LocalDateTime 时间类

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时间的更新切换，直接上代码，以前的方法不好用，会出现显示不正确，当然如果你没有设置今天，昨天，前天的话，方法就可以不用这么麻烦，就是日期计算的问题

String startTime ="2016-11-13 23:59";
String endtime = "2016-11-16 00:00";
DateTimeFormatter sf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
LocalDateTime startLocalDate = LocalDateTime.parse(startTime, sf);
LocalDateTime mid = startLocalDate.plusDays(1).withHour(0).withMinute(0).withSecond(0).withNano(0);
LocalDateTime mid1 = startLocalDate.plusDays(2).withHour(0).withMinute(0).withSecond(0).withNano(0);
LocalDateTime mid2 = startLocalDate.plusDays(3).withHour(0).withMinute(0).withSecond(0).withNano(0);
LocalDateTime endLocalDate = LocalDateTime.parse(endtime, sf);
long sec = ChronoUnit.SECONDS.between(startLocalDate, endLocalDate);
long sec1 = ChronoUnit.SECONDS.between(startLocalDate, mid);
long sec2= ChronoUnit.SECONDS.between(startLocalDate, mid1);
long sec3 = ChronoUnit.SECONDS.between(startLocalDate, mid2);
if(sec<sec1){
if(sec<60){
System.out.println("刚刚");
}else{
System.out.println("今天"+startLocalDate.toString().substring(startLocalDate.toString().indexOf("T")+1));
}
}
if(sec>=sec1 && sec<sec2){
System.out.println("昨天"+startLocalDate.toString().substring(startLocalDate.toString().indexOf("T")+1));
}
if(sec>=sec2 && sec<sec3){
System.out.println("前天"+startLocalDate.toString().substring(startLocalDate.toString().indexOf("T")+1));
}
if(sec>=sec3){
System.out.println(startLocalDate.toString().replace("T", " "));
}

}

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