【JAVA】时间戳和日期时间互转
毫秒级时间戳例子：1736411640000
秒级时间戳例子：1736412480
毫秒级时间戳转日期时间：
如果是秒级，使用Instant.ofEpochSecond()
//Instant instant = Instant.ofEpochSecond()(Long.parseLong("1736412480"));
Instant instant = Instant.ofEpochMilli(Long.parseLong("1736411640000"));
ZonedDateTime zonedDateTime = ZonedDateTime.ofInstant(instant, ZoneId.systemDefault());
日期时间转毫秒级时间戳：
如果是秒级，使用Instant.getEpochSecond()
TIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
DateTimeFormatter formatter = DateTimeFormatter.ofPattern(TIME_FORMAT);
LocalDateTime nowTime = LocalDateTime.parse("2025-01-09 16:34:00", formatter);
ZoneId zoneId = ZoneId.of("Asia/Shanghai");
Instant instant = nowTime.atZone(zoneId).toInstant();
String timestamp = String.valueOf(instant.toEpochMilli());
//String timestamp = String.valueOf(instant.getEpochSecond());