如何在S3存储桶中仅获取一个级别的对象? [英] How can I get only one level of objects in a S3 bucket?

问题描述

我只想列出存储桶中本身不是存储桶的对象.有没有一种方法可以解析出ListBucket的结果呢?

I want to list only the objects in a bucket that aren't buckets themselves. Is there a way of doing this short of parsing out the results of ListBucket?

推荐答案

不是存储桶本身的存储桶中的对象

objects in a bucket that aren't buckets themselves

存储桶不能包含其他存储桶.你是说文件夹吗?S3也没有文件夹的概念.

Buckets can't contain other buckets. Do you mean folders? S3 doesn't have a concept of folders either.

每个S3帐户可以有100个存储桶，每个存储桶可以包含无限数量的对象/文件.如果使用文件名中的/命名文件，则AWS GUI工具(例如AWS Console，BucketExplorer等)会将每个部分解释为虚拟文件夹.例如

You can have 100 buckets per S3 account and each bucket can contain an unlimited number of objects/files. If you name your files with /'s in the filename, the AWS GUI tools (eg AWS Console, BucketExplorer etc) will interpret each section as a virtual folder. eg

名为 folder1/folder2/myfile.jpg 的文件将作为具有该名称的平面"文件存储在S3中，但是在GUI工具中，它看起来就像是名为的文件一样> myfile.jpg 在 folder1/folder2 中向下2个子文件夹.

A file named folder1/folder2/myfile.jpg will be stored in S3 as a 'flat' file with that name, but in the GUI tools it will appear as though a file named myfile.jpg is 2 subfolders down in folder1/folder2.

您可以使用 prefix 和 delimiter 参数来解析

You can use the prefix and delimiter parameters to parse the results of a GET Bucket (List Objects) call. The same options are available in any of the SDKs too.

更新以回答评论.

假设我们的S3存储桶如下所示:

Assuming our S3 bucket looks like this:

mybucket
   folder1
      file1.txt
      file2.txt
      folder2
          file3.txt
          file4.txt
      folder3
          file5.txt
          file6.txt

使用 prefix ="folder1/" 将返回所有6个文件: file1.txt 至 file6.txt .

使用 前缀="folder1/" 和 定界符="/" 将返回2个文件:

Using a prefix = "folder1/" and a delimiter = "/" would return 2 files:

    file1.txt
    file2.txt

和包含的响应的 CommonPrefixes 集合

    folder1/folder2/
    folder1/folder3/

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