 1);
        return getDayStartTime(cal.getTime());
    }


    /**
     * 获取指定年的结束时间
     *
     * @return
     */
    public static Date getEndDayOfYear(Integer year) {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, year);
        cal.set(Calendar.MONTH, Calendar.DECEMBER);
        cal.set(Calendar.DATE, 31);
        return getDayEndTime(cal.getTime());
    }

    /**
     * 两个日期相减得到的天数
     *
     * @param beginDate
     * @param endDate
     * @return
     */
    public static int getDiffDays(Date beginDate, Date endDate) {
        if (beginDate == null || endDate == null) {
            throw new IllegalArgumentException("getDiffDays param is null!");
        }
        long diff = (endDate.getTime() - beginDate.getTime()) / (1000 * 60 * 60 * 24);
        int days = new Long(diff).intValue();
        return days;
    }

    /**
     * 计算两个日期相差月数，如果 date2>date1返回正数，否则返回负数
     *
     * @param date1
     * @param date2
     * @return
     */
    public static int monthDiff(Date date1, Date date2) {
        Calendar c1 = Calendar.getInstance();
        c1.setTime(date1);
        Calendar c2 = Calendar.getInstance();
        c2.setTime(date2);
        int yearDiff = c2.get(Calendar.YEAR) - c1.get(Calendar.YEAR);
        int monthDiff = c2.get(Calendar.MONTH) - c1.get(Calendar.MONTH);
        return yearDiff * 12 + monthDiff;
    }


    /**
     * 获取两个日期中的最大日起
     *
     * @param beginDate
     * @param endDate
     * @return
     */
    public static Date max(Date beginDate, Date endDate) {
        if (beginDate == null) {
            return endDate;
        }
        if (endDate == null) {
            return beginDate;
        }
        if (beginDate.after(endDate)) {//beginDate日期大于endDate
            return beginDate;
        }
        return endDate;
    }


    /**
     * 获取两个日期中的最小日期
     *
     * @param beginDate
     * @param endDate
     * @return
     */
    public static Date min(Date beginDate, Date endDate) {
        if (beginDate == null) {
            return endDate;
        }
        if (endDate == null) {
            return beginDate;
        }
        if (beginDate.after(endDate)) {
            return endDate;
        }
        return beginDate;
    }


    /**
     * 获取某月该季度的第一个月
     *
     * @param date
     * @return
     */
    public static Date getFirstSeasonDate(Date date) {
        final int[] SEASON = {1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4};
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        int sean = SEASON[cal.get(Calendar.MONTH)];
        cal.set(Calendar.MONTH, sean * 3 - 3);
        return cal.getTime();
    }


    /**
     * 返回某个日期下几天的日期
     *
     * @param date
     * @param i
     * @return
     */
    public static Date getNextDay(Date date, int i) {
        Calendar cal = new GregorianCalendar();
        cal.setTime(date);
        cal.set(Calendar.DATE, cal.get(Calendar.DATE) + i);
        return cal.getTime();
    }


    /**
     * 返回某个日期前几天的日期
     *
     * @param date
     * @param i
     * @return
     */
    public static Date getFrontDay(Date date, int i) {
        Calendar cal = new GregorianCalendar();
        cal.setTime(date);
        cal.set(Calendar.DATE, cal.get(Calendar.DATE) - i);
        return cal.getTime();
    }


    /**
     * 获取某年某月按天切片日期集合（某个月间隔多少天的日期集合）
     *
     * @param beginYear
     * @param beginMonth
     * @param k
     * @return
     */
    @SuppressWarnings({"unchecked", "rawtypes"})
    public static List getTimeList(int beginYear, int beginMonth, int k) {
        List list = new ArrayList();
        Calendar begincal = new GregorianCalendar(beginYear, beginMonth, 1);
        int max = begincal.getActualMaximum(Calendar.DATE);
        for (int i = 1; i < max; i = i + k) {
            list.add(begincal.getTime());
            begincal.add(Calendar.DATE, k);
        }
        begincal = new GregorianCalendar(beginYear, beginMonth, max);
        list.add(begincal.getTime());
        return list;
    }


