Amazon Simple Storage Service
开发人员指南 (API 版本 2006-03-01)
AWS 文档中描述的 AWS 服务或功能可能因区域而异。要查看适用于中国区域的差异,请参阅 Amazon AWS 入门

使用AWS SDK for Java生成预签名对象 URL

以下示例将生成预签名 URL,您可以将其提供给其他用户,以便他们可以从 S3 存储桶中检索对象。有关更多信息,请参阅 与其他用户共享数据元

有关创建和测试有效示例的说明,请参阅测试 Amazon S3 Java 代码示例

import java.io.IOException; import java.net.URL; import com.amazonaws.AmazonServiceException; import com.amazonaws.HttpMethod; import com.amazonaws.SdkClientException; import com.amazonaws.auth.profile.ProfileCredentialsProvider; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3ClientBuilder; import com.amazonaws.services.s3.model.GeneratePresignedUrlRequest; public class GeneratePresignedURL { public static void main(String[] args) throws IOException { String clientRegion = "*** Client 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(); } } }