Amazon Simple Storage Service
Developer Guide (API Version 2006-03-01)

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Upload an Object Using the AWS SDK for Java

The following example creates two objects. The first object has a text string as data, and the second object is a file. The example creates the first object by specifying the bucket name, object key, and text data directly in a call to AmazonS3Client.putObject(). The example creates the second object by using a PutObjectRequest that specifies the bucket name, object key, and file path. The PutObjectRequest also specifies the ContentType header and title metadata.

For instructions on creating and testing a working sample, see Testing the Amazon S3 Java Code Examples.

import com.amazonaws.AmazonServiceException; import com.amazonaws.SdkClientException; import com.amazonaws.regions.Regions; 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; import java.io.IOException; public class UploadObject { public static void main(String[] args) throws IOException { Regions clientRegion = Regions.DEFAULT_REGION; String bucketName = "*** Bucket name ***"; 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() .withRegion(clientRegion) .build(); // Upload a text string as a new object. s3Client.putObject(bucketName, stringObjKeyName, "Uploaded String Object"); // Upload a file as a new object with ContentType and title specified. PutObjectRequest request = new PutObjectRequest(bucketName, fileObjKeyName, new File(fileName)); ObjectMetadata metadata = new ObjectMetadata(); metadata.setContentType("plain/text"); metadata.addUserMetadata("x-amz-meta-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(); } } }