package com.hx.util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

public class DateUtil {

    private static SimpleDateFormat Format_1 = new SimpleDateFormat("yyyyMMdd");
    private static SimpleDateFormat Format_2 = new SimpleDateFormat("yyyyMMddHHmmss");
    private static SimpleDateFormat Format_3 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    private static SimpleDateFormat Format_4 = new SimpleDateFormat("yyyy-MM-dd");
    private static SimpleDateFormat Format_5 = new SimpleDateFormat("HH:mm:ss");
    private static SimpleDateFormat Format_6 = new SimpleDateFormat("yyyyMM");
    private static SimpleDateFormat Format_7 = new SimpleDateFormat("MM月dd日 HH:mm");
    private static SimpleDateFormat Format_8 = new SimpleDateFormat("yyyy年MM月");
    private static SimpleDateFormat Format_9 = new SimpleDateFormat("MM-dd");
    private static SimpleDateFormat Format_10 = new SimpleDateFormat("yyyy年MM月dd日");
    private static SimpleDateFormat Format_11 = new SimpleDateFormat("yyyy年MM月dd日 HH:mm:ss");
    private static SimpleDateFormat Format_12 = new SimpleDateFormat("yyyyMMddHHmm");
    private static SimpleDateFormat Format_13 = new SimpleDateFormat("yyyy/MM/dd");
    private static SimpleDateFormat Format_14 = new SimpleDateFormat("yyyy-MM");
    private static SimpleDateFormat Format_15 = new SimpleDateFormat("yyyyMMddHHmmssSSS");
    private static SimpleDateFormat Format_16 = new SimpleDateFormat("yyyy/MM/dd HH:mm");
    private static SimpleDateFormat Format_17 = new SimpleDateFormat("HH:mm");

    /**时间格式转化iso8601
     * @param date 时间
     * @return 返回的时间格式字符串
     */
    public static String dateFormatISO8601(Date date) {
        if(!SimpleTool.checkNotNull(date)){
            return "";
        }
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX");//设置日期格式
        return df.format(date);
    }

    /**时间格式转化
     * @param date 时间
     * @param format 时间格式
     * @return 返回的时间格式字符串
     */
    public static String dateFormat(Date date, String format) {
        if(!SimpleTool.checkNotNull(date)){
            return "";
        }
        SimpleDateFormat df = new SimpleDateFormat(format);//设置日期格式
        return df.format(date);
    }

    /**时间戳转时间
     * @param timestamp 时间戳
     * @param format 时间格式
     * @return 返回的时间格式字符串
     */
    public static Date timestampToDate(long timestamp, String format) {
        SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String sd = sdf.format(new Date(timestamp));      // 时间戳转换成时间
        return DateUtil.parseString(sd,"yyyy-MM-dd HH:mm:ss");
    }

    /**
     * 转换成yyyyMMdd格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate(Date date) {
        return Format_1.format(date);
    }

    /**
     * 转换成yyyyMMddHHmmss格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_1(Date date) {
        return Format_2.format(date);
    }

    /**
     * 转换成yyyy-MM-dd HH:mm:ss格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_2(Date date) {
        return date == null ? null : Format_3.format(date);
    }

    /**
     * 转换成yyyy-MM-dd格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_3(Date date) {
        return date != null ? Format_4.format(date) : null;
    }

    /**
     * 转换成HH:mm:ss格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_4(Date date) {
        return Format_5.format(date);
    }

    /**
     * 转换成yyyyMM格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_5(Date date) {
        return Format_6.format(date);
    }

    /**
     * 转换成mm月dd日 HH:mm格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_6(Date date) {
        return Format_7.format(date);
    }

    /**
     * 转换成yyyy年mm月格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_7(Date date) {
        return Format_8.format(date);
    }

    /**
     * 转换成mm-dd格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_8(Date date) {
        return Format_9.format(date);
    }

    /**
     * 转换成yyyy年MM月dd日格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_9(Date date) {
        return Format_10.format(date);
    }

    /**
     * 转换成yyyyMMddHHmm格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_11(Date date) {
        return Format_12.format(date);
    }

    /**
     * 转换成yyyy年MM月dd日 HH:mm:ss格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_10(Date date) {
        return Format_11.format(date);
    }

    /**
     * 转换成yyyy/MM/dd 格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_13(Date date) {
        return Format_13.format(date);
    }

    /**
     * 转换成yyyy-MM 格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_14(Date date) {
        return Format_14.format(date);
    }


