说说字符串转 OffSetDateTime 你真的会用吗

public class OffSetDateTimeConverter {
    private static DateTimeFORMatter DATE_FORMAT = new DateTimeFormatterBuilder().appendPattern("yyyy-MM-dd")
            .parseDefaulting(ChronoField.HOUR_OF_DAY, 0)
            .parseDefaulting(ChronoField.MINUTE_OF_HOUR, 0)
            .parseDefaulting(ChronoField.SECOND_OF_MINUTE, 0)
            .parseDefaulting(ChronoField.MILLI_OF_SECOND, 0)
            .parseDefaulting(ChronoField.OFFSET_SECONDS, 0)
            .toFormatter();
    private static DateTimeFormatter DATE_TIME_FORMAT = new DateTimeFormatterBuilder().appendPattern("yyyy-MM-dd HH:mm:ss")
            .parseDefaulting(ChronoField.MILLI_OF_SECOND, 0)
            .parseDefaulting(ChronoField.OFFSET_SECONDS, 0)
            .toFormatter();
    public static OffsetDateTime convertDate(String date) {
        if (StringUtils.isBlank(date)) {
            return null;
        }
        return OffsetDateTime.parse(date, DATE_FORMAT);
    }
    public static OffsetDateTime convertDateTime(String dateTime) {
        if (StringUtils.isBlank(dateTime)) {
            return null;
        }
        return OffsetDateTime.parse(dateTime, DATE_TIME_FORMAT);
    }
}

public class OffSetDateTimeConverter {
    
    public static OffsetDateTime convertDate(String date) {
        if (StringUtils.isBlank(date)) {
            return null;
        }
        return LocalDate.parse(date, ISO_LOCAL_DATE).atTime(LocalTime.MIN).atZone(systemDefault()).toOffsetDateTime();
    }
    
    public static OffsetDateTime convertDateTime(String dateTime) {
        if (StringUtils.isBlank(dateTime)) {
            return null;
        }
        DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        LocalDateTime localDateTime = LocalDateTime.parse(dateTime, dtf);
        return OffsetDateTime.of(localDateTime, ZoneOffset.UTC);
    }
}

public class OffSetDateTimeConverter {
    
    
    public static OffsetDateTime convertDate(String date) {
        if (StringUtils.isBlank(date)) {
            return null;
        }
        LocalDateTime localDateTime = LocalDateTime.parse(date, DateTimeFormatter.ofPattern("yyyy-MM-dd"));
        return OffsetDateTime.of(localDateTime, ZoneId.systemDefault().getRules().getOffset(localDateTime));
    }
    
    public static OffsetDateTime convertDateTime(String dateTime) {
        if (StringUtils.isBlank(dateTime)) {
            return null;
        }
        LocalDateTime localDateTime = LocalDateTime.parse(dateTime, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
        return OffsetDateTime.of(localDateTime, ZoneId.systemDefault().getRules().getOffset(localDateTime));
    }
}

OffsetDateTime creationTimestamp;
creationTimestamp.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"))