java根据开始时间结束时间计算中间间隔日期的实例代码
人气:0具体代码如下所述:
import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.Date; import java.util.List; public class Test { public static List<String> findDates(String stime, String etime) throws ParseException { List<String> allDate = new ArrayList(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Date dBegin = sdf.parse(stime); Date dEnd = sdf.parse(etime); allDate.add(sdf.format(dBegin)); Calendar calBegin = Calendar.getInstance(); // 使用给定的 Date 设置此 Calendar 的时间 calBegin.setTime(dBegin); Calendar calEnd = Calendar.getInstance(); // 使用给定的 Date 设置此 Calendar 的时间 calEnd.setTime(dEnd); // 测试此日期是否在指定日期之后 while (dEnd.after(calBegin.getTime())) { // 根据日历的规则,为给定的日历字段添加或减去指定的时间量 calBegin.add(Calendar.DAY_OF_MONTH, 1); allDate.add(sdf.format(calBegin.getTime())); } return allDate; } public static void main(String[] args) { //测试数据 String stime = "2019-05-01"; String etime = "2019-05-05"; //集合中包含2019-05-01/2019-05-05,不需要可去除 List<String> list = new ArrayList<>(); try { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); long s = Long.valueOf(sdf.parse(stime).getTime()); long e = Long.valueOf(sdf.parse(etime).getTime()); //只有结束时间大于开始时间时才进行查询 if(s<e) { list = findDates(stime, etime); } } catch (ParseException e) { e.printStackTrace(); } for(String time : list) { System.out.println(time); } System.out.println("间隔天数:" + list.size()); } }
ps:下面看下java根据开始时间和结束时间,计算中间天数,并打印
import java.text.SimpleDateFormat; import java.util.Date; public class Calcdate { static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); static SimpleDateFormat ymd = new SimpleDateFormat("yyyy-MM-dd"); public static void main(String[] args)throws Exception{ Date beginTime = sdf.parse("2015-04-23 12:32:44"); // Date endTime = sdf.parse("2015-04-23 14:56:44"); Date endTime = sdf.parse("2015-04-29 14:56:44"); long diff = (endTime.getTime() - beginTime.getTime()) / (86400 * 1000); System.out.println("diff = " + diff); Date sb = null; Date se = null; if(diff == 0){ sb = beginTime; se = endTime; String ss = String.format("%d> Sb=%s, Se=%s", 1, Coder.DateTimeToStr(sb), Coder.DateTimeToStr(se)); System.out.println(ss); }else { int i = 0; while (i <= diff) { if (i == 0) { sb = beginTime; se = sdf.parse(ymd.format(sb) + " 23:59:59"); } else if (i == diff) { sb = sdf.parse(ymd.format(endTime) + " 00:00:00"); se = endTime; } else { se = new Date(beginTime.getTime() + i * 24 * 60 * 60 * 1000); sb = sdf.parse(ymd.format(se) + " 00:00:00"); se = sdf.parse(ymd.format(se) + " 23:59:59"); } String ss = String.format("%d> Sb=%s, Se=%s", i, Coder.DateTimeToStr(sb), Coder.DateTimeToStr(se)); System.out.println(ss); i++; } } } }
diff = 6 0> Sb=2015-04-23 12:32:44, Se=2015-04-23 23:59:59 1> Sb=2015-04-24 00:00:00, Se=2015-04-24 23:59:59 2> Sb=2015-04-25 00:00:00, Se=2015-04-25 23:59:59 3> Sb=2015-04-26 00:00:00, Se=2015-04-26 23:59:59 4> Sb=2015-04-27 00:00:00, Se=2015-04-27 23:59:59 5> Sb=2015-04-28 00:00:00, Se=2015-04-28 23:59:59 6> Sb=2015-04-29 00:00:00, Se=2015-04-29 14:56:44
总结
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