通过 Amazon S3 on Outposts 使用对象 - Amazon Simple Storage Service
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通过 Amazon S3 on Outposts 使用对象

您可以使用 适用于 Java 的开发工具包 放置和管理 S3 on Outposts 对象。从这些示例中,您可以放置对象并从 Outpost 存储桶获取对象。

将对象放入 Amazon S3 on Outposts 存储桶

下面的示例使用 适用于 Java 的开发工具包 放置一个 S3 on Outposts 对象。有关更多信息,请参阅使用 AWS SDK for Java 上传对象

import com.amazonaws.AmazonServiceException; import com.amazonaws.SdkClientException; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3ClientBuilder; import com.amazonaws.services.s3.model.ObjectMetadata; import com.amazonaws.services.s3.model.PutObjectRequest; import java.io.File; public class PutObject { public static void main(String[] args) { String accessPointArn = "*** Access point ARN ***"; String stringObjKeyName = "*** String object key name ***"; String fileObjKeyName = "*** File object key name ***"; String fileName = "*** Path to file to upload ***"; try { // This code expects that you have AWS credentials set up per: // https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html AmazonS3 s3Client = AmazonS3ClientBuilder.standard() .enableUseArnRegion() .build(); // Upload a text string as a new object. s3Client.putObject(accessPointArn, stringObjKeyName, "Uploaded String Object"); // Upload a file as a new object with ContentType and title specified. PutObjectRequest request = new PutObjectRequest(accessPointArn, fileObjKeyName, new File(fileName)); ObjectMetadata metadata = new ObjectMetadata(); metadata.setContentType("plain/text"); metadata.addUserMetadata("title", "someTitle"); request.setMetadata(metadata); s3Client.putObject(request); } 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(); } } }

获取 Amazon S3 on Outposts 存储桶

以下 S3 on Outposts 示例使用 适用于 Java 的开发工具包 获取存储桶。

import com.amazonaws.AmazonServiceException; import com.amazonaws.SdkClientException; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3ClientBuilder; import com.amazonaws.services.s3.model.GetObjectRequest; import com.amazonaws.services.s3.model.ResponseHeaderOverrides; import com.amazonaws.services.s3.model.S3Object; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; public class GetObject { public static void main(String[] args) throws IOException { String accessPointArn = "*** Access point ARN ***"; String key = "*** Object key ***"; S3Object fullObject = null, objectPortion = null, headerOverrideObject = null; try { // This code expects that you have AWS credentials set up per: // https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html AmazonS3 s3Client = AmazonS3ClientBuilder.standard() .enableUseArnRegion() .build(); // Get an object and print its contents. System.out.println("Downloading an object"); fullObject = s3Client.getObject(new GetObjectRequest(accessPointArn, key)); System.out.println("Content-Type: " + fullObject.getObjectMetadata().getContentType()); System.out.println("Content: "); displayTextInputStream(fullObject.getObjectContent()); // Get a range of bytes from an object and print the bytes. GetObjectRequest rangeObjectRequest = new GetObjectRequest(accessPointArn, key) .withRange(0, 9); objectPortion = s3Client.getObject(rangeObjectRequest); System.out.println("Printing bytes retrieved."); displayTextInputStream(objectPortion.getObjectContent()); // Get an entire object, overriding the specified response headers, and print the object's content. ResponseHeaderOverrides headerOverrides = new ResponseHeaderOverrides() .withCacheControl("No-cache") .withContentDisposition("attachment; filename=example.txt"); GetObjectRequest getObjectRequestHeaderOverride = new GetObjectRequest(accessPointArn, key) .withResponseHeaders(headerOverrides); headerOverrideObject = s3Client.getObject(getObjectRequestHeaderOverride); displayTextInputStream(headerOverrideObject.getObjectContent()); } 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(); } finally { // To ensure that the network connection doesn't remain open, close any open input streams. if (fullObject != null) { fullObject.close(); } if (objectPortion != null) { objectPortion.close(); } if (headerOverrideObject != null) { headerOverrideObject.close(); } } } private static void displayTextInputStream(InputStream input) throws IOException { // Read the text input stream one line at a time and display each line. BufferedReader reader = new BufferedReader(new InputStreamReader(input)); String line = null; while ((line = reader.readLine()) != null) { System.out.println(line); } System.out.println(); } }

