需求:需要获取当前时间的下一个整点时间,如13:23,获取的下一个时间为 13:25
代码:
/**
* 获取下一个分钟值以0或者5结尾的时间点(单位:毫秒)
* @return
*/
public static long getNextMillisEndWithMinute0or5(Date baseTime) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(baseTime);
int minute = calendar.get(Calendar.MINUTE);
if (minute < 55) {
System.out.println(minute%10 + "===" + (5 - minute%10) + "===" + (10 - minute%10));
int add = minute%10 < 5 ? 5 - minute%10 : 10 - minute%10;
calendar.add(Calendar.MINUTE, add);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
return calendar.getTime().getTime();
}
// 当前时间+1小时
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
calendar.add(Calendar.HOUR_OF_DAY, 1);
return calendar.getTime().getTime();
}
测试代码:
@Test
public void timeEndWithMinute0or5() throws ParseException {
final String format = "yyyy-MM-dd HH:mm:ss";
DateFormat dF = new SimpleDateFormat(format);
long next = getNextMillisEndWithMinute0or5(new Date());
System.out.println(DateFormatUtils.format(next, format));
long test1 = getNextMillisEndWithMinute0or5(dF.parse("2020-07-10 11:00:00"));
Assert.assertEquals("2020-07-10 11:05:00", DateFormatUtils.format(test1, "yyyy-MM-dd HH:mm:ss"));
long test2 = getNextMillisEndWithMinute0or5(dF.parse("2020-07-10 11:35:00"));
Assert.assertEquals("2020-07-10 11:40:00", DateFormatUtils.format(test2, "yyyy-MM-dd HH:mm:ss"));
// 跨小时
long test3 = getNextMillisEndWithMinute0or5(dF.parse("2020-07-10 12:59:59"));
Assert.assertEquals("2020-07-10 13:00:00", DateFormatUtils.format(test3, "yyyy-MM-dd HH:mm:ss"));
// 跨天
long test4 = getNextMillisEndWithMinute0or5(dF.parse("2020-07-10 23:59:59"));
Assert.assertEquals("2020-07-11 00:00:00", DateFormatUtils.format(test4, "yyyy-MM-dd HH:mm:ss"));
// 跨闰月
long test5 = getNextMillisEndWithMinute0or5(dF.parse("2020-02-29 23:55:59"));
Assert.assertEquals("2020-03-01 00:00:00", DateFormatUtils.format(test5, "yyyy-MM-dd HH:mm:ss"));
// 跨闰年
long test6 = getNextMillisEndWithMinute0or5(dF.parse("2019-12-31 23:55:59"));
Assert.assertEquals("2020-01-01 00:00:00", DateFormatUtils.format(test6, "yyyy-MM-dd HH:mm:ss"));
}
参考文章:java计算下一个整5分钟时间点 - 极客子羽 - 博客园