如何将内容类型应用于 Amazon S3 对象

Question

使用CLI（不是s3cmd）管理Amazon S3，如何选择扩展名为.pdf的所有对象并应用内容类型application/pdf？

这是我目前想出的：

aws s3 sync s3://${BUCKET_NAME} s3://${BUCKET_NAME}
--dryrun
--exclude '*'
--include '*.pdf'
--no-guess-mime-type
--content-type application/pdf

使用--debug 参数我发现了这个错误：

An error occurred (InvalidRequest) when calling the CopyObject operation:
This copy request is illegal because it is trying to copy an object to itself
without changing the object's metadata, storage class,
website redirect location or encryption attributes.

Answer 1

尝试直接更改元数据：

aws s3 sync s3://${BUCKET_NAME} s3://${BUCKET_NAME}
--dryrun
--exclude '*'
--include '*.pdf'
--no-guess-mime-type
--metadata Content-Type=application/pdf