Generate a presigned Object URL Using the AWS SDK for Java

Example
The following example generates a presigned URL that you can give to others so that they can retrieve an object from an S3 bucket. For more information, see Share an Object with Others.
For instructions on creating and testing a working sample, see Testing the Amazon S3 Java Code Examples.

import com.amazonaws.AmazonServiceException;

import com.amazonaws.HttpMethod;

import com.amazonaws.SdkClientException;

import com.amazonaws.auth.profile.ProfileCredentialsProvider;

import com.amazonaws.regions.Regions;

import com.amazonaws.services.s3.AmazonS3;

import com.amazonaws.services.s3.AmazonS3ClientBuilder;

import com.amazonaws.services.s3.model.GeneratePresignedUrlRequest;

import java.io.IOException;

import java.net.URL;

public class GeneratePresignedURL {

public static void main(String[] args) throws IOException {

Regions clientRegion = Regions.DEFAULT_REGION;

String bucketName = "*** Bucket name ***";

String objectKey = "*** Object key ***";

try {

AmazonS3 s3Client = AmazonS3ClientBuilder.standard()

.withRegion(clientRegion)

.withCredentials(new ProfileCredentialsProvider())

.build();

// Set the presigned URL to expire after one hour.

java.util.Date expiration = new java.util.Date();

long expTimeMillis = expiration.getTime();

expTimeMillis += 1000 * 60 * 60;

expiration.setTime(expTimeMillis);

// Generate the presigned URL.

System.out.println("Generating pre-signed URL.");

GeneratePresignedUrlRequest generatePresignedUrlRequest =

new GeneratePresignedUrlRequest(bucketName, objectKey)

.withMethod(HttpMethod.GET)

.withExpiration(expiration);

URL url = s3Client.generatePresignedUrl(generatePresignedUrlRequest);

System.out.println("Pre-Signed URL: " + url.toString());

} 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();

}

}

}