How do you make an S3 object public via the aws Java SDK?

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How do you make an S3 object public via the AWS Java SDK?

Specifically, what API methods via the Java AWS SDK can be used to make an Object public when its uploaded?

Found the answer in an amazon aws forum.

return s3Client.putObject(
   new PutObjectRequest(bucketName, objectKey, inputStream, metadata)
      .withCannedAcl(CannedAccessControlList.PublicRead));

The answer being

.withCannedAcl(CannedAccessControlList.PublicRead)

How do you make an S3 object public via the aws Java SDK , How do you make an S3 object public via the AWS Java SDK? Specifically, what API methods via used to make an Object public when it's� Upload an object Using the AWS SDK for Java The following example creates two objects. The first object has a text string as data, and the second object is a file.

An alternative approach which allows for more finegrained control of who exactly is allowed to view the object (all users or authenticated users only):

    PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, keyName, image);
    AccessControlList acl = new AccessControlList();
    acl.grantPermission(GroupGrantee.AllUsers, Permission.Read); //all users or authenticated
    putObjectRequest.setAccessControlList(acl);
    s3client.putObject(putObjectRequest);

How do you make S3 Object public via Java SDK?, Upload objects that are up to 5 GB to Amazon S3 in a single operation with the AWS SDK for Java. How do you make an S3 object public via the AWS Java SDK? Specifically, what API methods via the Java AWS SDK can be used to make an Object public when it's uploaded?

s3client.setObjectAcl("bucketName[/subDirectory]", fileName, CannedAccessControlList.PublicRead);
URL url = s3client.getUrl("bucketName[/subDirectory]", fileName);
String sharableLink = url.toExternalForm();

source

Upload an object Using the AWS SDK for Java, When you download an object through the AWS SDK for Java, Amazon S3 InputStreamReader; public class GetObject2 { public static void main(String[] args )� When you download an object through the AWS SDK for Java, Amazon S3 returns all of the object's metadata and an input stream from which to read the object's contents. To retrieve an object, you do the following:

Get an object Using the AWS SDK for Java, objects for fine-grained control over your Amazon S3 resources. Note. These code examples assume that you understand the material in Using the AWS SDK � Managing object lifecycles using the AWS SDK for Java You can use the AWS SDK for Java to manage the S3 Lifecycle configuration of a bucket. For more information about managing S3 Lifecycle configuration, see Object lifecycle management .

Managing Amazon S3 Access Permissions for Buckets and Objects , In Amazon S3, add permission grants to a new resource ACL using the AWS SDK for Java. The AWS SDK for Java gives you the option of using a high-level or low-level API. Low-Level API The low-level APIs correspond to the underlying Amazon S3 REST operations, such as create, update, and delete operations that apply to buckets and objects.

Managing ACLs Using the AWS SDK for Java, locally to get all the examples to build and run. Topics. Creating, Listing, and Deleting Amazon S3 Buckets � Performing Operations on Amazon S3 Objects� Remember that S3 has a very simple structure – each bucket can store any number of objects which can be accessed using either a SOAP interface or an REST-style API. Going forward, we'll use the AWS SDK for Java to create, list, and delete S3 buckets. We'll also upload, list, download, copy, move, rename and delete objects within these buckets. 2.

Comments
  • If you are using transfer managers, this solution also works. Simply replace s3Client.putObject( with TransferManager.upload(
  • Unfortunately, it seems that with TransferUtility the Android SDK does not has this feature: github.com/aws/aws-sdk-android/issues/63
  • When using TransferManager the following works: Upload upload = tm.upload( new PutObjectRequest(bucketName, key, file, metadata) .withCannedAcl(CannedAccessControlList.PublicRead));