将joda DateTime转换为java.time.LocalDate

Question

我有一个简单的问题：如何从joda DateTime转换为LocalDate？

我试过这样但没有成功：

final LocalDate startDate = LocalDate.ofEpochDay(start.getMillis());

Answer 1

public class DateUtils {

    /**
     * Convert {@link java.time.LocalDate} to {@link org.joda.time.DateTime}
     */
    public DateTime toDateTime(LocalDate localDate) {
        return new DateTime(DateTimeZone.UTC).withDate(
                localDate.getYear(), localDate.getMonthValue(), localDate.getDayOfMonth()
        ).withTime(0, 0, 0, 0);
    }

    /**
     * Convert {@link org.joda.time.DateTime} to {@link java.time.LocalDate}
     */
    public LocalDate toLocalDate(DateTime dateTime) {
        DateTime dateTimeUtc = dateTime.withZone(DateTimeZone.UTC);
        return LocalDate.of(dateTimeUtc.getYear(), dateTimeUtc.getMonthOfYear(), dateTimeUtc.getDayOfMonth());
    }
}

Answer 2

    LocalDateTime demoDateTime = Instant.ofEpochMilli(DateTime.now().getMillis())
            .atZone(ZoneId.systemDefault())
            .toLocalDateTime();
    demoDateTime.toLocalDate();
    demoDateTime.toLocalTime();

用毫秒来转换。