Java获取指定日期到当前日期的差距

一、指定日期到今天的y年m月d日

 private JSONObject getYesrMonthDay(String dataParam){
     JSONObject res = new JSONObject();
     /*只比较年月日，不要时间*/
     DateTimeFormatter df = DateTimeFormatter.ofPattern("yyyy-MM-dd");
     LocalDate destoryData = LocalDate.parse(dataParam, df);
     Date date =new Date();
     LocalDate currentData = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
     // 计算日期差距
     Period period = Period.between(destoryData, currentData);
     // 获取相差的年、天
     Integer years = period.getYears();
     Integer days = period.getDays();
     Integer mouths = period.getMonths();

     res.put("years",years);
     res.put("mouths",mouths);
     res.put("days",days);
     return res;
 }

二、指定日期到今天的总日或月数

private Long getDays(String dataParam){
    /*只比较年月日，不要时间*/
    dataParam = dataParam.substring(0,10);
    DateTimeFormatter df = DateTimeFormatter.ofPattern("yyyy-MM-dd");
    LocalDate destoryData = LocalDate.parse(dataParam, df);
    // 获取今天日期
    LocalDate today = LocalDate.now();
    // 计算两个日期之间的天数
    long daysBetween = ChronoUnit.DAYS.between(destoryData, today);
    // 计算相差的月份
    long monthsBetween = ChronoUnit.MONTHS.between(specifiedDate, currentDate);
    return daysBetween;
}