- 前言
- 一、相关方法使用
- 二、测试
前言
jdk8新特性 LocalDateTime是线程安全的，其内置的方法更多，更好用
借鉴地址【https://mp.weixin.qq.com/s/Dd_7yUh3lq3TqE2cjsYXv】
public static final int INTERVAL = 3;
public static final ZoneOffset ZONE_OFFSET = ZoneOffset.of("+8");
public static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
public static long getTimeStamp(LocalDateTime now) {
return now.toEpochSecond(ZONE_OFFSET);
}
public static long getStartTimestamp(LocalDateTime now) {
return now.minusMinutes(INTERVAL).toEpochSecond(ZONE_OFFSET);
}
public static long getCurrentStartTimestamp(LocalDateTime now) {
return LocalDateTime.of(now.getYear(), now.getMonth(), now.getDayOfMonth(), LocalDateTime.MIN.getHour(),
LocalDateTime.MIN.getMinute(), LocalDateTime.MIN.getSecond()).toEpochSecond(ZONE_OFFSET);
}
public static long getCurrentEndTimestamp(LocalDateTime now) {
return LocalDateTime.of(now.getYear(), now.getMonth(), now.getDayOfMonth(),
LocalDateTime.MAX.getHour(), LocalDateTime.MAX.getMinute(), LocalDateTime.MAX.getSecond())
.toEpochSecond(ZONE_OFFSET);
}
public static LocalDateTime getCurrentStartLocalDateTime(LocalDateTime now) {
LocalDate localDate = now.toLocalDate();
return localDate.atTime(LocalTime.MIN.getHour(), LocalTime.MIN.getMinute(), LocalTime.MIN.getSecond());
}
public static LocalDateTime getCurrentEndLocalDateTime(LocalDateTime now) {
LocalDate localDate = now.toLocalDate();
return localDate.atTime(LocalTime.MAX.getHour(), LocalTime.MAX.getMinute(), LocalTime.MAX.getSecond());
}
// -------------------------------------------- 转换 --------------------------------------------
public static java.util.Date parseDateByDateStr(String dateStr) {
return java.sql.Date.from(LocalDateTime.parse(dateStr, FORMATTER).toInstant(ZONE_OFFSET));
}
public static LocalDateTime parseLocalDateTimeByDate(Date date) {
// Java Date类的 toInstant()方法将该日期对象转换为Instant，然后返回Instant表示与日期对象在tim线上的同一点
Instant instant = date.toInstant();
return LocalDateTime.ofInstant(instant, ZONE_OFFSET);
}
public static LocalDateTime parseLocalDateTimeByDateStr(String dateStr) {
return LocalDateTime.parse(dateStr, FORMATTER);
}
public static String parseDateStrByLocalDateTime(LocalDateTime localDateTime) {
return localDateTime.format(FORMATTER);
}
// ----------------------------------比较大小-----------------------------------------
public static int comparisonTimeByDateStr(String dateStr1, String dateStr2) {
LocalDateTime localDateTime1 = parseLocalDateTimeByDateStr(dateStr1);
LocalDateTime localDateTime2 = parseLocalDateTimeByDateStr(dateStr2);
return comparisonTimeByLocalDateTime(localDateTime1, localDateTime2);
}
public static int comparisonTimeByDate(Date date1, Date date2) {
LocalDateTime localDateTime1 = parseLocalDateTimeByDate(date1);
LocalDateTime localDateTime2 = parseLocalDateTimeByDate(date2);
return comparisonTimeByLocalDateTime(localDateTime1, localDateTime2);
}
public static int comparisonTimeByLocalDateTime(LocalDateTime localDateTime1, LocalDateTime localDateTime2) {
return localDateTime1.isEqual(localDateTime2) ? 0 : localDateTime1.isBefore(localDateTime2) ? -1 : 1;
}
// -------------------------------------判断日期属于哪天范畴-------------------------------------
public static int isYesterday(LocalDateTime localDateTime) {
// 当前时间
LocalDateTime today = LocalDateTime.now();
// 今天开始
LocalDateTime todayStart = getCurrentStartLocalDateTime(today);
// 今天结束
LocalDateTime todayEnd = getCurrentEndLocalDateTime(today);
// 昨天
LocalDateTime yesterday = today.plusDays(-1);
// 昨天开始
LocalDateTime yesterdayStart = getCurrentStartLocalDateTime(yesterday);
// 昨天结束
LocalDateTime yesterdayEnd = getCurrentEndLocalDateTime(yesterday);
// 昨天以前
if (localDateTime.isBefore(yesterdayStart)) {
return -1;
}
// 昨天范畴
if (localDateTime.isAfter(yesterdayStart) && localDateTime.isBefore(yesterdayEnd)) {
return 0;
}
// 今天范畴
if (localDateTime.isAfter(todayStart) && localDateTime.isBefore(todayEnd)) {
return 1;
}
// 今天以后
return 2;
}
public static Duration getDateDurationByLocalDateTime(LocalDateTime localDateTime1, LocalDateTime localDateTime2) {
