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Use ListParts with an AWS SDK

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The following code example shows how to use ListParts.

Java

SDK for Java 2.x

Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.

List parts of a multipart upload in a directory bucket.

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.s3.S3Client;
import software.amazon.awssdk.services.s3.model.ListPartsRequest;
import software.amazon.awssdk.services.s3.model.ListPartsResponse;
import software.amazon.awssdk.services.s3.model.Part;
import software.amazon.awssdk.services.s3.model.S3Exception;

import java.io.IOException;
import java.nio.file.Path;
import java.util.List;

import static com.example.s3.util.S3DirectoryBucketUtils.abortDirectoryBucketMultipartUploads;
import static com.example.s3.util.S3DirectoryBucketUtils.createDirectoryBucket;
import static com.example.s3.util.S3DirectoryBucketUtils.createDirectoryBucketMultipartUpload;
import static com.example.s3.util.S3DirectoryBucketUtils.createS3Client;
import static com.example.s3.util.S3DirectoryBucketUtils.deleteDirectoryBucket;
import static com.example.s3.util.S3DirectoryBucketUtils.getFilePath;
import static com.example.s3.util.S3DirectoryBucketUtils.multipartUploadForDirectoryBucket;

    /**
     * Lists the parts of a multipart upload for the specified S3 directory bucket.
     *
     * @param s3Client   The S3 client used to interact with S3
     * @param bucketName The name of the directory bucket
     * @param objectKey  The key (name) of the object being uploaded
     * @param uploadId   The upload ID used to track the multipart upload
     * @return A list of Part representing the parts of the multipart upload
     */
    public static List<Part> listDirectoryBucketMultipartUploadParts(S3Client s3Client, String bucketName,
            String objectKey, String uploadId) {
        logger.info("Listing parts for object: {} in bucket: {}", objectKey, bucketName);

        try {
            // Create a ListPartsRequest
            ListPartsRequest listPartsRequest = ListPartsRequest.builder()
                    .bucket(bucketName)
                    .uploadId(uploadId)
                    .key(objectKey)
                    .build();

            // List the parts of the multipart upload
            ListPartsResponse response = s3Client.listParts(listPartsRequest);
            List<Part> parts = response.parts();
            for (Part part : parts) {
                logger.info("Uploaded part: Part number = \"{}\", etag = {}", part.partNumber(), part.eTag());
            }
            return parts;

        } catch (S3Exception e) {
            logger.error("Failed to list parts: {} - Error code: {}", e.awsErrorDetails().errorMessage(),
                    e.awsErrorDetails().errorCode());
            return List.of(); // Return an empty list if an exception is thrown
        }
    }

• For API details, see ListParts in AWS SDK for Java 2.x API Reference.

For a complete list of AWS SDK developer guides and code examples, see Developing with Amazon S3 using the AWS SDKs. This topic also includes information about getting started and details about previous SDK versions.