计算账单逾期几天，还有几天缴费

悠悠 2024-03-24 18:11 12阅读 0赞

/**
         *
         *    nowDate 为当前时间
         *    endDate 为账单日
         *    计算账单是否逾期几天
         *    计算账单还有几天缴费
         *
         * 2023-09-09 到 2023-09-06 差 -3.0天
         * 2023-09-09 到 2023-09-07 差 -2.0天
         * 2023-09-09 到 2023-09-08 差 -1.0天
         * 2023-09-09 到 2023-09-09 差 1.0天
         * 2023-09-09 到 2023-09-10 差 2.0天
         * 2023-09-09 到 2023-09-11 差 3.0天
         * 2023-09-09 到 2023-09-12 差 4.0天
         *
         */
        public static Double getDays(Calendar nowDate, Calendar endDate) {
            String nowDateStr = DateUtil.formatYyyyMMdd(nowDate.getTime());
            String endDateStr = DateUtil.formatYyyyMMdd(endDate.getTime());
            System.out.print( nowDateStr + " 到 " + endDateStr+" 差 ");
    
            Date nowDateDate = DateUtil.parseYyyyMMdd(nowDateStr);
            Date endDateDate = DateUtil.parseYyyyMMdd(endDateStr);
    
            nowDate.setTime(nowDateDate);
            endDate.setTime(endDateDate);
            long nowDateMillis = nowDate.getTimeInMillis();
            long endDateMillis = endDate.getTimeInMillis();
            Long day = 0L;
            if(nowDateMillis < endDateMillis){
                //开始时间在结束之前为正数  当天算1天   2-27截至    2-26到2-27算2天      2-27到2-27算1天
                //日期是2-26，到期时间是 2-26 24：00：00
                endDate.add(Calendar.DAY_OF_YEAR, 1);
                day = cn.hutool.core.date.DateUtil.between(nowDate.getTime(), endDate.getTime(), DateUnit.DAY);
            }else{
                //开始时间在结束之后为负数   2-26截至    2-26到2-27算1天   逾期1天
                day = cn.hutool.core.date.DateUtil.between(nowDate.getTime(), endDate.getTime(), DateUnit.DAY);
                day = 0 - day;
            }
            if(day == 0L){
                day = 1L;
            }
            System.out.println(day.doubleValue()+"天");
            return  day.doubleValue();
        }
    
     
        public static void main(String[] args) throws ParseException {
            Calendar nowDate =  Calendar.getInstance();
            nowDate.setTime(DateUtil.parseYyyyMMddHHmmss("2023-09-09 11:10:01"));
    
    
            Calendar endDate0 =  Calendar.getInstance();
            endDate0.setTime(DateUtil.parseYyyyMMdd("2023-09-06"));
            Calendar endDate1 =  Calendar.getInstance();
            endDate1.setTime(DateUtil.parseYyyyMMdd("2023-09-07"));
            Calendar endDate2 =  Calendar.getInstance();
            endDate2.setTime(DateUtil.parseYyyyMMdd("2023-09-08"));
            Calendar endDate3 =  Calendar.getInstance();
            endDate3.setTime(DateUtil.parseYyyyMMdd("2023-09-09"));
            Calendar endDate4 =  Calendar.getInstance();
            endDate4.setTime(DateUtil.parseYyyyMMdd("2023-09-10"));
            Calendar endDate5 =  Calendar.getInstance();
            endDate5.setTime(DateUtil.parseYyyyMMdd("2023-09-11"));
            Calendar endDate6 =  Calendar.getInstance();
            endDate6.setTime(DateUtil.parseYyyyMMdd("2023-09-12"));
    
            Double days0 = getDays(nowDate, endDate0);
            Double days1 = getDays(nowDate, endDate1);
            Double days2 = getDays(nowDate, endDate2);
            Double days3 = getDays(nowDate, endDate3);
            Double days4 = getDays(nowDate, endDate4);
            Double days5 = getDays(nowDate, endDate5);
            Double days6 = getDays(nowDate, endDate6);
    
            System.out.println();
    
    
        }