复制 Amazon S3 on Outposts 上的对象

以下 S3 on Outposts 示例使用 适用于 Java 的开发工具包 获取存储桶。

import com.amazonaws.AmazonServiceException; import com.amazonaws.SdkClientException; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3ClientBuilder; import com.amazonaws.services.s3.model.CopyObjectRequest; public class CopyObject { public static void main(String[] args) { String accessPointArn = "*** Access point ARN ***"; String sourceKey = "*** Source object key ***"; String destinationKey = "*** Destination object key ***"; try { // This code expects that you have AWS credentials set up per:// https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html AmazonS3 s3Client = AmazonS3ClientBuilder.standard() .enableUseArnRegion() .build(); // Copy the object into a new object in the same bucket. CopyObjectRequest copyObjectRequest = new CopyObjectRequest(accessPointArn, sourceKey, accessPointArn, destinationKey); s3Client.copyObject(copyObjectRequest); } 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(); } } }

删除 Amazon S3 on Outposts 上的对象

下面的 S3 on Outposts 示例将从 适用于 Java 的开发工具包 中删除对象。

import com.amazonaws.AmazonServiceException; import com.amazonaws.SdkClientException; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3ClientBuilder; import com.amazonaws.services.s3.model.DeleteObjectRequest; public class DeleteObject { public static void main(String[] args) { String accessPointArn = "*** Access point ARN ***"; String keyName = "*** Key name ****"; try { // This code expects that you have AWS credentials set up per: // https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html AmazonS3 s3Client = AmazonS3ClientBuilder.standard() .enableUseArnRegion() .build(); s3Client.deleteObject(new DeleteObjectRequest(accessPointArn, keyName)); } 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(); } } }

删除 Amazon S3 on Outposts 上的对象

以下 S3 on Outposts 示例使用 适用于 Java 的开发工具包 删除对象。

import com.amazonaws.AmazonServiceException; import com.amazonaws.SdkClientException; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3ClientBuilder; import com.amazonaws.services.s3.model.DeleteObjectsRequest; import com.amazonaws.services.s3.model.DeleteObjectsRequest.KeyVersion; import com.amazonaws.services.s3.model.DeleteObjectsResult; import java.util.ArrayList; public class DeleteObjects { public static void main(String[] args) { // String accessPointArn = "*** Access point ARN ***"; String accessPointArn = "arn:aws:s3-outposts:us-east-1:785856369849:outpost/ec2/accesspoint/mig-test-60"; try { // This code expects that you have AWS credentials set up per: // https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html AmazonS3 s3Client = AmazonS3ClientBuilder.standard() .enableUseArnRegion() .build(); // Upload three sample objects. ArrayList<KeyVersion> keys = new ArrayList<KeyVersion≫(); for (int i = 0; i < 3; i++) { String keyName = "delete object example " + i; s3Client.putObject(accessPointArn, keyName, "Object number " + i + " to be deleted."); keys.add(new KeyVersion(keyName)); } System.out.println(keys.size() + " objects successfully created."); // Delete the sample objects. DeleteObjectsRequest multiObjectDeleteRequest = new DeleteObjectsRequest(accessPointArn) .withKeys(keys) .withQuiet(false); // Verify that the objects were deleted successfully. DeleteObjectsResult delObjRes = s3Client.deleteObjects(multiObjectDeleteRequest); int successfulDeletes = delObjRes.getDeletedObjects().size(); System.out.println(successfulDeletes + " objects successfully deleted."); } 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(); } } }