    /**
     * 当前时间之前的时间与当前时间相差多少秒
     * @param startDate 当前时间之前的时间
     * @return
     */
    public static int calLastedTime(Date startDate) {
        long nowDate = new Date().getTime();
        long startDateTime = startDate.getTime();
        int diffSeconds = (int) ((nowDate - startDateTime) / 1000);
        return diffSeconds;
    }


    /**
     * 转换成yyyyMMddHHmmssSSS格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_15(Date date) {
        return Format_15.format(date);
    }

    /**
     * 转换成yyyy/MM/dd HH:mm格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_16(Date date) {
        return Format_16.format(date);
    }

    /**
     * 转换成HH:mm格式的日期字符串
     *
     * @param date
     * @return
     */
    public static String formatDate_17(Date date) {
        return Format_17.format(date);
    }

    /**
     * 转换成字符串yyyyMMddHHmmss成日�?
     *
     * @param str
     * @return
     * @throws Exception
     */
    public static Date parseString(String str) {
        try {
            return Format_2.parse(str);
        }catch (Exception e)
        {
            return null;
        }
    }

    /**
     * 转换成字符串到指定的日期
     *
     * @param str
     * @param format
     * @return
     * @throws Exception
     */
    public static Date parseString(String str, String format) {
        SimpleDateFormat sdf = new SimpleDateFormat(format);
        try{
            return sdf.parse(str);
        }catch (Exception e)
        {
            return null;
        }
    }

    /**字符串转成时间yyyy-MM-dd HH:mm:ss*/
    public static Date parseString_1(String str)
    {
        try{
            return  Format_3.parse(str);
        }catch (Exception e)
        {
            return null;
        }
    }

    /**字符串转成时间yyyy-MM-dd*/
    public static Date parseString_2(String str)
    {
        try{
            return Format_4.parse(str);
        }catch (Exception e)
        {
            return null;
        }
    }

    /**时间上秒叠加
     * @Author: ChenJiaHe
     * @param dateTime 时间
     * @param second 秒
     * @return
     */
    public static Date addSecond(Date dateTime,int second){
        Calendar c = Calendar.getInstance();
        c.setTime(dateTime);
        c.add(Calendar.SECOND, second);
        return c.getTime();
    }

    /**时间上分钟叠加
     * @Author: ChenJiaHe
     * @param dateTime 时间
     * @param min 分钟
     * @return
     */
    public static Date addMin(Date dateTime,int min){
        Calendar c = Calendar.getInstance();
        c.setTime(dateTime);
        c.add(Calendar.MINUTE, min);
        return c.getTime();
    }

    /**时间上小时叠加
     * @Author: ChenJiaHe
     * @param dateTime 时间
     * @param hour 小时
     * @return
     */
    public static Date addhour(Date dateTime,int hour){
        Calendar c = Calendar.getInstance();
        c.setTime(dateTime);
        c.add(Calendar.HOUR, hour);
        return c.getTime();
    }

    /**时间上天数叠加
     * @Author: ChenJiaHe
     * @param dateTime 时间
     * @param dayNum 天数
     * @return
     */
    public static Date addDay(Date dateTime,int dayNum){
        Calendar c = Calendar.getInstance();
        c.setTime(dateTime);
        c.add(Calendar.DATE, dayNum);
        return c.getTime();
    }

    /**时间上月数叠加
     * @Author: ChenJiaHe
     * @param dateTime 时间
     * @param dayNum 天数
     * @return
     */
    public static Date addMonth(Date dateTime,int dayNum){
        Calendar c = Calendar.getInstance();
        c.setTime(dateTime);
        c.add(Calendar.MONTH, dayNum);
        return c.getTime();
    }

    /**时间上年数叠加
     * @Author: ChenJiaHe
     * @param dateTime 时间
     * @param dayNum 天数
     * @return
     */
    public static Date addYear(Date dateTime,int dayNum){
        Calendar c = Calendar.getInstance();
        c.setTime(dateTime);
        c.add(Calendar.YEAR, dayNum);
        return c.getTime();
    }

    /**
     * 转换成字符串到指定的日期
     *
     * @param date
     * @param format
     * @return
     * @throws Exception
     */
    public static String formatDate(Date date, String format) {
        if (date == null) {
            return null;
        }

        SimpleDateFormat sdf = new SimpleDateFormat(format, Locale.CHINA);
        return sdf.format(date);
    }

