utc date 转 本地时间(java)

public static long utcDateToLocalTime(String utfDate) throws Exception{        Instant timestamp = Instant.parse(utfDate);        ZonedDateTime localTime = timestamp.atZone(ZoneId.systemDefault());        return localTime.toEpochSecond() * 1000;    }

private static  SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");public static String ISO_FORMAT = "yyyy-MM-dd'T'HH:mm:ss.SSSXX"; public static String localDateToUtcDate(String localDate) throws ParseException {        return isoFormatter.format(format.parse(localDate)).toString();    }