获取对象元数据

using System;
using System.Threading.Tasks;
using Amazon.Runtime;
using Amazon.S3;
using Amazon.S3.Model;

namespace DotNetSDK.ObjectOperation
{
    public class GetObjectMetadataExample
    {
        public static async Task GetObjectMetadata()
        {
            var accessKey = "YOUR_ACCESS_KEY";
            var secretKey = "YOUR_SECRET_KEY";
            var endpoint = "YOUR_ENDPOINT";
            var bucketName = "EXAMPLE_BUCKET";
            var key = "EXAMPLE_KEY";
            try
            {
                var credentials = new BasicAWSCredentials(accessKey, secretKey);
                var conf = new AmazonS3Config
                {
                    ServiceURL = endpoint
                };
                var s3Client = new AmazonS3Client(credentials, conf);
                var getObjectMetadataRequest = new GetObjectMetadataRequest()
                {
                    BucketName = bucketName,
                    Key = key
                };

                var result = await s3Client.GetObjectMetadataAsync(getObjectMetadataRequest);
                if (result.HttpStatusCode != System.Net.HttpStatusCode.OK)
                {
                    Console.WriteLine("fail to get metadata of object {0}, HttpStatusCode:{1}, ErrorCode:{2}.", key, (int) result.HttpStatusCode, result.HttpStatusCode);
                    return;
                }

                Console.WriteLine("get object metadata response: {0}", (int) result.HttpStatusCode);
                Console.WriteLine("object ETag:{0}, object versionId:{1}", result.ETag, result.VersionId);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
        }
    }
}