列出 Amazon S3 on Outposts 存储桶中的对象

以下 S3 on Outposts 示例列出在 Outposts 存储桶中使用 适用于 Java 的开发工具包 的对象。

重要

本节介绍 API 的最新版本。我们建议您使用此修订后的 API 进行应用程序开发。为了向后兼容,Amazon S3 继续支持此 API 的先前版本 ListObjects

import com.amazonaws.AmazonServiceException; import com.amazonaws.SdkClientException; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3ClientBuilder; import com.amazonaws.services.s3.model.ListObjectsV2Request; import com.amazonaws.services.s3.model.ListObjectsV2Result; import com.amazonaws.services.s3.model.S3ObjectSummary; public class ListObjectsV2 { public static void main(String[] args) { String accessPointArn = "*** Access point ARN ***"; try { // This code expects that you have AWS credentials set up per: // https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html AmazonS3 s3Client = AmazonS3ClientBuilder.standard() .enableUseArnRegion() .build(); System.out.println("Listing objects"); // maxKeys is set to 2 to demonstrate the use of // ListObjectsV2Result.getNextContinuationToken() ListObjectsV2Request req = new ListObjectsV2Request().withBucketName(accessPointArn).withMaxKeys(2); ListObjectsV2Result result; do { result = s3Client.listObjectsV2(req); for (S3ObjectSummary objectSummary : result.getObjectSummaries()) { System.out.printf(" - %s (size: %d)\n", objectSummary.getKey(), objectSummary.getSize()); } // If there are more than maxKeys keys in the bucket, get a continuation token // and list the next objects. String token = result.getNextContinuationToken(); System.out.println("Next Continuation Token: " + token); req.setContinuationToken(token); } while (result.isTruncated()); } 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(); } } }

这会在 Amazon S3 on Outposts 存储桶中启动分段上传对象

以下 S3 on Outposts 示例在 Outposts 存储桶中使用 适用于 Java 的开发工具包 启动、上传和完成分段上传。有关更多信息,请参阅上传文件

重要

本节介绍 API 的最新版本。我们建议您使用此修订后的 API 进行应用程序开发。为了向后兼容,Amazon S3 继续支持此 API 的先前版本 ListObjects

import com.amazonaws.AmazonServiceException; import com.amazonaws.SdkClientException; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3ClientBuilder; import com.amazonaws.services.s3.model.*; import java.util.ArrayList; import java.util.List; public class MultipartUploadCopy { public static void main(String[] args) { String accessPointArn = "*** Source access point ARN ***"; String sourceObjectKey = "*** Source object key ***"; String destObjectKey = "*** Target object key ***"; try { // This code expects that you have AWS credentials set up per: // https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html AmazonS3 s3Client = AmazonS3ClientBuilder.standard() .enableUseArnRegion() .build(); // Initiate the multipart upload. InitiateMultipartUploadRequest initRequest = new InitiateMultipartUploadRequest(accessPointArn, destObjectKey); InitiateMultipartUploadResult initResult = s3Client.initiateMultipartUpload(initRequest); // Get the object size to track the end of the copy operation. GetObjectMetadataRequest metadataRequest = new GetObjectMetadataRequest(accessPointArn, sourceObjectKey); ObjectMetadata metadataResult = s3Client.getObjectMetadata(metadataRequest); long objectSize = metadataResult.getContentLength(); // Copy the object using 5 MB parts. long partSize = 5 * 1024 * 1024; long bytePosition = 0; int partNum = 1; List<CopyPartResult> copyResponses = new ArrayList<CopyPartResult>(); while (bytePosition < objectSize) { // The last part might be smaller than partSize, so check to make sure // that lastByte isn't beyond the end of the object. long lastByte = Math.min(bytePosition + partSize - 1, objectSize - 1); // Copy this part. CopyPartRequest copyRequest = new CopyPartRequest() .withSourceBucketName(accessPointArn) .withSourceKey(sourceObjectKey) .withDestinationBucketName(accessPointArn) .withDestinationKey(destObjectKey) .withUploadId(initResult.getUploadId()) .withFirstByte(bytePosition) .withLastByte(lastByte) .withPartNumber(partNum++); copyResponses.add(s3Client.copyPart(copyRequest)); bytePosition += partSize; } // Complete the upload request to concatenate all uploaded parts and make the copied object available. CompleteMultipartUploadRequest completeRequest = new CompleteMultipartUploadRequest( accessPointArn, destObjectKey, initResult.getUploadId(), getETags(copyResponses)); s3Client.completeMultipartUpload(completeRequest); System.out.println("Multipart copy complete."); } 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(); } } // This is a helper function to construct a list of ETags. private static List<PartETag> getETags(List<CopyPartResult> responses) { List<PartETag> etags = new ArrayList<PartETag>(); for (CopyPartResult response : responses) { etags.add(new PartETag(response.getPartNumber(), response.getETag())); } return etags; }

