AWS S3 Java 2.X Client configuration issue

Question

 StaticCredentialsProvider provider = StaticCredentialsProvider.create(AwsBasicCredentials.create("Access key ID", "Access secret key"));
S3Client s3 = S3Client.builder().credentialsProvider(provider).build())
List<Bucket> buckets = s3.listBuckets().buckets();
for (Bucket bucket : buckets) {
  System.out.println("bucket name: " + bucket.name());
}

I am trying this code to connect to S3 storage to get the bucket details but always getting the error Unable to load region from any of the providers in the chain software.amazon.awssdk.regions.providers.DefaultAwsRegionProviderChain. Not sure what is wrong here. Please help.

docs.aws.amazon.com/sdk-for-java/latest/developer-guide/… , it is not "out of the box", you need to have at least an ec2 instance running(4.)...simpler: providing config files(3.)/setting env variable(2.)/setting programmatically(1.) — xerx593
– xerx593, Commented Feb 15, 2024 at 8:43

AndrewL · Accepted Answer · 2024-02-14 23:51:46Z

0

Simply you need to tell the S3 service what region your buckets reside in:

StaticCredentialsProvider provider = StaticCredentialsProvider.create(
        AwsBasicCredentials.create("Access key ID", "Access secret key"));

S3Client s3 = S3Client.builder().credentialsProvider(provider)
        .region(Region.EU_WEST_2)  // <<<<<<<<<<<<<<<<<<<<<<<<< you need a region here
        .build();

List<Bucket> buckets = s3.listBuckets().buckets();
for (Bucket bucket : buckets) {
    System.out.println("bucket name: " + bucket.name());
}

answered Feb 14, 2024 at 23:51

AndrewL

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7 Comments

Sraj Over a year ago

Hello Andrew, Thanks for your reply. Here, i don't want to mention the specific region here. wanted to connect the default region of my account.

Sraj Over a year ago

BTW, i am not using the amazon S3 but using a S3 compatible service provider

AndrewL Over a year ago

"wanted to connect the default region of my account" - yes! but how does the S3 library know this when you use the explicit StaticCredentialsProvider? When using CLI for AWS, for example, you ALSO have define a default. This is implicilty found in ~/.aws/config. (Other CredentialsProviders are available that use environment variables to acquire such default from configuration files like the CLI uses.)

Sraj Over a year ago

Thanks for your response. I am able to get it work with the following code. **bold S3Client s3Client = S3Client.builder() .endpointProvider(new S3EndpointProvider() { @Override public CompletableFuture<Endpoint> resolveEndpoint(S3EndpointParams endpointParams) { return CompletableFuture.completedFuture(Endpoint.builder() .url(URI.create("x2u2.or.idrivee2-61.com")) .build()); } }).region(Region.US_EAST_1) .credentialsProvider(() -> AwsBasicCredentials.create("", "")) .build();

Sraj Over a year ago

However, i am getting the below error while creating the bucket. An error occurred when parsing the HTTP request PUT at '/' Bucket creation code : CreateBucketRequest bucketRequest = CreateBucketRequest.builder() .bucket(bucketName) .build(); s3Client.createBucket(bucketRequest);

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