Amazon Simple Storage Service
开发人员指南 (API 版本 2006-03-01)
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使用适用于 .NET 的 AWS 开发工具包 (低级别 API) 将文件上传到 S3 存储桶

以下 C# 示例演示如何使用低级别适用于 .NET 的 AWS 开发工具包分段上传 API 将文件上传到 S3 存储桶。有关 Amazon S3 分段上传的信息,请参阅分段上传概述

注意

如果使用适用于 .NET 的 AWS 开发工具包 API 上传大型对象,数据写入到请求流时可能出现超时。您可以使用 UploadPartRequest 设置显式超时。

以下 C# 示例使用低级别分段上传 API 将文件上传到 S3 存储桶。有关示例与特定版本的适用于 .NET 的 AWS 开发工具包的兼容性的信息以及有关创建和测试有效示例的说明,请参阅运行 Amazon S3 .NET 代码示例

using Amazon.Runtime; using Amazon.S3; using Amazon.S3.Model; using System; using System.Collections.Generic; using System.IO; using System.Threading.Tasks; namespace Amazon.DocSamples.S3 { class UploadFileMPULowLevelAPITest { private const string bucketName = "*** provide bucket name ***"; private const string keyName = "*** provide a name for the uploaded object ***"; private const string filePath = "*** provide the full path name of the file to upload ***"; // Specify your bucket region (an example region is shown). private static readonly RegionEndpoint bucketRegion = RegionEndpoint.USWest2; private static IAmazonS3 s3Client; public static void Main() { s3Client = new AmazonS3Client(bucketRegion); Console.WriteLine("Uploading an object"); UploadObjectAsync().Wait(); } private static async Task UploadObjectAsync() { // Create list to store upload part responses. List<UploadPartResponse> uploadResponses = new List<UploadPartResponse>(); // Setup information required to initiate the multipart upload. InitiateMultipartUploadRequest initiateRequest = new InitiateMultipartUploadRequest { BucketName = bucketName, Key = keyName }; // Initiate the upload. InitiateMultipartUploadResponse initResponse = await s3Client.InitiateMultipartUploadAsync(initiateRequest); // Upload parts. long contentLength = new FileInfo(filePath).Length; long partSize = 5 * (long)Math.Pow(2, 20); // 5 MB try { Console.WriteLine("Uploading parts"); long filePosition = 0; for (int i = 1; filePosition < contentLength; i++) { UploadPartRequest uploadRequest = new UploadPartRequest { BucketName = bucketName, Key = keyName, UploadId = initResponse.UploadId, PartNumber = i, PartSize = partSize, FilePosition = filePosition, FilePath = filePath }; // Track upload progress. uploadRequest.StreamTransferProgress += new EventHandler<StreamTransferProgressArgs>(UploadPartProgressEventCallback); // Upload a part and add the response to our list. uploadResponses.Add(await s3Client.UploadPartAsync(uploadRequest)); filePosition += partSize; } // Setup to complete the upload. CompleteMultipartUploadRequest completeRequest = new CompleteMultipartUploadRequest { BucketName = bucketName, Key = keyName, UploadId = initResponse.UploadId }; completeRequest.AddPartETags(uploadResponses); // Complete the upload. CompleteMultipartUploadResponse completeUploadResponse = await s3Client.CompleteMultipartUploadAsync(completeRequest); } catch (Exception exception) { Console.WriteLine("An AmazonS3Exception was thrown: { 0}", exception.Message); // Abort the upload. AbortMultipartUploadRequest abortMPURequest = new AbortMultipartUploadRequest { BucketName = bucketName, Key = keyName, UploadId = initResponse.UploadId }; await s3Client.AbortMultipartUploadAsync(abortMPURequest); } } public static void UploadPartProgressEventCallback(object sender, StreamTransferProgressArgs e) { // Process event. Console.WriteLine("{0}/{1}", e.TransferredBytes, e.TotalBytes); } } }

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适用于 .NET 的 AWS 开发工具包

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