    /**
     * 获取某年某月到某年某月按天的切片日期集合（间隔天数的集合）
     *
     * @param beginYear
     * @param beginMonth
     * @param endYear
     * @param endMonth
     * @param k
     * @return
     */
    @SuppressWarnings({"rawtypes", "unchecked"})
    public static List getTimeList(int beginYear, int beginMonth, int endYear, int endMonth, int k) {
        List list = new ArrayList();
        if (beginYear == endYear) {
            for (int j = beginMonth; j <= endMonth; j++) {
                list.add(getTimeList(beginYear, j, k));
            }
        } else {
            {
                for (int j = beginMonth; j < 12; j++) {
                    list.add(getTimeList(beginYear, j, k));
                }
                for (int i = beginYear + 1; i < endYear; i++) {
                    for (int j = 0; j < 12; j++) {
                        list.add(getTimeList(i, j, k));
                    }
                }
                for (int j = 0; j <= endMonth; j++) {
                    list.add(getTimeList(endYear, j, k));
                }
            }
        }
        return list;
    }

    /***
     * 获取两个日期间的日期集合
     * @param startTime
     * @param endTime
     * @param type
     * @return
     */
    public static List getDateList(Date startTime, Date endTime, String type) {
        List<String> dates = new ArrayList<String>();
        Calendar startCalendar = Calendar.getInstance();
        Calendar endCalendar = Calendar.getInstance();
        startCalendar.setTime(startTime);
        endCalendar.setTime(endTime);
        while (true) {
            if ("day".equals(type)) {
                startCalendar.add(Calendar.DATE, 1);
            } else if ("month".equals(type)) {
                startCalendar.add(Calendar.MONTH, 1);
            } else {
                return null;
            }
            if (startCalendar.getTimeInMillis() <= endCalendar.getTimeInMillis()) {
                if ("day".equals(type)) {
                    dates.add(new SimpleDateFormat("yyyy-MM-dd").format(startCalendar.getTime()));
                } else if ("month".equals(type)) {
                    dates.add(new SimpleDateFormat("yyyy-MM").format(startCalendar.getTime()));
                }
            } else {
                break;
            }
        }
        return dates;
    }


    //=================================时间格式转换==========================

    /**
     * date类型进行格式化输出（返回类型：String）
     *
     * @param date
     * @return
     */
    public static String dateFormat(Date date) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String dateString = formatter.format(date);
        return dateString;
    }

    /**
     * date类型进行格式化输出（返回类型：String）
     *
     * @param date
     * @return
     */
    public static String dateFormatYM(Date date) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM");
        String dateString = formatter.format(date);
        return dateString;
    }

    /**
     * date类型进行格式化输出（返回类型：String）
     *
     * @param date
     * @return
     */
    public static String dateFormatYMD(Date date) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        String dateString = formatter.format(date);
        return dateString;
    }

    /**
     * 将"2015-08-31 21:08:06"型字符串转化为Date
     *
     * @param str
     * @return
     * @throws ParseException
     */
    public static Date StringToDate(String str) throws ParseException {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = (Date) formatter.parse(str);
        return date;
    }


    /**
     * 将CST时间类型字符串进行格式化输出
     *
     * @param str
     * @return
     * @throws ParseException
     */
    public static String CSTFormat(String str) throws ParseException {
        SimpleDateFormat formatter = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", Locale.US);
        Date date = (Date) formatter.parse(str);
        return dateFormat(date);
    }


    /**
     * 将long类型转化为Date
     *
     * @param str
     * @return
     * @throws ParseException
     */
    public static Date LongToDare(long str) throws ParseException {
        return new Date(str * 1000);
    }


    //====================================其他常见日期操作方法======================

    /**
     * 判断当前日期是否在[startDate, endDate]区间
     *
     * @param startDate 开始日期
     * @param endDate   结束日期
     * @return
     * @author jqlin
     */
    public static boolean isEffectiveDate(Date startDate, Date endDate) {
        if (startDate == null || endDate == null) {
            return false;
        }
        long currentTime = new Date().getTime();
        if (currentTime >= startDate.getTime()
                && currentTime <= endDate.getTime()) {
            return true;
        }
        return false;
    }


