如何在原来的项目中使用java8的时间api

雨点打透心脏的1/2处 2022-06-08 03:40 190阅读 0赞

public class DateUtil {
    
        public static final String YYYYMMDD = "yyyyMMdd";
        public static final String HHMMSS = "HHmmss";
        public static final String YYYY_MM_DD = "yyyy-MM-dd";
        public static final String YYYYMMDDHHMM = "yyyyMMddHHmm";
        public static final String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";
        public static final String YYYYMMDDHHMMSSSSS = "yyyyMMddHHmmssSSS";
        public static final String YYYYMMDD_HH_MM_SS = "yyyyMMdd HH:mm:ss";
        public static final String YYYY1MM1DDHHMMSS_SSS = "yyyy/MM/dd:HH:mm:ss.SSS";
        public static final String YYYY1MM1DDHHMMSSSSSZZ = "yyyy/MM/dd:HH:mm:ss.SSS ZZ";
        public static final String YYYY1MM1DDHHMMSS = "yyyy/MM/dd HH:mm:ss";
        public static final String YYYY_MM_DDHHMMSS = "yyyy-MM-dd HH:mm:ss";
        public static final String MM_DD = "MM-dd";
        public static final int ZERO = 0;
        public static final ZoneId zoneId = ZoneId.systemDefault();
    
        public static Date getCurrentDate() {
            return new Date();
        }
    
        public static Date getYesterday(Date date) {
            LocalDateTime localDateTime = getLocalDateTime(date).plusDays(-1);
            return convertToDate(localDateTime);
        }
    
        public static Date getIntervalDay(Date date, int day) {
            LocalDateTime localDateTime = getLocalDateTime(date).plusDays(day);
            return convertToDate(localDateTime);
        }
    
        public static Date getIntervalHours(Date date, int hours) {
            LocalDateTime localDateTime = getLocalDateTime(date).plusHours(hours);
            return convertToDate(localDateTime);
        }
    
        public static Date getIntervalMinutes(Date date, int minutes) {
            LocalDateTime localDateTime = getLocalDateTime(date).plusMinutes(minutes);
            return convertToDate(localDateTime);
        }
    
        public static Date getIntervalSeconds(Date date, int seconds) {
            LocalDateTime localDateTime = getLocalDateTime(date).plusSeconds(seconds);
            return convertToDate(localDateTime);
        }
    
        public static Date convertStringToDate(String date, String format) {
            SimpleDateFormat dateFormat = new SimpleDateFormat(format);
            try {
                return dateFormat.parse(date);
            } catch (ParseException e) {
                throw new RuntimeException("日期转换异常： " + date, e);
            }
        }
    
        public static String convertDateToString(Date date, String format) {
            return new SimpleDateFormat(format).format(date);
        }
    
        public static String getIntervalDate(Date date, String format, int days) {
            Date expectedDate = getIntervalDay(date, days);
            return convertDateToString(expectedDate, format);
        }
    
        public static String getIntervalMinute(Date date, String format, int minutes) {
            Date expectedDate = getIntervalMinutes(date, minutes);
            return convertDateToString(expectedDate, format);
        }
    
        public static Date getStartTimeOfSpecifiedDate(Date date) {
            LocalDateTime localDateTime = getLocalDateTime(date);
            localDateTime = localDateTime.withHour(ZERO);
            localDateTime = localDateTime.withSecond(ZERO);
            localDateTime = localDateTime.withMinute(ZERO);
            localDateTime = localDateTime.withNano(ZERO);
            return convertToDate(localDateTime);
        }
    
        public static int getBetweenDays(Date startDate, Date endDate) {
            LocalDateTime startLocalDate = getLocalDateTime(startDate);
            LocalDateTime endLocalDate = getLocalDateTime(endDate);
            Duration duration = Duration.between(startLocalDate, endLocalDate);
            return (int) duration.toDays();
        }
    
        private static Date convertToDate(LocalDateTime localDateTime) {
            Instant instant = localDateTime.atZone(zoneId).toInstant();
            return new Date(instant.toEpochMilli());
        }
    
        private static LocalDateTime getLocalDateTime(Date date) {
            Instant instant = date.toInstant();
            ZoneId zone = ZoneId.systemDefault();
            return LocalDateTime.ofInstant(instant, zone);
        }
    }