如何使用 Java 将文件夹上传到 AWS S3？

Question

I checked the document and the code examples. However, I just found the way to upload a file. If I set the file path be a folder， the program would return exception:

Exception in thread "main" com.amazonaws.SdkClientException: Unable to calculate MD5 hash: /path/to/folder (Is a directory)

I noticed that C# code example has a way to upload folder, but Java doesn't. Does it mean Java cannot upload folder to AWS S3?

Answer 1

The Amazon S3 API only supports uploading one object per API call. There is no API call to upload a folder.

Your code would need to loop through each file in the folder and upload them individually.