CODEWITHSUNDEEP
amazon-web-servicesamazon-s3aws-sdk
madalina
madalina

Reputation: 137

AWS SDK check if object exists

In AmazonS3Client there is a method doesObjectExist(String bucketName, String objectName). This method throws an com.amazonaws.services.s3.model.AmazonS3Exception: Bad Request (Service: Amazon S3; Status Code: 400; Error Code: 400 Bad Request; if you are calling it for an encrypted object. Any other way to check if an object exists, without knowing the encryption key that was used when saving it? I do not want to access the object without having the encryption key, I just want to know if an object named 'blabla' exists or not, so I can prompt an error message to a client that wants to upload an object called 'blabla'.

Upvotes: 0

Views: 1443

Answers (1)

Frederic Henri
Frederic Henri

Reputation: 53713

You could list all elements within the bucket and check if your object is there. even better with the withPrefix method you can limit the response

http://docs.aws.amazon.com/AmazonS3/latest/dev/ListingObjectKeysUsingJava.html

ListObjectsRequest listObjectsRequest = new ListObjectsRequest()
.withBucketName(bucketName)
.withPrefix("blabla");

You can also look at getObjectSummaries() method to know more about the returned object

Upvotes: 2

Related Questions