Amazon Simple Storage Service
开发人员指南 (API Version 2006-03-01)
AWS 服务或AWS文档中描述的功能,可能因地区/位置而异。点 击 Getting Started with Amazon AWS to see specific differences applicable to the China (Beijing) Region.

跟踪分段上传进度

高级别分段上传 API 提供了一个侦听接口 (ProgressListener),以便在使用 TransferManager 类上传数据时跟踪上传进度。要在您的代码中使用事件,您必须导入 com.amazonaws.services.s3.model.ProgressEventcom.amazonaws.services.s3.model.ProgressListener 类型。

进度事件将定期发生,并且会通知侦听者已传输的字节。

以下 Java 代码示例演示了如何订阅 ProgressEvent 事件和编写处理程序。

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TransferManager tm = new TransferManager(new ProfileCredentialsProvider()); PutObjectRequest request = new PutObjectRequest( existingBucketName, keyName, new File(filePath)); // Subscribe to the event and provide event handler. request.setProgressListener(new ProgressListener() { public void progressChanged(ProgressEvent event) { System.out.println("Transferred bytes: " + event.getBytesTransfered()); } });

以下 Java 代码将上传文件并使用 ProgressListener 来跟踪上传进度。有关如何创建和测试有效示例的说明,请参阅 测试 Java 代码示例

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import java.io.File; import com.amazonaws.AmazonClientException; import com.amazonaws.auth.profile.ProfileCredentialsProvider; import com.amazonaws.event.ProgressEvent; import com.amazonaws.event.ProgressListener; import com.amazonaws.services.s3.model.PutObjectRequest; import com.amazonaws.services.s3.transfer.TransferManager; import com.amazonaws.services.s3.transfer.Upload; public class TrackMPUProgressUsingHighLevelAPI { public static void main(String[] args) throws Exception { String existingBucketName = "*** Provide bucket name ***"; String keyName = "*** Provide object key ***"; String filePath = "*** file to upload ***"; TransferManager tm = new TransferManager(new ProfileCredentialsProvider()); // For more advanced uploads, you can create a request object // and supply additional request parameters (ex: progress listeners, // canned ACLs, etc.) PutObjectRequest request = new PutObjectRequest( existingBucketName, keyName, new File(filePath)); // You can ask the upload for its progress, or you can // add a ProgressListener to your request to receive notifications // when bytes are transferred. request.setGeneralProgressListener(new ProgressListener() { @Override public void progressChanged(ProgressEvent progressEvent) { System.out.println("Transferred bytes: " + progressEvent.getBytesTransferred()); } }); // TransferManager processes all transfers asynchronously, // so this call will return immediately. Upload upload = tm.upload(request); try { // You can block and wait for the upload to finish upload.waitForCompletion(); } catch (AmazonClientException amazonClientException) { System.out.println("Unable to upload file, upload aborted."); amazonClientException.printStackTrace(); } } }