c# - AWS S3 - ListObjects 返回不完整的目录列表

Question

我使用没有任何定界符的 ListObject 函数，结果我得到了类似的东西:

/BF
/BF/FTP
/BF/MUSIC/LIBRARY/AUDITION/BEAKING%20EARLY.MP3
/BF/VIDEO/
/BF/VIDEO/Example
/BF/VIDEO/Example/test.mp4

问题出在音乐文件夹中。为什么 ListObjects 不返回键为“/BF/MUSIC”的 S3Object。有很多 S3Objects 有同样的问题。为什么会这样？

Answer 1

原因是 S3 实际上具有扁平结构。没有文件夹，但它只识别正斜杠，因此将具有相同前缀的文件夹分组在同一文件夹下。因此，在您的示例中，“/BF/MUSIC”只是另一个对象，而不是一个空文件夹。

In Amazon S3, buckets and objects are the primary resources, where objects are stored in buckets. Amazon S3 has a flat structure with no hierarchy like you would see in a typical file system. However, for the sake of organizational simplicity, the Amazon S3 console supports the folder concept as a means of grouping objects. Amazon S3 does this by using key name prefixes for objects.

来源:AWS Documentation: Working with Folders