return Duration.between(localDateTime1, localDateTime2);
}
public static Duration getDateDurationByLocalDateStr(String dateStr1, String dateStr2) {
LocalDateTime localDateTime1 = parseLocalDateTimeByDateStr(dateStr1);
LocalDateTime localDateTime2 = parseLocalDateTimeByDateStr(dateStr2);
return Duration.between(localDateTime1, localDateTime2);
}
public static Duration getDateDurationByLocalDate(Date date1, Date date2) {
LocalDateTime localDateTime1 = parseLocalDateTimeByDate(date1);
LocalDateTime localDateTime2 = parseLocalDateTimeByDate(date2);
return Duration.between(localDateTime1, localDateTime2);
}
二、测试
@Test
public void getTimeStamp() {
LocalDateTime now = LocalDateTime.now();
long timeStamp = getTimeStamp(now);
// 1635322835(秒)
System.out.println(timeStamp);
}
@Test
public void getStartTimestamp() {
LocalDateTime now = LocalDateTime.now();
//-180 倒退180秒
System.out.println(getStartTimestamp(now) - getTimeStamp(now));
}
@Test
public void getOneDayDifference() {
LocalDateTime now = LocalDateTime.now();
long todayStartTimestamp = getCurrentStartTimestamp(now);
System.out.println(todayStartTimestamp);// 1635264000
long todayEndTimestamp = getCurrentEndTimestamp(now);
System.out.println(todayEndTimestamp);// 1635350399
System.out.println(todayEndTimestamp - todayStartTimestamp);// 86399
System.out.println(60 * 60 * 24);// 86400
}
@Test
public void parseDate() {
Instant instant = Instant.now();
System.out.println(instant);// 2021-10-27T09:10:27.506Z
LocalDateTime now = LocalDateTime.ofInstant(instant, ZONE_OFFSET);
String format = parseDateStrByLocalDateTime(now);
System.out.println(format);// 2021-10-27 17:10:27
Date date = parseDateByDateStr(format);
System.out.println(date);// Wed Oct 27 17:10:27 CST 2021
LocalDateTime localDateTime = parseLocalDateTimeByDate(date);
System.out.println(localDateTime);// 2021-10-27T17:10:27
localDateTime = parseLocalDateTimeByDateStr(format);
System.out.println(localDateTime);// 2021-10-27T17:10:27
}
@Test
public void 调整时间() {
LocalDateTime now = LocalDateTime.now();
LocalDateTime localDateTime = now.plusHours(1);
LocalDateTime localDateTime1 = now.plusDays(1);
LocalDateTime localDateTime2 = now.plusMinutes(-1);
LocalDateTime localDateTime3 = now.plusSeconds(11);
LocalDateTime localDateTime4 = now.plusMonths(1);
LocalDateTime localDateTime5 = now.plusWeeks(-2);
LocalDateTime localDateTime6 = now.plusNanos(1);
}
@Test
public void 时间比较() {
String past1 = "2019-06-26 19:00:00";
String past2 = "2019-06-26 19:00:01";
LocalDateTime now1 = LocalDateTime.now();
LocalDateTime now2 = LocalDateTime.now().plusSeconds(1);
System.out.println(now1);
System.out.println(now2);
Date date1 = parseDateByDateStr(past1);
Date date2 = parseDateByDateStr(past2);
System.out.println(date1);
System.out.println(date2);
System.out.println(comparisonTimeByDateStr(past1, past1));
System.out.println(comparisonTimeByDateStr(past1, past2));
System.out.println(comparisonTimeByDateStr(past2, past1));
System.out.println(comparisonTimeByLocalDateTime(now1, now1));
System.out.println(comparisonTimeByLocalDateTime(now1, now2));
System.out.println(comparisonTimeByLocalDateTime(now2, now1));
System.out.println(comparisonTimeByDate(date1, date1));
System.out.println(comparisonTimeByDate(date1, date2));
System.out.println(comparisonTimeByDate(date2, date1));
}
@Test
public void getDateDurationByLocalDateTime() {
LocalDateTime now1 = LocalDateTime.now();
LocalDateTime now2 = LocalDateTime.now().plusDays(1);
Duration duration = getDateDurationByLocalDateTime(now1, now2);
System.out.println(duration.toDays());// 1
System.out.println(duration.toHours());// 24
System.out.println(duration.toMinutes());// 1440
System.out.println(duration.toMillis());// 86400000
System.out.println(duration.getSeconds());// 86400
}
@Test
public void test() {
LocalDateTime now = LocalDateTime.now();
long mills = now.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli();
System.out.println(mills);
System.out.println(System.currentTimeMillis());
System.out.println(System.currentTimeMillis() > mills);
}