    /**
     * 得到二个日期间的间隔天数
     *
     * @param secondString：后一个日期
     * @param firstString：前一个日期
     * @return
     */
    public static String getTwoDay(String secondString, String firstString) {
        SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
        long day = 0;
        try {
            Date secondTime = myFormatter.parse(secondString);
            Date firstTime = myFormatter.parse(firstString);
            day = (secondTime.getTime() - firstTime.getTime()) / (24 * 60 * 60 * 1000);
        } catch (Exception e) {
            return "";
        }
        return day + "";
    }

    /**
     * 获取二个日期间的间隔月数
     *
     * @param secondString：后一个日期
     * @param firstString：前一个日期
     * @return
     */
    public static int getTwoMonth(Date secondString, Date firstString) {
        Calendar c1 = Calendar.getInstance();
        Calendar c2 = Calendar.getInstance();
        c1.setTime(secondString);
        c2.setTime(firstString);
        int year1 = c1.get(Calendar.YEAR);
        int year2 = c2.get(Calendar.YEAR);
        int month1 = c1.get(Calendar.MONTH);
        int month2 = c2.get(Calendar.MONTH);
        int day1 = c1.get(Calendar.DAY_OF_MONTH);
        int day2 = c2.get(Calendar.DAY_OF_MONTH);
        // 获取年的差值
        int yearInterval = year1 - year2;
        // 如果 d1的 月-日 小于 d2的 月-日 那么 yearInterval-- 这样就得到了相差的年数
        if (month1 < month2 || month1 == month2 && day1 < day2) {
            yearInterval--;
        }
        // 获取月数差值
        int monthInterval = (month1 + 12) - month2;
        if (day1 < day2) {
            monthInterval--;
        }
        monthInterval %= 12;
        int monthsDiff = Math.abs(yearInterval * 12 + monthInterval);
        return monthsDiff;
    }

    /**
     * 时间前推或后推分钟,其中JJ表示分钟.
     *
     * @param StringTime：时间
     * @param minute：分钟（有正负之分）
     * @return
     */
    public static String getPreTime(String StringTime, String minute) {
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String mydate1 = "";
        try {
            Date date1 = format.parse(StringTime);
            long Time = (date1.getTime() / 1000) + Integer.parseInt(minute) * 60;
            date1.setTime(Time * 1000);
            mydate1 = format.format(date1);
        } catch (Exception e) {
            return "";
        }
        return mydate1;
    }


    /**
     * 将短时间格式字符串转换为时间 yyyy-MM-dd
     *
     * @param strDate
     * @return
     */
    public static Date strToDate(String strDate) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        ParsePosition pos = new ParsePosition(0);
        Date strtodate = formatter.parse(strDate, pos);
        return strtodate;
    }
    public static Date stringToDate(String strDate) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy/MM/dd");
        ParsePosition pos = new ParsePosition(0);
        Date strtodate = formatter.parse(strDate, pos);
        return strtodate;
    }
    public static Date strToDate(String strDate,String format) {
        SimpleDateFormat formatter = new SimpleDateFormat(format);
        ParsePosition pos = new ParsePosition(0);
        Date strtodate = formatter.parse(strDate, pos);
        return strtodate;
    }

    /**
     * 得到一个时间延后或前移几天的时间
     *
     * @param nowdate：时间
     * @param delay：前移或后延的天数
     * @return
     */
    public static String getNextDay(String nowdate, String delay) {
        try {
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
            String mdate = "";
            Date d = strToDate(nowdate);
            long myTime = (d.getTime() / 1000) + Integer.parseInt(delay) * 24 * 60 * 60;
            d.setTime(myTime * 1000);
            mdate = format.format(d);
            return mdate;
        } catch (Exception e) {
            return "";
        }
    }


    /**
     * 判断是否闰年
     *
     * @param ddate
     * @return
     */
    public static boolean isLeapYear(String ddate) {
        /**
         * 详细设计： 1.被400整除是闰年，否则： 2.不能被4整除则不是闰年 3.能被4整除同时不能被100整除则是闰年
         * 3.能被4整除同时能被100整除则不是闰年
         */
        Date d = strToDate(ddate);
        GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
        gc.setTime(d);
        int year = gc.get(Calendar.YEAR);
        if ((year % 400) == 0) {
            return true;
        } else if ((year % 4) == 0) {
            if ((year % 100) == 0) {
                return false;
            } else {
                return true;
            }
        } else {
            return false;
        }
    }