复制 Amazon S3 on Outposts 存储桶中的对象

以下 S3 on Outposts 示例使用 适用于 Java 的开发工具包 从 Outposts 存储桶中复制对象。此示例改写自 Amazon S3 的使用分段上传复制对象示例。

import com.amazonaws.AmazonServiceException; import com.amazonaws.SdkClientException; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3ClientBuilder; import com.amazonaws.services.s3.model.*; import java.util.ArrayList; import java.util.List; public class MultipartUploadCopy { public static void main(String[] args) { String accessPointArn = "*** Source access point ARN ***"; String sourceObjectKey = "*** Source object key ***"; String destObjectKey = "*** Target object key ***"; try { // This code expects that you have AWS credentials set up per: // https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html AmazonS3 s3Client = AmazonS3ClientBuilder.standard() .enableUseArnRegion() .build(); // Initiate the multipart upload. InitiateMultipartUploadRequest initRequest = new InitiateMultipartUploadRequest(accessPointArn, destObjectKey); InitiateMultipartUploadResult initResult = s3Client.initiateMultipartUpload(initRequest); // Get the object size to track the end of the copy operation. GetObjectMetadataRequest metadataRequest = new GetObjectMetadataRequest(accessPointArn, sourceObjectKey); ObjectMetadata metadataResult = s3Client.getObjectMetadata(metadataRequest); long objectSize = metadataResult.getContentLength(); // Copy the object using 5 MB parts. long partSize = 5 * 1024 * 1024; long bytePosition = 0; int partNum = 1; List<CopyPartResult> copyResponses = new ArrayList<CopyPartResult>(); while (bytePosition < objectSize) { // The last part might be smaller than partSize, so check to make sure // that lastByte isn't beyond the end of the object. long lastByte = Math.min(bytePosition + partSize - 1, objectSize - 1); // Copy this part. CopyPartRequest copyRequest = new CopyPartRequest() .withSourceBucketName(accessPointArn) .withSourceKey(sourceObjectKey) .withDestinationBucketName(accessPointArn) .withDestinationKey(destObjectKey) .withUploadId(initResult.getUploadId()) .withFirstByte(bytePosition) .withLastByte(lastByte) .withPartNumber(partNum++); copyResponses.add(s3Client.copyPart(copyRequest)); bytePosition += partSize; } // Complete the upload request to concatenate all uploaded parts and make the copied object available. CompleteMultipartUploadRequest completeRequest = new CompleteMultipartUploadRequest( accessPointArn, destObjectKey, initResult.getUploadId(), getETags(copyResponses)); s3Client.completeMultipartUpload(completeRequest); System.out.println("Multipart copy complete."); } 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(); } } // This is a helper function to construct a list of ETags. private static List<PartETag> getETags(List<CopyPartResult> responses) { List<PartETag> etags = new ArrayList<PartETag>(); for (CopyPartResult response : responses) { etags.add(new PartETag(response.getPartNumber(), response.getETag())); } return etags; } }

列出 Amazon S3 on Outposts 存储桶中对象的分段

以下 S3 on Outposts 示例使用 适用于 Java 的开发工具包 列出来自 Outposts 存储桶的对象的分段。

import com.amazonaws.AmazonServiceException; import com.amazonaws.SdkClientException; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3ClientBuilder; import com.amazonaws.services.s3.model.*; import java.util.List; public class ListParts { public static void main(String[] args) { String accessPointArn = "*** Access point ARN ***"; String keyName = "*** Key name ***"; String uploadId = "*** Upload ID ***"; try { // This code expects that you have AWS credentials set up per: // https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html AmazonS3 s3Client = AmazonS3ClientBuilder.standard() .enableUseArnRegion() .build(); ListPartsRequest listPartsRequest = new ListPartsRequest(accessPointArn, keyName, uploadId); PartListing partListing = s3Client.listParts(listPartsRequest); List<PartSummary> partSummaries = partListing.getParts(); System.out.println(partSummaries.size() + " multipart upload parts"); for (PartSummary p : partSummaries) { System.out.println("Upload part: Part number = \"" + p.getPartNumber() + "\", ETag = " + p.getETag()); } } 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(); } } }

