Java获取两个日期之间的所有日期，并查出是周几

╰半橙微兮° 2022-10-18 00:58 224阅读 0赞

**直接上代码**

/** * description 拆分日期 * * @param startDate 开始日期 * @param endDate 结束日期 * @author yanzy * @version 1.0 * @date 2021/6/3 13:36 */
        private static Map dateSplit(String startDate, String endDate) throws Exception { 
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
            List<Date> dateList = new ArrayList();
            Date start = simpleDateFormat.parse(startDate);
            Date end = simpleDateFormat.parse(endDate);
    
            Long spi = end.getTime() - start.getTime();
            Long step = spi / (24 * 60 * 60 * 1000);// 相隔天数
    
            dateList.add(start);
            for (int i = 1; i <= step; i++) { 
                // 比上一天加1
                dateList.add(new Date(dateList.get(i - 1).getTime() + (24 * 60 * 60 * 1000)));
            }
    
            Map<String, String> dateMap = new LinkedHashMap<>();
            for (Date date : dateList) { 
                String day = simpleDateFormat.format(date);
                dateMap.put(day, weekMap.get(LocalDate.parse(day).getDayOfWeek().toString()));
            }
            return dateMap;
        }
        
        private static Map<String, String> weekMap = new HashMap<String, String>() { 
            { 
                put("MONDAY", "周一");
                put("TUESDAY", "周二");
                put("WEDNESDAY", "周三");
                put("THURSDAY", "周四");
                put("FRIDAY", "周五");
                put("SATURDAY", "周六");
                put("SUNDAY", "周日");
            }
        };

**来测试下6月3号到6月10号之间的日期：**

System.out.println(dateSplit("2021-06-03", "2021-06-10"));

{ 
    2021-06-03 = 周四
    2021-06-04 = 周五
    2021-06-05 = 周六
    2021-06-06 = 周日
    2021-06-07 = 周一
    2021-06-08 = 周二
    2021-06-09 = 周三
    2021-06-10 = 周四
    }