public static class AWS_S3ClientInfo

    {

        private static readonly string awsAccessKey = "AKIAJOXFZDXXXXX";

        private static readonly string awsSecretKey = "6s2AGbNYmhF4xeXXXXXXXXX/";

        public static readonly string bucketName = "test";

        //提供最基本的一个配置

        public static AmazonS3Config config = new AmazonS3Config()

        {

            //这个地址是固定的，可以不写

            //ServiceURL = "http://s3.amazonaws.com",

            //因为aws服务器是分地区的,这里如果不配置区域会一直报错，还找不到头绪。

            RegionEndpoint = RegionEndpoint.APSoutheast1,

        };

        public static IAmazonS3 GetS3ClientInfo()

        {

            return new AmazonS3Client(awsAccessKey, awsSecretKey, config);

        }

    }

  public void UpLoadFile()

        {

            try

            {

                using (IAmazonS3 s3Client = AWS_S3ClientInfo.GetS3ClientInfo())

                {

                    var bt = File.ReadAllBytes(AppDomain.CurrentDomain.BaseDirectory + "../../img/a.txt");

                   var mm= new MemoryStream(bt);

                    PutObjectRequest putObjectRequest = new PutObjectRequest();

                    putObjectRequest.InputStream = mm;

                    //可以上传string类型

                    //putObjectRequest.ContentBody = "你好!";

                    putObjectRequest.BucketName = AWS_S3ClientInfo.bucketName;

                    putObjectRequest.ContentType = "application/octet-stream";
                     putObjectRequest.Metadata.Add("Access-Control-Allow-Origin", "*");

                    //文件的路径

                    putObjectRequest.Key = $"img/test-6.jpg";

                    //文件权限

                    putObjectRequest.CannedACL = S3CannedACL.PublicRead;

                    PutObjectResponse putObjectResponse = s3Client.PutObject(putObjectRequest);

                    mm.Dispose();

                    Console.WriteLine("结果=" + putObjectResponse.HttpStatusCode);

                }

            }

            catch (Exception e)

            {

                Console.WriteLine("Exception message: {0}", e.Message);

            }

        }

            using (IAmazonS3 s3Client = AWS_S3ClientInfo.GetS3ClientInfo())

            {

                GetObjectRequest request = new GetObjectRequest()

                {

                    BucketName = AWS_S3ClientInfo.bucketName,

                    Key = "s3.txt"

                };

                //下载

                GetObjectResponse response = s3Client.GetObject(request);

                response.WriteResponseStreamToFile(AppDomain.CurrentDomain.BaseDirectory + "1.txt");

            }

        using (IAmazonS3 s3Client = AWS_S3ClientInfo.GetS3ClientInfo())

          {

                GetObjectRequest request = new GetObjectRequest()

                {

                    BucketName = AWS_S3ClientInfo.bucketName,

                    Key = "s3.txt"

                };

                //删除

                 s3Client.DeleteObject(request.BucketName, request.Key);

            }

    //忽略验证ssl/tls证书

    ServicePointManager.ServerCertificateValidationCallback =(sender, certificate, chain, errors) => true;