    /**日期转星期
     * @param dateTime 字符串时间
     * @param format 字符串时间格式
     * @param returnType 返回类型 0星期几1周几
     * @return 数据
     */
    public static String dateToWeek(String dateTime,String format,Integer returnType) throws ParseException {
        SimpleDateFormat f = new SimpleDateFormat(format);
        String[] weekDays = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
        if(SimpleTool.checkNotNull(returnType)&&returnType==1){
            weekDays  = new String[]{"周日", "周一", "周二", "周三", "周四", "周五", "周六"};
        }
        Calendar cal = Calendar.getInstance(); // 获得一个日历
        Date datet = null;
        datet = f.parse(dateTime);
        cal.setTime(datet);

        int w = cal.get(Calendar.DAY_OF_WEEK) - 1; // 指示一个星期中的某天。
        if (w < 0)
            w = 0;
        return weekDays[w];
    }

    /**日期转星期
     * @param dateTime 时间
     * @param returnType 返回类型 0星期几1周几
     * @return 数据
     */
    public static String dateToWeek(Date dateTime,Integer returnType) {
        String[] weekDays = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
        if(SimpleTool.checkNotNull(returnType)&&returnType==1){
            weekDays  = new String[]{"周日", "周一", "周二", "周三", "周四", "周五", "周六"};
        }
        Calendar cal = Calendar.getInstance(); // 获得一个日历
        cal.setTime(dateTime);

        int w = cal.get(Calendar.DAY_OF_WEEK) - 1; // 指示一个星期中的某天。
        if (w < 0)
            w = 0;
        return weekDays[w];
    }

    /**
     * 获取两个时间相差分钟数
     * @param startTime 开始时间
     * @param endTime 结束时间
     * @return 分钟
     */
    public static long differMinute(Date startTime, Date endTime) {
        long NTime = startTime.getTime();
        long OTime = endTime.getTime();
        return (NTime - OTime) / 1000 / 60;
    }

    /**
     * endTime比startTime多的天数
     * @param startTime 最小时间
     * @param endTime 最大时间
     * @return 返回
     */
    public static Integer differDay(Date startTime,Date endTime){
        Calendar cal1 = Calendar.getInstance();
        cal1.setTime(startTime);

        Calendar cal2 = Calendar.getInstance();
        cal2.setTime(endTime);
        int day1= cal1.get(Calendar.DAY_OF_YEAR);
        int day2 = cal2.get(Calendar.DAY_OF_YEAR);

        int year1 = cal1.get(Calendar.YEAR);
        int year2 = cal2.get(Calendar.YEAR);
        if(year1 != year2) { //同一年
            int timeDistance = 0 ;
            for(int i = year1 ; i < year2 ; i ++) {
                if(i%4==0 && i%100!=0 || i%400==0) {//闰年
                    timeDistance += 366;
                }
                else {//不是闰年
                    timeDistance += 365;
                }
            }

            return timeDistance + (day2-day1) ;
        }
        else { //不同年
            System.out.println("判断day2 - day1 : " + (day2-day1));
            return day2-day1;
        }
    }

    /**判断两个时间是不是同一天*/
    public static boolean timeEqual(Date startTime,Date endTime){
       if(startTime == null || endTime==null){
           return false;
       }
       boolean status = false;
       if(formatDate(startTime,"yyyyMMdd").equals(formatDate(endTime,"yyyyMMdd"))){
           status = true;
       }
       return status;
    }

    /**把秒转换成X天X时X分X秒*/
    public static String getChineseStr(Integer second) {
        int day = 24 * 60 * 60;
        int hour = 60 * 60;
        int min = 60;

        int dayNum = second / day;
        int hourNum = second % day / hour;
        int minNum = second % day % hour / min;
        second = second % day % hour % min;

        String str = dayNum > 0 ? dayNum + "天" : "";
        str += hourNum > 0 ? hourNum + "时" : "";
        str += minNum > 0 ? minNum + "分" : "";
        str += second + "秒";

        return str;
    }

    /**
     * 针对str格式的时间做转换 格式为"xx:xx"
     * @param time  传入的时间
     * @return  返回分钟如果10：25,则返回625
     */
    public static int getMinuteNum(String time){

        if(!StringUtils.isEmpty(time))
        {
            String[] arr = time.split(":");
            if(arr != null && arr.length == 2)
            {
                return Integer.parseInt(arr[0]) * 60 + Integer.parseInt(arr[1]);
            }
        }

        return 0;
    }

    /**
     * 获取当前月的开始时间
     * @param time 时间
     * @return 返回时间 格式yyyy-MM-dd 00:00:00
     */
    public static Date getMonthStart(Date time) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(time);
        calendar.set(Calendar.DAY_OF_MONTH, 1);
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND,0);
        return calendar.getTime();
    }

