更新时间:2023-11-09 GMT+08:00
获取自定义元数据
下载对象成功后会返回对象的自定义元数据。以下代码展示了如何获取自定义元数据:
// 初始化配置参数 ObsConfig config = new ObsConfig(); config.Endpoint = "https://your-endpoint"; // 认证用的ak和sk硬编码到代码中或者明文存储都有很大的安全风险,建议在配置文件或者环境变量中密文存放,使用时解密,确保安全;本示例以ak和sk保存在环境变量中为例,运行本示例前请先在本地环境中设置环境变量AccessKeyID和SecretAccessKey。 // 您可以登录访问管理控制台获取访问密钥AK/SK,获取方式请参见https://support.huaweicloud.com/intl/zh-cn/usermanual-ca/ca_01_0003.html string accessKey= Environment.GetEnvironmentVariable("AccessKeyID", EnvironmentVariableTarget.Machine); string secretKey= Environment.GetEnvironmentVariable("SecretAccessKey", EnvironmentVariableTarget.Machine); // 创建ObsClient实例 ObsClient client = new ObsClient(accessKey, secretKey, config); // 下载对象 try { GetObjectRequest request = new GetObjectRequest() { BucketName = "bucketname", ObjectKey = "objectname", }; using (GetObjectResponse response = client.GetObject(request)) { //获取对象自定义元数据 foreach (string key in response.Metadata.Keys) { Console.WriteLine("key is :" + key + " value is: " + response.Metadata[key]); } string dest = "savepath"; if (!File.Exists(dest)) { response.WriteResponseStreamToFile(dest); } Console.WriteLine("Get object response: {0}", response.StatusCode); } } catch (ObsException ex) { Console.WriteLine("ErrorCode: {0}", ex.ErrorCode); Console.WriteLine("ErrorMessage: {0}", ex.ErrorMessage); }
父主题: 下载对象