Qfyilyi

I need to call the withCannedAcl method. It turns images as a public read ENUM, so when the book images are registered in the Bucket, they will have a readable public visibility and all users will be able to view the images. How can I insert the method into my filesaver file?

Here the withCannedAcl method that i found:

.withCannedAcl(CannedAccessControlList.PublicRead));

this is the filesaver.java where i have to insert that method (could be inside the s3.putObject():?). I tried but it didnt works.

@RequestScoped

public class FileSaver {



private static final String CONTENT_DISPOSITION = "content-disposition";



private static final String FILENAME_KEY = "filename=";



@Inject

private AmazonS3Client s3;    



public String write(String baseFolder, Part multipartFile) {

    AmazonS3Client s3 = client();

    String fileName = extractFilename(multipartFile.getHeader(CONTENT_DISPOSITION));

    try {

        s3.putObject("superkovalev", fileName,

                multipartFile.getInputStream(),                    

                new ObjectMetadata());            

                return "https://s3.amazonaws.com/xxxxxxxxxxxxxx/"                            

                +fileName;

    } catch (AmazonClientException | IOException e) {

        throw new RuntimeException(e);

    }

}



 private AmazonS3Client client() {

    AWSCredentials credentials = new BasicAWSCredentials("xxxxxxxx ",

            xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

    AmazonS3Client newClient = new AmazonS3Client(credentials, new 

     ClientConfiguration());

    newClient.setS3ClientOptions(new 

     S3ClientOptions().withPathStyleAccess(true));

    return newClient;

   }



  private String extractFilename(String contentDisposition) {



    if (contentDisposition == null) {

        return null;

    }

    int startIndex = contentDisposition.indexOf(FILENAME_KEY);

    if (startIndex == -1) {

        return null;

    }

    String filename = contentDisposition.substring(startIndex

            + FILENAME_KEY.length());

    if (filename.startsWith(""")) {

        int endIndex = filename.indexOf(""", 1);

        if (endIndex != -1) {

            return filename.substring(1, endIndex);

        }

    } else {

        int endIndex = filename.indexOf(";");

        if (endIndex != -1) {

            return filename.substring(0, endIndex);

        }

    }

    return filename;

}



public AmazonS3Client getS3() {

    return s3;

}



public void setS3(AmazonS3Client s3) {

    this.s3 = s3;

}



 }

This is the answer for the question:

Policy bucket_policy = new Policy().withStatements(

new Statement(Statement.Effect.Allow)

    .withPrincipals(Principal.AllUsers)

    .withActions(S3Actions.GetObject)

    .withResources(new Resource(

        "arn:aws:s3:::" + bucket_name + "/*")));

https://docs.aws.amazon.com/pt_br/sdk-for-java/v1/developer-guide/examples-s3-bucket-policies.html