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

使用适用于 .NET 的 AWS 开发工具包管理标签

以下示例演示如何使用适用于 .NET 的 AWS 开发工具包为新对象设置标签并检索或替换现有对象的标签。有关对象标签的更多信息,请参阅对象标签

有关如何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.S3; using Amazon.S3.Model; using System; using System.Collections.Generic; using System.Threading.Tasks; namespace Amazon.DocSamples.S3 { public class ObjectTagsTest { private const string bucketName = "*** bucket name ***"; private const string keyName = "*** key name for the new object ***"; private const string filePath = @"*** file path ***"; // Specify your bucket region (an example region is shown). private static readonly RegionEndpoint bucketRegion = RegionEndpoint.USWest2; private static IAmazonS3 client; public static void Main() { client = new AmazonS3Client(bucketRegion); PutObjectWithTagsTestAsync().Wait(); } static async Task PutObjectWithTagsTestAsync() { try { // 1. Put an object with tags. var putRequest = new PutObjectRequest { BucketName = bucketName, Key = keyName, FilePath = filePath, TagSet = new List<Tag>{ new Tag { Key = "Keyx1", Value = "Value1"}, new Tag { Key = "Keyx2", Value = "Value2" } } }; PutObjectResponse response = await client.PutObjectAsync(putRequest); // 2. Retrieve the object's tags. GetObjectTaggingRequest getTagsRequest = new GetObjectTaggingRequest { BucketName = bucketName, Key = keyName }; GetObjectTaggingResponse objectTags = await client.GetObjectTaggingAsync(getTagsRequest); for (int i = 0; i < objectTags.Tagging.Count; i++) Console.WriteLine("Key: {0}, Value: {1}", objectTags.Tagging[i].Key, objectTags.Tagging[0].Value); // 3. Replace the tagset. Tagging newTagSet = new Tagging(); newTagSet.TagSet = new List<Tag>{ new Tag { Key = "Key3", Value = "Value3"}, new Tag { Key = "Key4", Value = "Value4" } }; PutObjectTaggingRequest putObjTagsRequest = new PutObjectTaggingRequest() { BucketName = bucketName, Key = keyName, Tagging = newTagSet }; PutObjectTaggingResponse response2 = await client.PutObjectTaggingAsync(putObjTagsRequest); // 4. Retrieve the object's tags. GetObjectTaggingRequest getTagsRequest2 = new GetObjectTaggingRequest(); getTagsRequest2.BucketName = bucketName; getTagsRequest2.Key = keyName; GetObjectTaggingResponse objectTags2 = await client.GetObjectTaggingAsync(getTagsRequest2); for (int i = 0; i < objectTags2.Tagging.Count; i++) Console.WriteLine("Key: {0}, Value: {1}", objectTags2.Tagging[i].Key, objectTags2.Tagging[0].Value); } catch (AmazonS3Exception e) { Console.WriteLine( "Error encountered ***. Message:'{0}' when writing an object" , e.Message); } catch (Exception e) { Console.WriteLine( "Encountered an error. Message:'{0}' when writing an object" , e.Message); } } } }