java获取月份最后一天Calendar
@Test public void get_last_day_of_month(){ //获取2020-02的最后一天 String dateString = "2020-02" ;
//获取年月 int year = Integer.parseInt(dateString.split("-")[0]); int month = Integer.parseInt(dateString.split("-")[1]);
//获取 日历 对象 Calendar calendar = Calendar.getInstance() ; //填充年 calendar.set(Calendar.YEAR , year);
//填充月 calenda里的月份是0-11 calendar.set(Calendar.MONTH , month - 1);
//获取2020-02日历的最大字段,也就是最大多少天 int maxDay = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
//填充 最后一天 calendar.set(Calendar.DAY_OF_MONTH , maxDay); String date = DateFormatUtils.format(calendar.getTimeInMillis(), "yyyy-MM-dd"); log.info(String.valueOf(date));//[main] INFO com.lyg.rest.DateTimeTest - 2020-02-29
//在上面基础上继续获取最后一天的最后 1s //calendar.set(Calendar.HOUR , 23);//下面的log.info会打印出 2020-03-01 11:59:59,因为Calendar.HOUR是12小时制 calendar.set(Calendar.DAY_OF_MONTH,23);//此时才是24h制 calendar.set(Calendar.MINUTE , 59); calendar.set(Calendar.SECOND , 59);
String dateTime = DateFormatUtils.format(calendar.getTimeInMillis(), "yyyy-MM-dd HH:mm:ss"); log.info(dateTime); } |
List<Jurisdiction> filterJurisdictions = administrativeAreas.stream()
.filter(a -> a.getAdministrativeAreaCode().equals(queryDTO.getAdministrativeCode()))
.collect(Collectors.toList()).get(0).getJurisdictions();