Amazon S3 和 C# 签名不匹配错误

Question

我是 Amazon AWS 的新手，尝试使用 .NET 的 SDK 使用如下所示的控制台应用程序将对象（在本例中为图像）放入（上传）到存储桶：

namespace AwsConsoleApp1
{
    class Program
    {
        static string bucketName = "bucketName";
        static string keyName = "keyName";
        static string filePath = "filePath";

        static IAmazonS3 client;
        public static void Main(string[] args)
        {

            NameValueCollection appConfig = ConfigurationManager.AppSettings;
            string accessKeyID = appConfig["AWSAccessKey"];
            string secretAccessKeyID = appConfig["AWSSecretKey"];

            try
            {
                using (client = Amazon.AWSClientFactory.CreateAmazonS3Client(accessKeyID, secretAccessKeyID, Amazon.RegionEndpoint.EUWest1))
                {
                    Console.WriteLine("Uploading an object");
                    WritingAnObject();
                }
            }
            catch (AmazonS3Exception s3Exception)
            {
                Console.WriteLine(s3Exception.Message, s3Exception.InnerException);
            }
            catch (AmazonSecurityTokenServiceException stsException)
            {
                Console.WriteLine(stsException.Message, stsException.InnerException);
            }
        }


        /// <summary>
        /// Put object to AWS bucket
        /// </summary>
        static void WritingAnObject()
        {
            try
            {
                PutObjectRequest putRequest1 = new PutObjectRequest
                {
                    BucketName = bucketName,
                    Key = keyName,
                    FilePath = filePath
                };

                PutObjectResponse response1 = client.PutObject(putRequest1);

            }
            catch (AmazonS3Exception amazonS3Exception)
            {
                if (amazonS3Exception.ErrorCode != null &&
                    (amazonS3Exception.ErrorCode.Equals("InvalidAccessKeyId")
                    ||
                    amazonS3Exception.ErrorCode.Equals("InvalidSecurity")))
                {
                    Console.WriteLine("Check the provided AWS Credentials.");
                    Console.WriteLine(
                        "For service sign up go to http://aws.amazon.com/s3");
                }
                else
                {
                    Console.WriteLine(
                        "Error occurred. Message:'{0}' when writing an object"
                        , amazonS3Exception.Message);
                }
            }
        }        
    }
}

我收到以下错误：

我们计算的请求签名与您提供的签名不匹配。请检查您的密钥和登录方法。

Answer 1

扩展此答案，说明自 AWSSDK.Core 版本 3.7.107 以来，S3 存储桶和文件路径的处理发生了新的重大更改。

以前，您可以将路径添加到存储桶名称后缀，并将文件名定义为路径的文件名部分。在上述版本之后，它不再起作用，并且会给你一个神秘的错误消息：

The request signature we calculated does not match the signature you provided. Check your key and signin method.

您现在需要将文件路径作为前缀移动到文件名上。

更多信息可在此处获取：https://github.com/aws/aws-sdk-net/issues/2622

 GetObjectRequest request = new GetObjectRequest
    {
        BucketName = "my-bucket/Folder", // No longer works
        Key = "fileName"
    };  

 GetObjectRequest request = new GetObjectRequest
        {
            BucketName = "my-bucket",
            Key = "Folder/fileName" // Works
        };