ListObjectsUnmarshaller.unmarshall method is removing the special character from the file name

[vikranthpatoju]

Describe the bug

I am trying to send the API request to S3 to get the list of files from a bucket.
Sample Endpoint - https://evidences-civil1.s3.amazonaws.com/. There are few files in the bucket having filenames with special characters (eg: Screenshot+1_1@3.jpeg).
As part of my solution, i am using the S3 SDK to retrieve the data and display them locally but when using this method as below, it does remove the special character from the file like this - Screenshot 1_1@3.jpeg.
ListObjectsUnmarshaller unmarshaller = new Unmarshallers.ListObjectsUnmarshaller(true);
return unmarshaller.unmarshall(inputStream);

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

Ideally ListObjectsUnmarshaller.unmarshall should return the same output without sanitizing it.

Current Behavior

There are no relavant errors as such

Reproduction Steps

ListObjectsUnmarshaller unmarshaller = new Unmarshallers.ListObjectsUnmarshaller(true);
return unmarshaller.unmarshall(inputStream);

Possible Solution

No response

Additional Information/Context

No response

AWS Java SDK version used

sdk 1.12.520

JDK version used

OpenJDK Runtime Environment Zulu21.30+16-SA

Operating System and version

x86_64 GNU/Linux

[debora-ito]

@vikranthpatoju even though ListObjectsUnmarshaller is public, we don't recommend using any marshaller in isolation outside the client. That's because some of the logic may be written in other stages of the request lifecycle.

In this case, when you call the ListObjectsV2 API, the output is expected:

        ListObjectsV2Result result  = s3Client.listObjectsV2(BUCKET);
        result.getObjectSummaries().stream().forEach(c -> System.out.println(c.getKey()));

        // output:
        // Screenshot+1_1@3.jpeg

Transferring this issue to the Java SDK v1 repository.