Java8时间转换

===java8中时间的各种转换(LocalDateTime)===

 

1.将LocalDateTime转为自定义的时间格式的字符串

public static String getDateTimeAsString(LocalDateTime localDateTime, String format) {
  DateTimeFormatter formatter = DateTimeFormatter.ofPattern(format);
  return localDateTime.format(formatter);
}

 


2.将long类型的timestamp转为LocalDateTime

public static LocalDateTime getDateTimeOfTimestamp(long timestamp) {
  Instant instant = Instant.ofEpochMilli(timestamp);
  ZoneId zone = ZoneId.systemDefault();
  return LocalDateTime.ofInstant(instant, zone);
}

 


3.将LocalDateTime转为long类型的timestamp

public static long getTimestampOfDateTime(LocalDateTime localDateTime) {
  ZoneId zone = ZoneId.systemDefault();
  Instant instant = localDateTime.atZone(zone).toInstant();
  return instant.toEpochMilli();
}

 


4.将某时间字符串转为自定义时间格式的LocalDateTime

public static LocalDateTime parseStringToDateTime(String time, String format) {
  DateTimeFormatter df = DateTimeFormatter.ofPattern(format);
  return LocalDateTime.parse(time, df);
}

 


链接:https://blog.csdn.net/wsywb111/article/details/79815481

posted @ 2019-08-08 11:17  brucegan  阅读(2360)  评论(0编辑  收藏  举报