    /**
     * 返回美国时间格式
     *
     * @param str
     * @return
     */
    public static String getEDate(String str) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        ParsePosition pos = new ParsePosition(0);
        Date strtodate = formatter.parse(str, pos);
        String j = strtodate.toString();
        String[] k = j.split(" ");
        return k[2] + k[1].toUpperCase() + k[5].substring(2, 4);
    }


    /**
     * 判断二个时间是否在同一个周
     *
     * @param date1
     * @param date2
     * @return
     */
    public static boolean isSameWeekDates(Date date1, Date date2) {
        Calendar cal1 = Calendar.getInstance();
        Calendar cal2 = Calendar.getInstance();
        cal1.setTime(date1);
        cal2.setTime(date2);
        int subYear = cal1.get(Calendar.YEAR) - cal2.get(Calendar.YEAR);
        if (0 == subYear) {
            if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)) {
                return true;
            }
        } else if (1 == subYear && 11 == cal2.get(Calendar.MONTH)) {
            // 如果12月的最后一周横跨来年第一周的话则最后一周即算做来年的第一周
            if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)) {
                return true;
            }
        } else if (-1 == subYear && 11 == cal1.get(Calendar.MONTH)) {
            if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)) {
                return true;
            }
        }
        return false;
    }


    /**
     * 产生周序列,即得到当前时间所在的年度是第几周
     *
     * @return
     */
    public static String getSeqWeek() {
        Calendar c = Calendar.getInstance(Locale.CHINA);
        String week = Integer.toString(c.get(Calendar.WEEK_OF_YEAR));
        if (week.length() == 1)
            week = "0" + week;
        String year = Integer.toString(c.get(Calendar.YEAR));
        return year + "年第" + week + "周";
    }


    /**
     * 获得一个日期所在的周的星期几的日期，如要找出2002年2月3日所在周的星期一是几号
     *
     * @param sdate：日期
     * @param num：星期几（星期天是一周的第一天）
     * @return
     */
    public static String getWeek(String sdate, String num) {
        // 再转换为时间
        Date dd = strToDate(sdate);
        Calendar c = Calendar.getInstance();
        c.setTime(dd);
        if (num.equals("1")) // 返回星期一所在的日期
            c.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
        else if (num.equals("2")) // 返回星期二所在的日期
            c.set(Calendar.DAY_OF_WEEK, Calendar.TUESDAY);
        else if (num.equals("3")) // 返回星期三所在的日期
            c.set(Calendar.DAY_OF_WEEK, Calendar.WEDNESDAY);
        else if (num.equals("4")) // 返回星期四所在的日期
            c.set(Calendar.DAY_OF_WEEK, Calendar.THURSDAY);
        else if (num.equals("5")) // 返回星期五所在的日期
            c.set(Calendar.DAY_OF_WEEK, Calendar.FRIDAY);
        else if (num.equals("6")) // 返回星期六所在的日期
            c.set(Calendar.DAY_OF_WEEK, Calendar.SATURDAY);
        else if (num.equals("0")) // 返回星期日所在的日期
            c.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
        return new SimpleDateFormat("yyyy-MM-dd").format(c.getTime());
    }


    /**
     * 根据一个日期，返回是星期几的字符串
     *
     * @param sdate
     * @return
     */
    public static String getWeek(String sdate) {
        // 再转换为时间
        Date date = strToDate(sdate);
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        // int hour=c.get(Calendar.DAY_OF_WEEK);
        // hour中存的就是星期几了，其范围 1~7
        // 1=星期日 7=星期六，其他类推
        return new SimpleDateFormat("EEEE").format(c.getTime());
    }


    /**
     * 根据一个日期，返回是星期几的字符串
     *
     * @param sdate
     * @return
     */
    public static String getWeekStr(String sdate) {
        String str = "";
        str = getWeek(sdate);
        if ("1".equals(str)) {
            str = "星期日";
        } else if ("2".equals(str)) {
            str = "星期一";
        } else if ("3".equals(str)) {
            str = "星期二";
        } else if ("4".equals(str)) {
            str = "星期三";
        } else if ("5".equals(str)) {
            str = "星期四";
        } else if ("6".equals(str)) {
            str = "星期五";
        } else if ("7".equals(str)) {
            str = "星期六";
        }
        return str;
    }


