LocalDate与date转换的使用

系统管理员 2023-02-18 03:05 19阅读 0赞

/**
         * Date转换成LocalDate
         * @param date
         * @return
         */
        public static LocalDate date2LocalDate(Date date) {
            if(null == date) {
                return null;
            }
            return date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
        }
    
        /**
         * LocalDate转换成Date
         * @param localDate
         * @return
         */
        public static Date localDate2Date(LocalDate localDate) {
            if(null == localDate) {
                return null;
            }
            ZonedDateTime zonedDateTime = localDate.atStartOfDay(ZoneId.systemDefault());
            return Date.from(zonedDateTime.toInstant());
        }
    
        //获取月第一天
        public static Date getStartDayOfMonth(String date) {
            LocalDate now = LocalDate.parse(date);
            return getStartDayOfMonth(now);
        }
    
        public static Date getStartDayOfMonth(LocalDate date) {
            LocalDate now = date.with(TemporalAdjusters.firstDayOfMonth());
            return localDate2Date(now);
        }
    
        public static Date getStartDayOfMonth() {
            return getStartDayOfMonth(LocalDate.now());
        }
    
    
        //获取月最后一天
        public static Date getEndDayOfMonth(String date) {
            LocalDate localDate = LocalDate.parse(date);
            return getEndDayOfMonth(localDate);
        }
    
        public static Date getEndDayOfMonth(Date date) {
            return getEndDayOfMonth(date2LocalDate(date));
        }
    
        public static Date getEndDayOfMonth(LocalDate date) {
            LocalDate now = date.with(TemporalAdjusters.lastDayOfMonth());
            Date.from(now.atStartOfDay(ZoneId.systemDefault()).plusDays(1L).minusNanos(1L).toInstant());
            return localDate2Date(now);
        }
    
        public static Date getEndDayOfMonth() {
            return getEndDayOfMonth(LocalDate.now());
        }
    
    
        //获取周第一天
        public static Date getStartDayOfWeek(String date) {
            LocalDate now = LocalDate.parse(date);
            return getStartDayOfWeek(now);
        }
    
        public static Date getStartDayOfWeek(TemporalAccessor date) {
            TemporalField fieldISO = WeekFields.of(Locale.CHINA).dayOfWeek();
            LocalDate localDate = LocalDate.from(date);
            localDate = localDate.with(fieldISO, 1);
            return localDate2Date(localDate);
        }
    
        //获取周最后一天
        public static Date getEndDayOfWeek(String date) {
            LocalDate localDate = LocalDate.parse(date);
            return getEndDayOfWeek(localDate);
        }
    
        public static Date getEndDayOfWeek(TemporalAccessor date) {
            TemporalField fieldISO = WeekFields.of(Locale.CHINA).dayOfWeek();
            LocalDate localDate = LocalDate.from(date);
            localDate = localDate.with(fieldISO, 7);
            return Date.from(localDate.atStartOfDay(ZoneId.systemDefault()).plusDays(1L).minusNanos(1L).toInstant());
        }
    
        //一天的开始
        public static LocalDateTime getStartOfDay(LocalDate date) {
            LocalDateTime time = LocalDateTime.of(date, LocalTime.MIN);
            return time;
        }
    
        public static LocalDateTime getStartOfDay() {
            return getStartOfDay(LocalDate.now());
        }
    
        /**
         * 一天的结束
         */
        public static LocalDateTime getEndOfDay(LocalDate date) {
            LocalDateTime time = LocalDateTime.of(date, LocalTime.MAX);
            return time;
        }
    
        public static LocalDateTime getEndOfDay() {
            return getEndOfDay(LocalDate.now());
        }
        //获取下个月的某一天
        public static LocalDate getNextMonth(String date) {
            LocalDate now = LocalDate.parse(date);
            return now.minusMonths(-1);
        }
        //获取上个月的某一天
        public static LocalDate getLastMonth(String date) {
            LocalDate now = LocalDate.parse(date);
            return now.minusMonths(1);
        }