日期计算工具类

电玩女神 2022-05-16 08:58 350阅读 0赞

package com.jp.tech.artisan_cms.common.util;
    
    import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.util.*;
    
    
    @SuppressWarnings("ALL")
    public class DateUtil {
        public static final String DATE_FORMAT_1 = "yy-MM-dd";
        public static final String DATE_FORMAT_2 = "yyyy-MM-dd";
        public static final String DATE_FORMAT_3 = "yyMMddHHmmss";
        public static final String DATE_FORMAT_4 = "yy/MM/dd";
        public static final String yyyyMMddHHmmss = "yyyy-MM-dd HH:mm:ss";
    
        /**
         * 计算两个时间多少分钟
         *
         * @param endDate
         * @param nowDate
         * @return
         */
        public static String 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();
            long sec = diff % nd % nh % nm / ns; //秒
            long between = diff / 1000;//除以1000是为了转换成秒
            long min = between / 60;
            return String.valueOf(min + "." + sec);
        }
    
        /**
         * @Describe 日期加减
         * @Param Calendar.MONTH YERR DATE etc
         * @Auther xingyu.lu
         * @Date 18/3/29 09:18
         */
        public static Date dateAdd(Date date, int field, int amount) {
            Calendar cal = Calendar.getInstance();
            cal.setTime(date);
            cal.add(field, amount);
            return cal.getTime();
        }
    
        /**
         * @Describe 当前日期字符串
         * @Auther xingyu.lu
         * @Date 18/3/29 09:18
         */
        public static String getNowDateStr(String dateFormat) {
            SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);
            return sdf.format(new Date());
        }
    
        /**
         * @Describe Date 转 String
         * @Auther xingyu.lu
         * @Date 18/3/29 09:17
         */
        public static String formatDateToStr(Date date, String dateFormat) {
            SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);
            return sdf.format(date);
        }
    
        /**
         * @Describe String 转 Date
         * @Auther xingyu.lu
         * @Date 18/4/8 16:27
         */
        public static Date parseStrToDate(String date, String dateFormat) {
            SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);
            Date dt = null;
            try {
                dt = sdf.parse(date);
            } catch (ParseException e) {
                e.printStackTrace();
            }
            return dt;
        }
    
        /**
         * @Describe 获取两个日期期间的所有天数（包含开始结束）
         * @Param Date begin
         * @Param Date end
         * @Return List<String> 日期
         * @Auther xingyu.lu
         * @Date 18/3/28 19:56
         */
        public static List<String> getBetweenDates(Date begin, Date end) {
            List<String> result = new ArrayList<String>();
            Calendar tempStart = Calendar.getInstance();
            tempStart.setTime(begin);
            while (begin.getTime() <= end.getTime()) {
                result.add(formatDateToStr(tempStart.getTime(), DATE_FORMAT_2));
                tempStart.add(Calendar.DATE, 1);
                begin = tempStart.getTime();
            }
            return result;
        }
    
        
        /**
         * @Describe 获取两日期相差天数
         * @Param start - end
         * @Return
         * @Auther xingyu.lu
         * @Date 18/3/29 18:16
         */
        public static int dateDiffer(Date start, Date end) {
    
            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 = start.getTime() - end.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
            // long sec = diff % nd % nh % nm / ns;
            return day.intValue();
        }
    
    
      
        /**
         * 计算相差多少天，多少小时，多少分钟，多少秒
         *
         * @param endDate
         * @param nowDate
         * @return
         */
        public static String getDateSec(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 String.valueOf(sec);
    //        return day + "天" + hour + "小时" + min + "分钟" +sec + "秒";
        }
    
        public static void main(String[] args) {
    
        /*    System.out.println(
                    getDateCycle(parseStrToDate("2018-04-22", DateUtil.DATE_FORMAT_2),
                            parseStrToDate("2018-04-30", DateUtil.DATE_FORMAT_2),
                            1, 1, 1, 2));
    
            System.out.println(getRoundDate(parseStrToDate("2018-04-22", DateUtil.DATE_FORMAT_2),
                    parseStrToDate("2018-04-30", DateUtil.DATE_FORMAT_2), true,
                    1, 1, 1, 2, 1));*/
    
            System.out.println(getDatePoor(new Date(),
                    parseStrToDate("2018-08-17 14:21:12", yyyyMMddHHmmss)));
            System.out.println(getDateSec(new Date(),
                    parseStrToDate("2018-08-17 14:21:12", yyyyMMddHHmmss)));
    
        }
    
    }