java格式化时间到毫秒:

 public static void main(String[] args) throws ParseException {
        Date date = DateUtils.parseDate("2020-02-06 01:58:00.000020", "yyyy-MM-dd HH:mm:ss.SSSSSS");
        System.out.println( DateFormatUtils.format(date,"yyyy-MM-dd HH:mm:ss.SSSSSS"));
        System.out.println( DateFormatUtils.format(new Date(),"yyyy-MM-dd HH:mm:ss.SSSSSS"));

    }

 

附录:

java格式化字母表

SymbolMeaningPresentationExample
Gera designatorTextAD
yyearNumber2009
Mmonth in yearText & NumberJuly & 07
dday in monthNumber10
hhour in am/pm (1-12)Number12
Hhour in day (0-23)Number0
mminute in hourNumber30
ssecond in minuteNumber55
SmillisecondNumber978
Eday in weekTextTuesday
Dday in yearNumber189
Fday of week in monthNumber2 (2nd Wed in July)
wweek in yearNumber27
Wweek in monthNumber2
aam/pm markerTextPM
khour in day (1-24)Number24
Khour in am/pm (0-11)Number0
ztime zoneTextPacific Standard Time
'escape for textDelimiter(none)
'single quoteLiteral'
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