    /**
     * 获取当前月的开始时间
     *
     * @param num 0拿取当月，正代表后，负代表前，值为几个（月）
     * @return 返回时间 格式yyyy-MM-dd 00:00:00
     */
    public static String getMonthStart(Integer num) {
        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.MONTH, num);
        calendar.set(Calendar.DAY_OF_MONTH, 1);
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.CHINA);
        return sdf.format(calendar.getTime());
    }

    /**
     * 获取当前月的结束时间
     * @param date 点前时间
     * @return 返回时间 格式yyyy-MM-dd 23:59:59999
     */
    public static Date getMonthEnd(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
        calendar.set(Calendar.HOUR_OF_DAY, 23);
        calendar.set(Calendar.MINUTE, 59);
        calendar.set(Calendar.SECOND, 59);
        calendar.set(Calendar.MILLISECOND,999);
        return calendar.getTime();
    }

    /**
     * 获取当前月的结束时间，没有毫秒
     * @param date 点前时间
     * @return 返回时间 格式yyyy-MM-dd 23:59:59
     */
    public static Date getMonthEndNoMillisecond(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
        calendar.set(Calendar.HOUR_OF_DAY, 23);
        calendar.set(Calendar.MINUTE, 59);
        calendar.set(Calendar.SECOND, 59);
        return calendar.getTime();
    }

    /**
     * 获取当前月的结束时间
     * @param num 0拿取当月，正代表后，负代表前，值为几个（月）
     * @return 返回时间 格式yyyy-MM-dd 23:59:59
     */
    public static String getMonthEnd(Integer num) {
        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.MONTH, num);
        calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
        calendar.set(Calendar.HOUR_OF_DAY, 23);
        calendar.set(Calendar.MINUTE, 59);
        calendar.set(Calendar.SECOND, 59);
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.CHINA);
        return sdf.format(calendar.getTime());
    }

    /**
     * 获取当前年的开始时间
     * @param time 时间
     * @return 返回时间 格式yyyy-MM-dd 00:00:00
     */
    public static Date getYearStart(Date time) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(time);
        calendar.set(Calendar.MONTH, 0);
        calendar.set(Calendar.DAY_OF_MONTH, 1);
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND,0);
        return calendar.getTime();
    }

    /**
     * 获取当前年的结束时间
     * @param time 时间
     * @return 返回时间 格式yyyy-MM-dd 23:59:59999
     */
    public static Date getYearEnd(Date time) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(time);
        calendar.set(Calendar.MONTH, 11);
        calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DATE));
        calendar.set(Calendar.HOUR_OF_DAY, 23);
        calendar.set(Calendar.MINUTE, 59);
        calendar.set(Calendar.SECOND, 59);
        calendar.set(Calendar.MILLISECOND,999);
        return calendar.getTime();
    }

    /**
     * 获取当前年的结束时间，没有毫秒
     * @param time 时间
     * @return 返回时间 格式yyyy-MM-dd 23:59:59
     */
    public static Date getYearEndNoMillisecond(Date time) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(time);
        calendar.set(Calendar.MONTH, 11);
        calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DATE));
        calendar.set(Calendar.HOUR_OF_DAY, 23);
        calendar.set(Calendar.MINUTE, 59);
        calendar.set(Calendar.SECOND, 59);
        return calendar.getTime();
    }


    /**这天的开始时间
     * 日期2000-01-01变2000-01-01 00:00:00
     */
    public static String dayToStart(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);
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.CHINA);
        return sdf.format(calendar.getTime());
    }

    /**这天的最后时间
     * 日期2000-01-01变2000-01-01 23:59:59
     */
    public static String dayToEnd(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);
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.CHINA);
        return sdf.format(calendar.getTime());
    }

    /**这天的开始时间
     * 日期2000-01-01变2000-01-01 00:00:00
     */
    public static Date dayToStartDate(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);
        return calendar.getTime();
    }

    /**这天的最后时间
     * 日期2000-01-01变2000-01-01 23:59:59999
     */
    public static Date dayToEndDate(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);
        return calendar.getTime();
    }

    /**这天的最后时间，没有毫秒
     * 日期2000-01-01变2000-01-01 23:59:59
     */
    public static Date dayToEndDateNoMillisecond(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);
        return calendar.getTime();
    }

