AWS S3 Java SDK - Access Denied

Question

I am trying to access a bucket and all its object using AWS SDK but while running the code i am getting an error as Exception in thread "main" com.amazonaws.services.s3.model.AmazonS3Exception: Access Denied (Service: Amazon S3; Status Code: 403; Error Code: AccessDenied; Request ID: X), S3 Extended Request ID: Y=

Kindly suggest, where i am lacking and why access denied error is occurring although i have taken all following permission to the bucket:

s3:GetObject s3:GetObjectVersion s3:GetObjectAcl s3:GetBucketAcl s3:GetBucketCORS s3:GetBucketLocation s3:GetBucketLogging s3:ListBucket s3:ListBucketVersions s3:ListBucketMultipartUploads s3:GetObjectTorrent s3:GetObjectVersionAcl 

Code is as follows:

AWSCredentials credentials = new BasicAWSCredentials(accessKey, secretKey); ClientConfiguration clientConfig = new ClientConfiguration(); clientConfig.setProtocol(Protocol.HTTP); AmazonS3 conn = new AmazonS3Client(credentials, clientConfig); conn.setEndpoint(bucketName); Bucket bucket = conn.createBucket(bucketName); ObjectListing objects = conn.listObjects(bucket.getName()); do {     for (S3ObjectSummary objectSummary : objects.getObjectSummaries()) {             System.out.println(objectSummary.getKey() + "\t" +                     objectSummary.getSize() + "\t" +                     StringUtils.fromDate(objectSummary.getLastModified()));     }     objects = conn.listNextBatchOfObjects(objects); } while (objects.isTruncated()); 

Answer 1

Go to IAM and check whether the user [ Access Key & Secret Key ] which is being used for the API has the previliges to use S3 Based API.

Attached S3 Policy to the specified User - try with S3 Full Access; you can fine-grain the access once this works. For More Information Check this Link [ Managing IAM Policies ]

Answer 2

The problem is now solved. There were following issue to the code:

1. The end point was not correct, There should be a correct end point.
2. There was not enough permission given to the bucket. A list of complete permission should be taken before using the bucket in AWS SDK.

Below is the correct code

AWSCredentials credentials = new BasicAWSCredentials(accessKey, secretKey); ClientConfiguration clientConfig = new ClientConfiguration(); clientConfig.setProtocol(Protocol.HTTP); AmazonS3 conn = new AmazonS3Client(credentials, clientConfig); conn.setEndpoint("correct end point"); Bucket bucket = conn.createBucket(bucketName); ObjectListing objects = conn.listObjects(bucket.getName()); do {     for (S3ObjectSummary objectSummary : objects.getObjectSummaries()) {             System.out.println(objectSummary.getKey() + "\t" +                     objectSummary.getSize() + "\t" +                     StringUtils.fromDate(objectSummary.getLastModified()));     }     objects = conn.listNextBatchOfObjects(objects); } while (objects.isTruncated());