使用 Amazon Web Services 账户 或 IAM 用户凭证发出请求

import com.amazonaws.AmazonServiceException;
import com.amazonaws.SdkClientException;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.ListObjectsRequest;
import com.amazonaws.services.s3.model.ObjectListing;
import com.amazonaws.services.s3.model.S3ObjectSummary;

import java.io.IOException;
import java.util.List;

public class MakingRequests {

    public static void main(String[] args) throws IOException {
        Regions clientRegion = Regions.DEFAULT_REGION;
        String bucketName = "*** Bucket name ***";

        try {
            AmazonS3 s3Client = AmazonS3ClientBuilder.standard()
                    .withCredentials(new ProfileCredentialsProvider())
                    .withRegion(clientRegion)
                    .build();

            // Get a list of objects in the bucket, two at a time, and 
            // print the name and size of each object.
            ListObjectsRequest listRequest = new ListObjectsRequest().withBucketName(bucketName).withMaxKeys(2);
            ObjectListing objects = s3Client.listObjects(listRequest);
            while (true) {
                List<S3ObjectSummary> summaries = objects.getObjectSummaries();
                for (S3ObjectSummary summary : summaries) {
                    System.out.printf("Object \"%s\" retrieved with size %d\n", summary.getKey(), summary.getSize());
                }
                if (objects.isTruncated()) {
                    objects = s3Client.listNextBatchOfObjects(objects);
                } else {
                    break;
                }
            }
        } catch (AmazonServiceException e) {
            // The call was transmitted successfully, but Amazon S3 couldn't process 
            // it, so it returned an error response.
            e.printStackTrace();
        } catch (SdkClientException e) {
            // Amazon S3 couldn't be contacted for a response, or the client
            // couldn't parse the response from Amazon S3.
            e.printStackTrace();
        }
    }
}

using Amazon;
using Amazon.S3;
using Amazon.S3.Model;
using System;
using System.Threading.Tasks;

namespace Amazon.DocSamples.S3
{
    class MakeS3RequestTest
    {
        private const string bucketName = "*** bucket name ***"; 
        // Specify your bucket region (an example region is shown).
        private static readonly RegionEndpoint bucketRegion = RegionEndpoint.USWest2;
        private static IAmazonS3 client;

        public static void Main()
        {
            using (client = new AmazonS3Client(bucketRegion))
            {
                Console.WriteLine("Listing objects stored in a bucket");
                ListingObjectsAsync().Wait();
            }
        }

        static async Task ListingObjectsAsync()
        {
            try
            {
                ListObjectsRequest request = new ListObjectsRequest
                {
                    BucketName = bucketName,
                    MaxKeys = 2
                };
                do
                {
                    ListObjectsResponse response = await client.ListObjectsAsync(request);
                    // Process the response.
                    foreach (S3Object entry in response.S3Objects)
                    {
                        Console.WriteLine("key = {0} size = {1}",
                            entry.Key, entry.Size);
                    }

                    // If the response is truncated, set the marker to get the next 
                    // set of keys.
                    if (response.IsTruncated)
                    {
                        request.Marker = response.NextMarker;
                    }
                    else
                    {
                        request = null;
                    }
                } while (request != null);
            }
            catch (AmazonS3Exception e)
            {
                Console.WriteLine("Error encountered on server. Message:'{0}' when writing an object", e.Message);
            }
            catch (Exception e)
            {
                Console.WriteLine("Unknown encountered on server. Message:'{0}' when writing an object", e.Message);
            }
        }
    }
}

 
require 'vendor/autoload.php';

use Aws\Sts\StsClient;
use Aws\S3\S3Client;
use Aws\S3\Exception\S3Exception;

$bucket = '*** Your Bucket Name ***';

$s3 = new S3Client([
    'region' => 'us-east-1',
    'version' => 'latest',
]);

// Retrieve the list of buckets.
$result = $s3->listBuckets();

try {
    // Retrieve a paginator for listing objects.
    $objects = $s3->getPaginator('ListObjects', [
        'Bucket' => $bucket
    ]);

    echo "Keys retrieved!" . PHP_EOL;
    
    // Print the list of objects to the page.
    foreach ($objects as $object) {
        echo $object['Key'] . PHP_EOL;
    }
} catch (S3Exception $e) {
    echo $e->getMessage() . PHP_EOL;
}

# Prerequisites:
#  - An existing Amazon S3 bucket.

require "aws-sdk-s3"

# @param s3_client [Aws::S3::Client] An initialized Amazon S3 client.
# @param bucket_name [String] The bucket's name.
# @return [Boolean] true if all operations succeed; otherwise, false.
# @example
#   s3_client = Aws::S3::Client.new(region: 'us-west-2')
#   exit 1 unless list_bucket_objects?(s3_client, 'doc-example-bucket')
def list_bucket_objects?(s3_client, bucket_name)
  puts "Accessing the bucket named '#{bucket_name}'..."
  objects = s3_client.list_objects_v2(
    bucket: bucket_name,
    max_keys: 50
  )

  if objects.count.positive?
    puts "The object keys in this bucket are (first 50 objects):"
    objects.contents.each do |object|
      puts object.key
    end
  else
    puts "No objects found in this bucket."
  end

  return true
rescue StandardError => e
  puts "Error while accessing the bucket named '#{bucket_name}': #{e.message}"
  return false
end

# Full example call:
# Replace us-west-2 with the AWS Region you're using for Amazon S3.
def run_me
  region = "us-west-2"
  bucket_name = "BUCKET_NAME"
  s3_client = Aws::S3::Client.new(region: region)

  exit 1 unless list_bucket_objects?(s3_client, bucket_name)
end

run_me if $PROGRAM_NAME == __FILE__