如何在 ruby on rails 中使用 AWS-SDK gem 列出 s3 文件夹中的所有文件
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/19392931/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to list all files in an s3 folder using AWS-SDK gem in ruby on rails
提问by user648198
I wanted to show a list of all files in an s3 folder so I can get all the last modified dates so I can determine what files has been changed.
我想显示 s3 文件夹中所有文件的列表，以便我可以获得所有上次修改日期，以便确定哪些文件已更改。
I tried using objects.with_prefix('Folder1') it give me a full list but also contain Folder1.1 key
我尝试使用 objects.with_prefix('Folder1') 它给了我一个完整的列表，但也包含 Folder1.1 键
I don't know if i needed to use delimiter but I couldn't find anything how to use delimiter in aws sdk.
我不知道我是否需要使用分隔符，但我找不到任何如何在 aws sdk 中使用分隔符的信息。
Thanks so much in advance!
非常感谢！
I'm using 'aws-sdk' gem
我正在使用“aws-sdk” gem
Here is my bucket structure -Folder1 -File1 -File2 -Folder.1.1
这是我的存储桶结构 -Folder1 -File1 -File2 -Folder.1.1
Here is my code
这是我的代码
bucket = s3.buckets[bucket_name]
data = bucket.objects.with_prefix('Folder1/')
data.each do |object|
puts "#{object.key}\t#{object.last_modified}";
end
回答by kebomix
回答by Mohit Jain
You can use this small piece of code for getting list of files for a specific folder.
您可以使用这一小段代码获取特定文件夹的文件列表。
s3 = Aws::S3::Resource.new(region: 'ap-southeast-1', access_key_id: ENV['AWS_ACCESS_KEY_ID'], secret_access_key: ENV['AWS_SECRET_ACCESS_KEY'] )
data_files = s3.bucket(bucket_name).objects(prefix: 'prefix/', delimiter: 'delimiter').collect(&:key)
回答by 0x539
https://docs.aws.amazon.com/sdk-for-ruby/v3/api/Aws/S3/Client.html#list_objects_v2-instance_method
https://docs.aws.amazon.com/sdk-for-ruby/v3/api/Aws/S3/Client.html#list_objects_v2-instance_method
SDK V3 has the prefix option for client!
SDK V3 有客户端前缀选项！
resp = client.list_objects_v2({
bucket: "BucketName", # required
prefix: "FolderName",
})
resp = client.list_objects_v2({
bucket: "BucketName", # required
prefix: "FolderName",
})
回答by Adilbiy Kanzitdinov
Currently I am also stuck with this problem. So far solution is to fetch all the objects and to filter them later:
目前我也被这个问题困住了。到目前为止的解决方案是获取所有对象并稍后过滤它们：
data = bucket.objects(bucketname, prefix: 'Folder1')
data_without_folders = data.select { |obj| !(obj.key =~ /\/$/) }
For delimiter, you just have to pass it in bucket.objects call like:
对于分隔符，您只需将其传递到 bucket.objects 调用中，例如：
data = bucket.objects(bucketname, prefix: 'prefix', delimiter: 'delimiter')
If better solution is available, I will let you know.
如果有更好的解决方案，我会让你知道。
