AmazonS3, how to check if the upload succeeded?

Question

I wrote a short test code in Java to upload a PDF file generated in memory. In this test code I just use a dummy byte array, but in the real use I will put a generated PDF (

Answer 1

I've looked the source code of AWS and debugged it and discovered the following:

• If MD5 is not provided it's calculated (works either for real files and InputStream)
• When the upload is finished md5 client side and server side are compared and if they differ an AmazonClientException is thrown. [line 1188 of AmazonS3Client 1.19]

In other words, to answer my own question, it's enough to listen for the exceptions because also the MD5 of the data uploaded is checked, so if there was a corruption an exception would be raised.

AmazonClientException and AmazonServiceException are unchecked exceptions, so it's important to remember to listen for them since the compiler won't force you to.