获取一段时间内的每一天(实现两个日期之间的所有日期遍历)

刺骨的言语ヽ痛彻心扉 2022-12-08 01:48 151阅读 0赞

/**
         * 获取一段时间内的每一天
         * @param beginDate
         * @param endDate
         * @return
         */
        public static List<String>   getEveryDay(String beginDate,String endDate)   {
            final Calendar c = Calendar.getInstance();
            c.clear();
    
            if (beginDate.indexOf("-") == -1 || endDate.indexOf("-") == -1 ) {
                return Collections.emptyList();
            }
            String[] split = beginDate.split("-");
            String[] endsplit = endDate.split("-");
            if (split.length < 3 || endsplit.length < 3) {
                return Collections.emptyList();
            }
    
            int start_year  = 0;
            int  startMonth = 0;
            int startDate = 0;
            Date eDate = null;
    
    
            try {
                start_year = Integer.valueOf(split[0]);
                startMonth = Integer.valueOf(split[1]);
                startDate = Integer.valueOf(split[2]);
                eDate = formatDate.parse(endDate);
                Date bDate= formatDate.parse(beginDate);
                if (eDate.getTime() - bDate.getTime() < 0) {
                    return Collections.emptyList();
                }
            } catch (NumberFormatException e) {
                e.printStackTrace();
                return Collections.emptyList();
            } catch (ParseException e) {
                e.printStackTrace();
                return Collections.emptyList();
            }
    
    
            ArrayList<String> resultMap = new ArrayList<>();
    
            for (c.set(start_year, startMonth-1, startDate,0,0,0); c.get(Calendar.YEAR) >= start_year; c.add(Calendar.DATE, 1)) {
                long timeInMillis = c.getTimeInMillis();
                Date time = c.getTime();
                TimeZone timeZone = c.getTimeZone();
                long time1 = c.getTime().getTime();
                long time2 = eDate.getTime();
    
                String date = formatDate.format(timeInMillis);
                resultMap.add(date);
                if (c.getTimeInMillis() >= eDate.getTime()) {
                    break;
                }
            }
            return resultMap;
    
        }
    
    
    
    //例子
     public static void main(String[] args) {
            List<String> everyDay = getEveryDay("2018-12-31", "2019-2-1");
    
            System.out.println(everyDay);
        }