不废话,直接上代码:
public class DateUtil {/*** 获取当月星期一到星期日的时间段* @param month* @return*/public static List<Map<String,Object>> getWeekList(Date month){List<Map<String,Object>> list = getAllWeek(formatDate(month,"yyyy-MM"));//移除不是以星期一开始的时间段Map<String, Object> map = list.get(0);Date startDate = parseDate(map.get("begin").toString(),null);Date endDate = parseDate(map.get("end").toString(),null);if (endDate.getTime() - startDate.getTime() < (6*60*60*24*1000)){list.remove(0);}//解决星期一到星期天跨月问题Map<String, Object> map2 = list.get(list.size() - 1);Date startDate2 = parseDate(Const.getStrValue(map,"begin"),null);Date endDate2 = parseDate(Const.getStrValue(map,"end"),null);if (endDate2.getTime() - startDate2.getTime() < (6*60*60*24*1000)){long baseDate = startDate2.getTime() + (6 * 60 * 60 * 24 * 1000);Date date = new Date(baseDate);map2.put("end",formatDate(date,null));}//移除本周之后的时间段Iterator<Map<String, Object>> iterator = list.iterator();while (iterator.hasNext()){if (new Date().getTime() - parseDate(Const.getStrValue(iterator.next(),"begin"), null).getTime() < 0){iterator.remove();}}return list;}public static List<Map<String,Object>> getAllWeek(String dateStr){Date date = parseDate(dateStr,"yyyy-MM");Calendar c = Calendar.getInstance();c.setTime(date);c.set(Calendar.DAY_OF_MONTH, 1);//一个月的第几天,也就是几号,比如值为1,就代表是1号int dayOfWeek = c.get(Calendar.DAY_OF_WEEK) - 1;//星期几,这个值在Calendar中有对应的常量比如,星期天就用:Calendar.SUNDAY,星期一就是Calendar.MONDAYdayOfWeek = dayOfWeek == 0 ? 7 : dayOfWeek;int days = c.getActualMaximum(Calendar.DAY_OF_MONTH);//当月天数List<Map<String,Object>> list = new ArrayList<>();HashMap<String, Object> map = null;for(int curDay = 1;curDay <= days;curDay++){c.set(Calendar.DAY_OF_MONTH, curDay);if(1 == curDay || 1 == dayOfWeek){map = new HashMap<>();map.put("begin",formatDate(c.getTime(),null));}if(dayOfWeek == 7 || curDay == days){map.put("end",formatDate(c.getTime(),null));list.add(map);dayOfWeek = 0;}dayOfWeek++;}return list;}public static String formatDate(Date date, String format){if(null == format || "".equals(format.trim())){format = "yyyy-MM-dd";}SimpleDateFormat dateFormat = new SimpleDateFormat(format);return dateFormat.format(date);}参数为当前日期, 调用getWeekList()方法就可以了,为了展示效果,下面是循环打印了一下:-12-02 ~ -12-08-12-09 ~ -12-15这个方式比较low,暂时性解决问题是可以的,其实很多处理在获取日期时就可以解决了, 如果你有更好的方式可以留言哦!
