Google Drive File etag [英] Google Drive File etag

问题描述

文件资源的etag是如何工作的？它看起来即使没有对文件进行任何更改也会发生变化。

有没有办法获得校验和或仅在更新文件时才更改？

感谢您的帮助！

解决方案

文件的Etag也当文件的元数据发生变化时更改。如果您只想监视文件内容的更改，则可以使用 md5Checksum 字段替代：

https://developers.google.com/drive/v2/reference/files#resource

How does the etag of a File Resource works? It looks like it's changing even if no change is made on the file.

Is there a way to get a checksum or something that change only when the file is updated?

Thanks for your help!

解决方案

The Etag of a file also changes when the file's metadata changes. If you want to only monitor changes to the file's content, you can use the md5Checksum field instead:

https://developers.google.com/drive/v2/reference/files#resource

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