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Amazon Simple Storage Service
開発者ガイド (API Version 2006-03-01)

AWS SDK for Java を使用したキーのリスト作成

次の Java コード例では、バケット内のオブジェクトキーをリストします。レスポンスが切り捨てられて (レスポンスで <IsTruncated>が true) 、コードループが続行されます。それ以降の各リクエストでは、リクエストで continuation-token を指定し、その値を、前のレスポンスで Amazon S3 によって返される <NextContinuationToken> に設定します。

作業サンプルを作成およびテストする方法については、「Java コード例のテスト」を参照してください。

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import java.io.IOException; import com.amazonaws.AmazonClientException; import com.amazonaws.AmazonServiceException; import com.amazonaws.auth.profile.ProfileCredentialsProvider; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3Client; import com.amazonaws.services.s3.model.ListObjectsRequest; import com.amazonaws.services.s3.model.ListObjectsV2Request; import com.amazonaws.services.s3.model.ListObjectsV2Result; import com.amazonaws.services.s3.model.ObjectListing; import com.amazonaws.services.s3.model.S3ObjectSummary; public class ListKeys { private static String bucketName = "***bucket name***"; public static void main(String[] args) throws IOException { AmazonS3 s3client = new AmazonS3Client(new ProfileCredentialsProvider()); try { System.out.println("Listing objects"); final ListObjectsV2Request req = new ListObjectsV2Request().withBucketName(bucketName).withMaxKeys(2); ListObjectsV2Result result; do { result = s3client.listObjectsV2(req); for (S3ObjectSummary objectSummary : result.getObjectSummaries()) { System.out.println(" - " + objectSummary.getKey() + " " + "(size = " + objectSummary.getSize() + ")"); } System.out.println("Next Continuation Token : " + result.getNextContinuationToken()); req.setContinuationToken(result.getNextContinuationToken()); } while(result.isTruncated() == true ); } catch (AmazonServiceException ase) { System.out.println("Caught an AmazonServiceException, " + "which means your request made it " + "to Amazon S3, but was rejected with an error response " + "for some reason."); System.out.println("Error Message: " + ase.getMessage()); System.out.println("HTTP Status Code: " + ase.getStatusCode()); System.out.println("AWS Error Code: " + ase.getErrorCode()); System.out.println("Error Type: " + ase.getErrorType()); System.out.println("Request ID: " + ase.getRequestId()); } catch (AmazonClientException ace) { System.out.println("Caught an AmazonClientException, " + "which means the client encountered " + "an internal error while trying to communicate" + " with S3, " + "such as not being able to access the network."); System.out.println("Error Message: " + ace.getMessage()); } } }