关于java:JAVA日常工作日期转换

1.格林威治工夫转换成北京工夫(13位毫秒值转成时分秒)
1.1：先转成时分秒的格局，间接在小时上减少8小时

if (StringUtil.isNotEmpty(list)) {    String str = list.get(0).get("startTime").toString(); Date date = DateUtils.stringtoDate(str, "yyyy-MM-dd'T'HH:mm:ss.SSS"); date = DateUtils.addHour(date, 8); String formatDate = DateUtils.dateToString(date, "yyyy-MM-dd HH:mm:ss.SSS"); list.get(0).put("startTime", formatDate); return list.get(0);}

1.2：间接转换成北京工夫（最初后果失去的13位毫秒值）

    public static long tzToLong(String time){        time = time.replace("Z", " UTC");        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS Z");        SimpleDateFormat defaultFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");        Date times = null;        try {            times = format.parse(time);        } catch (ParseException e) {            e.printStackTrace();        }        String result = defaultFormat.format(times);        Date parse = null;        try {            parse = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(result);        } catch (ParseException e) {            e.printStackTrace();        }        Long milliTime = parse.getTime();        return milliTime;    }

2.时分秒转换成13位毫秒值(工夫戳)

        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");        Date date = simpleDateFormat.parse(s);         long time = date.getTime();       String milliTime = String.valueOf(time);