    /**
     * 两个时间之间的天数
     *
     * @param date1
     * @param date2
     * @return
     */
    public static long getDays(String date1, String date2) {
        if (date1 == null || date1.equals(""))
            return 0;
        if (date2 == null || date2.equals(""))
            return 0;
        // 转换为标准时间
        SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
        Date date = null;
        Date mydate = null;
        try {
            date = myFormatter.parse(date1);
            mydate = myFormatter.parse(date2);
        } catch (Exception e) {
        }
        long day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);
        return day;
    }


    /**
     * 形成如下的日历 ， 根据传入的一个时间返回一个结构 星期日 星期一 星期二 星期三 星期四 星期五 星期六 下面是当月的各个时间
     * 此函数返回该日历第一行星期日所在的日期
     *
     * @param sdate
     * @return
     */
    public static String getNowMonth(String sdate) {
        // 取该时间所在月的一号
        sdate = sdate.substring(0, 8) + "01";

        // 得到这个月的1号是星期几
        Date date = strToDate(sdate);
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        int u = c.get(Calendar.DAY_OF_WEEK);
        String newday = getNextDay(sdate, (1 - u) + "");
        return newday;
    }


    /**
     * 根据用户传入的时间表示格式，返回当前时间的格式 如果是yyyyMMdd，注意字母y不能大写
     *
     * @param sformat
     * @return
     */
    public static String getUserDate(String sformat) {
        Date currentTime = new Date();
        SimpleDateFormat formatter = new SimpleDateFormat(sformat);
        String dateString = formatter.format(currentTime);
        return dateString;
    }


    /**
     * 返回一个i位数的随机数
     *
     * @param i
     * @return
     */
    public static String getRandom(int i) {
        Random jjj = new Random();
        // int suiJiShu = jjj.nextInt(9);
        if (i == 0)
            return "";
        String jj = "";
        for (int k = 0; k < i; k++) {
            jj = jj + jjj.nextInt(9);
        }
        return jj;
    }


    /**
     * 取得数据库主键 生成格式为yyyymmddhhmmss+k位随机数
     *
     * @param k：表示是取几位随机数，可以自己定
     * @return
     */
    public static String getNo(int k) {
        return getUserDate("yyyyMMddhhmmss") + getRandom(k);
    }


    /**
     * 安全解析
     *
     * @param fmt 格式
     * @param str 日期字符串
     * @param df  默认值
     * @return
     */
    public static Date safeParse(String fmt, String str, Date df) {
        try {
            if (Strings.isBlank(str) || Strings.isBlank(fmt)) {
                return df;
            }
            return Times.parse(fmt, str);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return df;
    }

    /**
     * 安全格式化
     *
     * @param fmt
     * @param millisecond 毫秒数
     * @param df
     * @return
     */
    public static String safeFormat(String fmt, long millisecond, String df) {
        if (millisecond < 0 || Strings.isBlank(fmt)) {
            return df;
        }
        Date date = new Date(millisecond);
        try {
            return Times.format(fmt, date);
        } catch (Exception e) {

        }
        return df;
    }

    /**
     * 根据时间获取对应的Map，key
     *
     * @param startTime
     * @param endTime
     * @param timeType
     * @return
     */
    public static NutMap getTimeMap(Long startTime, Long endTime, int timeType) {
        NutMap re = NutMap.NEW();
        String timeFmt;
        switch (timeType) {
            case Calendar.YEAR:
                timeFmt = "yyyy";
                break;
            case Calendar.MONTH:
                timeFmt = "yyyy-MM";
                break;
            case Calendar.DATE:
                timeFmt = "yyyy-MM-dd";
                break;
            default:
                return re;
        }
        Calendar start = Calendar.getInstance();
        start.setTimeInMillis(startTime);
        Calendar end = Calendar.getInstance();
        end.setTimeInMillis(endTime);
        while (start.before(end)) {
            re.put(Times.format(timeFmt, start.getTime()), 0);
            start.add(timeType, 1);
        }
        return re;
    }

    public static Long getTime(int timeType, boolean isStart) {

        switch (timeType) {
            case Calendar.YEAR:
                return isStart ? TimeUtil.getBeginDayOfYear(2020).getTime() : System.currentTimeMillis();
            case Calendar.MONTH:
                return (isStart ? TimeUtil.getBeginDayOfYear() : TimeUtil.getEndDayOfYear()).getTime();
            case Calendar.DATE:
                return (isStart ? TimeUtil.getBeginDayOfMonth() : TimeUtil.getEndDayOfMonth()).getTime();
            default:
                return System.currentTimeMillis();
        }
    }

