两个日期之间相差的月数

String dateNow = getnowtime();//系统时间
Temporal temporal1 = LocalDate.parse(dateNow, DateTimeFormatter.ofPattern("yyyy-MM-dd"));
String ts = "yyyy-MM-dd";

SimpleDateFormat sim = new SimpleDateFormat("yyyy-MM-dd");
String str = null;
str = sim.format(sim.parse(ts));
Temporal temporal2 = LocalDate.parse(str, DateTimeFormatter.ofPattern("yyyy-MM-dd"));
//相差月份
long l = ChronoUnit.MONTHS.between(temporal2, temporal1);


    public String getnowtime() {
        LocalDateTime today = LocalDateTime.now();
        DateTimeFormatter fmt = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        String dateStr = today.format(fmt);
        return dateStr;
    }