Delete a folder and its content AWS S3 java

Question

Is it possible to delete a folder(In S3 bucket) and all its content with a single api request using java sdk for aws. For browser console we can delete and folder and its content with a single click and I hope that same behavior should be available using the APIs also.

Answer 1

There is no such thing as folders in S3; There are simply files with slashes in the filenames.

Browser console will visualize these slashes as folders, but they're not real.

You can delete all files with the same prefix, but first you need to look them up with list_objects(), then you can batch delete them.

For code snippet using Java sdk please refer below doc

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

Answer 2

You can specify keyPrefix in ListObjectsRequest.

For example, consider a bucket that contains the following keys:

• foo/bar/baz
• foo/bar/bash
• foo/bar/bang
• foo/boo

And you want to delete files from foo/bar/baz.

if (s3Client.doesBucketExist(bucketName)) {
        ListObjectsRequest listObjectsRequest = new ListObjectsRequest()
                .withBucketName(bucketName)
                .withPrefix("foo/bar/baz");

        ObjectListing objectListing = s3Client.listObjects(listObjectsRequest);

        while (true) {
            for (S3ObjectSummary objectSummary : objectListing.getObjectSummaries()) {
                s3Client.deleteObject(bucketName, objectSummary.getKey());
            }
            if (objectListing.isTruncated()) {
                objectListing = s3Client.listNextBatchOfObjects(objectListing);
            } else {
                break;
            }
        }
    }

https://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/s3/model/ListObjectsRequest.html