import software.amazon.awssdk.services.s3.S3Client; import software.amazon.awssdk.services.s3.S3Utilities; import software.amazon.awssdk.services.s3.model.S3Uri; import java.net.URI; // Initialize Client and Utilities S3Client s3Client = S3Client.create(); S3Utilities s3Utilities = s3Client.utilities(); // The URI to parse String s3UriString = "s3://my-bucket/documents/report.pdf"; S3Uri s3Uri = s3Utilities.parseUri(URI.create(s3UriString)); // Extract components String bucket = s3Uri.bucket().orElseThrow(() -> new IllegalArgumentException("No bucket found")); String key = s3Uri.key().orElseThrow(() -> new IllegalArgumentException("No key found")); Use code with caution. 3. Downloading the File
Once you have the bucket and key, use the S3Client to download the object. You can save it directly to a local file path or read it into memory as an InputStream . Option A: Download directly to a local file This is the most efficient method for large files. java download s3 uri
To get started, you need the AWS SDK S3 dependency in your pom.xml (Maven) or build.gradle (Gradle): import software
The following guide focuses on the modern . 1. Prerequisites and Dependencies You can save it directly to a local
Changes in parsing Amazon S3 URIs from version 1 to version 2
Downloading files from Amazon S3 using a URI (e.g., s3://bucket-name/key/path/file.txt ) is a common task for Java developers. While the AWS SDK for Java doesn't provide a single "one-click" method that accepts a raw URI string to download a file, it does offer powerful tools to extract the bucket and key needed for a download request.