如何获取一个指定日期的一天起始时间呢: hutool 中有自带的方法:
1
| implementation group: 'cn.hutool', name: 'hutool-all', version: '5.7.16'
|
# 获取当天的开始时间
1
| DateUtil.beginOfDay(new Date())
|
# 获取当天的结束时间
1
| DateUtil.endOfDay(new Date())
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
| SimpleDateFormat simpleDateFormat=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date beginOfDay = DateUtil.beginOfDay(new Date());
Calendar c = Calendar.getInstance();
c.setTime(beginOfDay);
c.add(Calendar.DAY_OF_MONTH,-1);
Date yesterBeginDay = c.getTime();
String a = simpleDateFormat.format(yesterBeginDay);
System.out.println(a);
输出结果：2021-12-15 00:00:00
Date endOfDay = DateUtil.endOfDay(new Date());
c.setTime(endOfDay);
c.add(Calendar.DAY_OF_MONTH,-1);
Date yesterEndDay = c.getTime();
String b = simpleDateFormat.format(yesterEndDay);
System.out.println(b);
输出结果：2021-12-15 23:59:59
|