检索 Amazon S3 on Outposts 存储桶中正在进行的分段上传的列表

以下 S3 on Outposts 示例说明如何使用 适用于 Java 的开发工具包 从 Outposts 存储桶检索正在进行的分段上传的列表。此示例改写自 Amazon S3 的列出分段上传示例。

import com.amazonaws.AmazonServiceException; import com.amazonaws.SdkClientException; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3ClientBuilder; import com.amazonaws.services.s3.model.ListMultipartUploadsRequest; import com.amazonaws.services.s3.model.MultipartUpload; import com.amazonaws.services.s3.model.MultipartUploadListing; import java.util.List; public class ListMultipartUploads { public static void main(String[] args) { String accessPointArn = "*** Access point ARN ***"; try { // This code expects that you have AWS credentials set up per: // https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html AmazonS3 s3Client = AmazonS3ClientBuilder.standard() .enableUseArnRegion() .build(); // Retrieve a list of all in-progress multipart uploads. ListMultipartUploadsRequest allMultipartUploadsRequest = new ListMultipartUploadsRequest(accessPointArn); MultipartUploadListing multipartUploadListing = s3Client.listMultipartUploads(allMultipartUploadsRequest); List<MultipartUpload> uploads = multipartUploadListing.getMultipartUploads(); // Display information about all in-progress multipart uploads. System.out.println(uploads.size() + " multipart upload(s) in progress."); for (MultipartUpload u : uploads) { System.out.println("Upload in progress: Key = \"" + u.getKey() + "\", id = " + u.getUploadId()); } } 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(); } } }

中止 Amazon S3 on Outposts 存储桶中对象的分段上传

以下 S3 on Outposts 示例说明如何使用 适用于 Java 的开发工具包 从 Outposts 存储桶中止对象的分段上传。此示例改写自 Amazon S3 的中止分段上传示例。

import com.amazonaws.AmazonServiceException; import com.amazonaws.SdkClientException; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3ClientBuilder; import com.amazonaws.services.s3.model.ListMultipartUploadsRequest; import com.amazonaws.services.s3.model.MultipartUpload; import com.amazonaws.services.s3.model.MultipartUploadListing; import java.util.List; public class ListMultipartUploads { public static void main(String[] args) { String accessPointArn = "*** Access point ARN ***"; try { // This code expects that you have AWS credentials set up per: // https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html AmazonS3 s3Client = AmazonS3ClientBuilder.standard() .enableUseArnRegion() .build(); // Retrieve a list of all in-progress multipart uploads. ListMultipartUploadsRequest allMultipartUploadsRequest = new ListMultipartUploadsRequest(accessPointArn); MultipartUploadListing multipartUploadListing = s3Client.listMultipartUploads(allMultipartUploadsRequest); List<MultipartUpload> uploads = multipartUploadListing.getMultipartUploads(); // Display information about all in-progress multipart uploads. System.out.println(uploads.size() + " multipart upload(s) in progress."); for (MultipartUpload u : uploads) { System.out.println("Upload in progress: Key = \"" + u.getKey() + "\", id = " + u.getUploadId()); } } 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(); } } }

对 Amazon S3 on Outposts 存储桶使用 Head Bucket 操作

以下 S3 on Outposts 示例说明如何确定存储桶是否存在以及您是否有权访问该存储桶。

import com.amazonaws.AmazonServiceException; import com.amazonaws.SdkClientException; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3ClientBuilder; import com.amazonaws.services.s3.model.HeadBucketRequest; public class HeadBucket { public static void main(String[] args) { String accessPointArn = "*** Access point ARN ***"; try { // This code expects that you have AWS credentials set up per: // https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html AmazonS3 s3Client = AmazonS3ClientBuilder.standard() .enableUseArnRegion() .build(); s3Client.headBucket(new HeadBucketRequest(accessPointArn)); } 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(); } } }