    /**获取月份的天数
     * @param date 时间
     * @return 月份的天数
     */
    public static int getMonthDays(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        cal.set(Calendar.DATE, 1);
        cal.roll(Calendar.DATE, -1);
        return cal.getActualMaximum(Calendar.DATE);
    }
    
    /**获取月份的天数
     * @param year 年份
     * @param month 月份
     * @return 月份的天数
     */
    public static int getMonthDays(int year, int month) {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, year);
        cal.set(Calendar.MONTH, (month - 1));
        cal.set(Calendar.DATE, 1);
        cal.roll(Calendar.DATE, -1);
        return cal.getActualMaximum(Calendar.DATE);
    }

    /**获取月份的天数
     * @param yearMonth 年月
     * @param format 时间格式
     * @return 返回
     */
    public static int getMonthDays(String yearMonth,String format) {
        SimpleDateFormat sdf = new SimpleDateFormat(format);
        Calendar calendar = Calendar.getInstance();
        try {
            calendar.setTime(sdf.parse(yearMonth));
        } catch (ParseException e) {
            e.printStackTrace();
        }
        calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
        return calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
    }

    /**当天多少点前
     * @param date 时间
     * @param num 多少点前，不含当点前，24小时制
     * @return 月份的天数
     */
    public static boolean getFrontMinute(Date date,int num) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        cal.set(Calendar.HOUR_OF_DAY, num-1);
        cal.set(Calendar.MINUTE, 59);
        cal.set(Calendar.SECOND, 59);

        return date.compareTo(cal.getTime()) < 1;
    }

    /**
     * 获得某个日期的当天某点
     * 例如:2022-12-26 11:20:00 -> 2022-12-26 13:00:00
     * @param num 24小时
     */
    public static String getHourDayTime(Date date,int num) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.set(Calendar.HOUR_OF_DAY, num);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.CHINA);
        return sdf.format(calendar.getTime());
    }

    /**
     * 获取时间当月剩余天数
     * */
    public static Integer getMonthSurplus(Date date) {
        Calendar month = Calendar.getInstance();
        month.setTime(new Date());
        month.set(Calendar.DATE, 1);
        month.roll(Calendar.DATE, -1);
        return month.getActualMaximum(Calendar.DATE) - Calendar.getInstance().get(Calendar.DAY_OF_MONTH);
    }

    /**获取当前时间所在周的周一00:00:00*/
    public static Date getMonday(Date date) {
        Calendar calendar = Calendar.getInstance(Locale.CHINA);
        calendar.setTime(date);
        //以周一为首日
        calendar.setFirstDayOfWeek(Calendar.MONDAY);
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        //周一
        calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
        return calendar.getTime();
    }

    /**
     * 根据出生年月日计算年龄
     * @param birth
     * @return
     */
    public static int getAge(Date birth) {
        Calendar cal = Calendar.getInstance();
        int thisYear = cal.get(Calendar.YEAR);
        int thisMonth = cal.get(Calendar.MONTH);
        int dayOfMonth = cal.get(Calendar.DAY_OF_MONTH);

        cal.setTime(birth);
        int birthYear = cal.get(Calendar.YEAR);
        int birthMonth = cal.get(Calendar.MONTH);
        int birthdayOfMonth = cal.get(Calendar.DAY_OF_MONTH);

        int age = thisYear - birthYear;

        // 未足月
        if (thisMonth <= birthMonth) {
            // 当月
            if (thisMonth == birthMonth) {
                // 未足日
                if (dayOfMonth < birthdayOfMonth) {
                    age--;
                }
            } else {
                age--;
            }
        }
        return age;
    }

    /**
     * 获取某天结束秒数
     * @param dateTime      日期
     * @param lateSecond    延迟秒数
     * @return
     */
    public static long todayEndSecond(Date dateTime, Long lateSecond) {
        if(dateTime == null){
            dateTime = new Date();
        }
        if(lateSecond == null){
            lateSecond = 0L;
        }
        Date endTime = DateUtil.dayToEndDate(dateTime);
        return differSecond(dateTime, endTime) + lateSecond;
    }

    /**
     * 计算2个实际相差秒数
     * @param startTime 开始时间
     * @param endTime   结束时间
     * @return
     */
    public static long differSecond(Date startTime, Date endTime) {
        if(startTime == null || endTime == null){
            return 0L;
        }
        long sTime = startTime.getTime();
        long eTime = endTime.getTime();
        return (eTime - sTime) / 1000L;
    }
}