为什么 LocalDateTime 没有区域？
Why does a LocalDateTime not have a zone?
我不明白这一点 - 根据定义，LocalDateTime 在我的默认时区内 - 对吗？那么为什么我需要提供一个区域来从 LocalDateTime 转换为 ZonedDateTime？
A date-time without a time-zone in the ISO-8601 calendar system, such as 2007-12-03T10:15:30.
因为起的不是特别好。它只是一个没有时区的 DateTime 和一个 "clock" 时间，按照：
This class does not store or represent a time-zone. Instead, it is a description of the date, as used for birthdays, combined with the local time as seen on a wall clock. It cannot represent an instant on the time-line without additional information such as an offset or time-zone.
因此，要转换为 ZonedDateTime，您需要提供上下文。
来源：https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html
我不明白这一点 - 根据定义，LocalDateTime 在我的默认时区内 - 对吗？那么为什么我需要提供一个区域来从 LocalDateTime 转换为 ZonedDateTime？
A date-time without a time-zone in the ISO-8601 calendar system, such as 2007-12-03T10:15:30.
因为起的不是特别好。它只是一个没有时区的 DateTime 和一个 "clock" 时间，按照：
This class does not store or represent a time-zone. Instead, it is a description of the date, as used for birthdays, combined with the local time as seen on a wall clock. It cannot represent an instant on the time-line without additional information such as an offset or time-zone.
因此，要转换为 ZonedDateTime，您需要提供上下文。
来源：https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html