名字正在想呢的博客

方式一： Calendar calendar = Calendar.getInstance(); System.out.println(calendar.get(Calendar.YEAR)); System.out.println(calendar.get(Calendar.MONTH+1)); System.out.println(calendar.get(Calendar.DATE))

根据系统时间获取时间区间：上月23 00:00:00-当月22 23:59:59 DateTime dateTime = new DateTime(2018,1,29); Integer year = dateTime.getYear(); Integer month = dateTime.getMonth(); Integer day = da