LocalDate、LocalDateTime与Date之间的相互转化

public final class LocalDateUtil {

    /**
     * java.util.Date 转换成 LocalDate
     * @author t_gbinb
     * @date 2019/7/17 14:52
     * @param date
     * @return java.time.LocalDate
     */
    public static LocalDate dateToLocalDate(Date date){
        Instant instant = date.toInstant();
        ZoneId zoneId = ZoneId.systemDefault();
        return instant.atZone(zoneId).toLocalDate();
    }

    /**
     * 字符串转LocalDate
     * @author t_gbinb
     * @date 2019/7/20 17:39
     * @param dateStr
     * @param pattern
     * @return java.time.LocalDate
     */
    public static LocalDate strToLocalData(String dateStr, String pattern){
        if(pattern==null || pattern.trim().length()==0){
            pattern = "yyyy-MM-dd";
        }
        return LocalDate.parse(dateStr, DateTimeFormatter.ofPattern(pattern));
    }

    /**
     * java.util.Date 转换成 LocalDateTime
     * @author t_gbinb
     * @date 2019/7/17 14:56
     * @param date
     * @return java.time.LocalDateTime
     */
    public static LocalDateTime dateToLocalDateTime(Date date){
        Instant instant = date.toInstant();
        ZoneId zoneId = ZoneId.systemDefault();
        return instant.atZone(zoneId).toLocalDateTime();
    }

    /**
     * LocalDate 转换成 java.util.Date
     * @author t_gbinb
     * @date 2019/7/17 14:53
     * @param localDate
     * @return java.util.Date
     */
    public static Date localDateToDate(LocalDate localDate){
        ZoneId zoneId = ZoneId.systemDefault();
        ZonedDateTime zdt = localDate.atStartOfDay(zoneId);
        return Date.from(zdt.toInstant());
    }

    /**
     * localDateTime 转换成 java.util.Date
     * @author t_gbinb
     * @date 2019/7/17 14:59
     * @param localDateTime
     * @return java.util.Date
     */
    public static Date localDateTimeToDate(LocalDateTime localDateTime){
        ZoneId zoneId = ZoneId.systemDefault();
        ZonedDateTime zdt = localDateTime.atZone(zoneId);
        return Date.from(zdt.toInstant());
    }

    /**
     * 格式化LocalDate
     * @author t_gbinb
     * @date 2019/7/17 15:05
     * @param localDate
     * @param pattern
     * @return java.lang.String
     */
    public static String formatLocalDate(LocalDate localDate, String pattern){
        return localDate.format(DateTimeFormatter.ofPattern(pattern));
    }

    /**
     * 格式化 LocalDateTime
     * @author t_gbinb
     * @date 2019/7/17 15:05
     * @param localDateTime
     * @param pattern
     * @return java.lang.String
     */
    public static String formatLocalDateTime(LocalDateTime localDateTime, String pattern){
        return localDateTime.format(DateTimeFormatter.ofPattern(pattern));
    }
}