CODEWITHSUNDEEP
amazon-web-servicesamazon-s3aws-sdk
Arcones
Arcones

Reputation: 4712

Check metadata of S3 objects with AWS SDK for Java 2.x

I was not able to find a way to check the metadata fields of an S3 object such as the Content-Type or the Cache-Control with the AWS SDK for Java 2.x.

With the AWS SDK for Java 1.x it was as easy as this:

s3Client.getObjectMetadata("myBucket", "myfile.doc");

But I cannot see the analogous method for the newest version of the API.

Upvotes: 14

Views: 9586

Answers (2)

Nick
Nick

Reputation: 156

Also relevant, you can get additional metadata using getObjectAttributes, which for AWS S3 Java 2.x SDK is used in place of getObjectMetadata.

Upvotes: 1

Arcones
Arcones

Reputation: 4712

The solution is to use HeadObjectRequest and HeadObjectResponse:

HeadObjectRequest headObjectRequest = HeadObjectRequest.builder()
  .bucket(bucketName)
  .key(key)
  .build();

And then:

HeadObjectResponse headObjectResponse = s3Client.headObject(headObjectRequest);

System.out.println("This is what I need: " + headObjectResponse.contentType());

Upvotes: 20

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