小编sha*_*thi的帖子

我正在尝试从S3存储桶下载对象，该对象面临以下问题 ：请求中包含的安全性令牌无效。 请检查并更正错误所在。

下面是我的代码1.获取临时的credentails：

main()    
{
    string path = "http://XXX.XXX.XXX./latest/meta-data/iam/security-credentials/EC2_WLMA_Permissions";

                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(path);
                request.Method = "GET";
                request.ContentType = "application/json";
                HttpWebResponse response = request.GetResponse() as HttpWebResponse;
                string result = string.Empty;
                using (StreamReader reader = new StreamReader(response.GetResponseStream()))
                {
                    result = reader.ReadToEnd();
                    dynamic metaData = JsonConvert.DeserializeObject(result);
                    _awsAccessKeyId = metaData.AccessKeyId;
                    _awsSecretAccessKey = metaData.SecretAccessKey;
                }
}

2. 创建SessionAWSCredentials实例：

   SessionAWSCredentials tempCredentials =
                    GetTemporaryCredentials(_awsAccessKeyId, _awsSecretAccessKey);
   

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   // GetTemporaryCredentials方法：

      private static SessionAWSCredentials GetTemporaryCredentials(
                       string accessKeyId, string secretAccessKeyId)
       {             
   
           AmazonSecurityTokenServiceClient stsClient =
           new AmazonSecurityTokenServiceClient(accessKeyId,
                                                    secretAccessKeyId);
           Console.WriteLine(stsClient.ToString());
           GetSessionTokenRequest getSessionTokenRequest …

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