Boto3: upload file from base64 to S3

问题

How can I directly upload a base64 encoded file to S3 with boto3?

object = s3.Object(BUCKET_NAME,email+"/"+save_name)
object.put(Body=base64.b64decode(file))

I tried to upload the base64 encoded file like this, but then the file is broken. Directly uploading the string without the base64 decoding also doesn't work.

Is there anything similar to set_contents_from_string() from boto2?

回答1:

I just fixed the problem and found out that the way of uploading was correct, but the base64 string was incorrect because it still contained the prefix data:image/jpeg;base64, - removing that prefix solved the problem.

回答2:

If you read the documentation thoughtfully on Object.put, you will see this

response = object.put(
    ACL='private'......,
    Body=b'bytes'|file,
    .....,

Body only accept file object or bytes, any other type will failed. base64.b64decode doesn't read file object automatically, you must read the data into the decode module.

# FIX 
object.put(Body=base64.b64decode(file.read()))  

As reminder, always post the stacktrace.

来源：https://stackoverflow.com/questions/47420886/boto3-upload-file-from-base64-to-s3