java解析日期字符串中毫秒值的坑

kyaa111 3年前 ⋅ 751 阅读 
public class Test {

    private static void format1() throws ParseException {

        String dateStr = "2020-09-29 15:20:33.15";
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
        System.out.println(format.format(format.parse(dateStr)));

    }

    private static void format2() throws ParseException {

        String dateStr = "2020-09-29 15:20:33.150";
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
        System.out.println(format.format(format.parse(dateStr)));

    }

    private static void format3() throws ParseException {

        String dateStr = "2020-09-29 15:20:33.015";
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
        System.out.println(format.format(format.parse(dateStr)));

    }

    public static void main(String[] args) throws Exception {
        format1();
        format2();
        format3();
    }
}

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