API | Operation | Description |
Querying object metadata | Queries the metadata of an object. |
HeadObject
(querying object metadata) API. To get the detailed metadata of an object, use the API for querying object metadata.using COSXML.Model.Object;using COSXML.Auth;using System;using COSXML;namespace COSSnippet{public class DoesObjectExistModel {private CosXml cosXml;DoesObjectExistModel() {CosXmlConfig config = new CosXmlConfig.Builder().SetRegion("COS_REGION") // Set the default region. For abbreviations of COS regions, visit https://www.tencentcloud.com/document/product/436/6224?from_cn_redirect=1..Build();string secretId = "SECRET_ID"; // SecretId of the TencentCloud API. For more information about how to obtain the API key, see https://console.tencentcloud.com/cam/capi.string secretKey = "SECRET_KEY"; // SecretKey of the TencentCloud API. For more information about how to obtain the API key, see https://console.tencentcloud.com/cam/capi.long durationSecond = 600; // Validity period of the request signature in secondsQCloudCredentialProvider qCloudCredentialProvider = new DefaultQCloudCredentialProvider(secretId,secretKey, durationSecond);this.cosXml = new CosXmlServer(config, qCloudCredentialProvider);}/// Check whether an object existspublic void DoesObjectExist(){try{// Bucket name in the format of `BucketName-APPID`. You can get APPID by referring to https://console.tencentcloud.com/developer.string bucket = "examplebucket-1250000000";string key = "exampleobject"; // Object keyDoesObjectExistRequest request = new DoesObjectExistRequest(bucket, key);// Execute the requestbool exist = cosXml.DoesObjectExist(request);// Request succeededConsole.WriteLine("object exist state is: " + exist);}catch (COSXML.CosException.CosClientException clientEx){// Request failedConsole.WriteLine("CosClientException: " + clientEx);}catch (COSXML.CosException.CosServerException serverEx){// Request failedConsole.WriteLine("CosServerException: " + serverEx.GetInfo());}//.cssg-snippet-body-end}// .cssg-methods-pragmastatic void Main(string[] args){DoesObjectExistModel m = new DoesObjectExistModel();/// Check whether an object existsm.DoesObjectExist();// .cssg-methods-pragma}}}
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