    /**
     * 将日期时间字符串从 yyyyMMddHHmmss、yyMMddHHmmss 转换为 yyyy-MM-dd HH:mm:ss 的格式
     *
     * @param timeStr yyyyMMddHHmmss、yyMMddHHmmss 格式的日期时间字符串
     * @return
     */
    public static String convertToStd(String timeStr) {
        if (Strings.isBlank(timeStr)) {
            return null;
        }
        if (timeStr.contains("T") || timeStr.contains("Z")) {
            timeStr = timeStr.replaceAll("T|Z", "");
        }
        if (timeStr.length() == 12) {
            int year = LocalDate.now().getYear() / 100;
            timeStr = year + timeStr;
        }
        // yyyyMMddHHmmss 的格式的
        if (timeStr.length() == 14) {
            return String.format("%s-%s-%s %s:%s:%s"
                    , timeStr.substring(0, 4), timeStr.substring(4, 6), timeStr.substring(6, 8)
                    , timeStr.substring(8, 10), timeStr.substring(10, 12), timeStr.substring(12, 14)
            );
        }
        // yyMMddHHmmss
        else {
            return timeStr;
        }
    }

    /**
     * 将yyyy-MM-dd改为yyMMdd
     *
     * @param dateStr
     * @return
     */
    public static String changeFormat(String dateStr) {
        dateStr = dateStr.replaceAll("-", "");
        dateStr = dateStr.replaceAll(":", "");
        dateStr = dateStr.replaceAll(" ", "");
        return dateStr;
    }

    /**
     * 判断某一日是否为当月最后一天
     *
     * @param date 日期
     * @return
     */
    public static boolean isLastDayOfMonth(Date date) {
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        return c.get(Calendar.DAY_OF_MONTH) == c.getActualMaximum(Calendar.DAY_OF_MONTH);
    }

    /**
     * 指定日期格式的日期转为时间戳
     *
     * @param date
     * @param dateFormat
     * @return
     */
    public static Long formatDate2Long(String date, String dateFormat) {
        try {
            SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);
            return sdf.parse(date).getTime();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return 0l;
    }

    /**
     * 取得去年第一天0点00分的毫秒值
     */
    public static long getLastYearStartDay() {
        Calendar ca = Calendar.getInstance();
        ca.setTime(new Date());
        ca.add(Calendar.YEAR, -1);
        ca.set(Calendar.MONTH, 0);
        ca.set(Calendar.DAY_OF_MONTH, 1);
        ca.set(Calendar.HOUR_OF_DAY, 0);
        ca.set(Calendar.MINUTE, 0);
        ca.set(Calendar.SECOND, 0);
        return ca.getTimeInMillis();
    }

    /**
     * 取得去年最后一天12点59分的毫秒值
     */
    public static long getLastYearEndDay() {
        Calendar calendar = Calendar.getInstance();// 获取当前日期
        calendar.add(Calendar.YEAR, 0);
        calendar.add(Calendar.DATE, 0);
        calendar.add(Calendar.MONTH, 0);
        calendar.set(Calendar.DAY_OF_YEAR, 1);
        calendar.set(Calendar.HOUR, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        Long time = calendar.getTimeInMillis() - 1;
        return time;
    }

    /**
     * 取得今年第一天0点00分的时间戳
     */
    public static long getNowYearStartDay() {
        Calendar calendar = Calendar.getInstance();// 获取当前日期
        calendar.add(Calendar.YEAR, 0);
        calendar.add(Calendar.DATE, 0);
        calendar.add(Calendar.MONTH, 0);
        calendar.set(Calendar.DAY_OF_YEAR, 1);
        calendar.set(Calendar.HOUR, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        Long time = calendar.getTimeInMillis();
        return time;
    }

    public static long dateTime2Timestamp(LocalDateTime dateTime) {

        ZoneId zone = ZoneId.systemDefault();
        Instant instant = dateTime.atZone(zone).toInstant();
        return instant.toEpochMilli();
    }


}