C# 如何在AmazonS3 bucket中创建子目录

我正在使用AmazonS3Web服务，无法在我的bucket上创建子目录

我想要那样的东西

当用户上传文件时，会在S3 Bucket上创建一个名为用户id的子目录，并将文件存储到子目录中

我正在使用以下代码

 AmazonS3Client s3Client = new AmazonS3Client("AWSAccessKey", "AWSSecretKey", Amazon.RegionEndpoint.APSoutheast1);  

    protected void btnUpload_Click(object sender, EventArgs e)
    {

        if (!string.IsNullOrEmpty(fileUpload.FileName))
        {
            //Saving File to local disk folder.
            string filePath = Server.MapPath("aa") + "\\" + fileUpload.FileName;
            string fileExtension = fileUpload.FileName.Substring(fileUpload.FileName.LastIndexOf(".") + 1);
            fileUpload.SaveAs(filePath);
            string contentType = GetContentType(fileExtension);    

            //Push the given object into S3 Bucket
            PutObjectRequest objReq = new PutObjectRequest
            {
                Key = fileUpload.FileName,
                FilePath =  filePath,
                ContentType = contentType,
                BucketName = "datastore.MyData",
                CannedACL = S3CannedACL.Private,               

            };

            PutObjectResponse response = s3Client.PutObject(objReq);
            if (response.ETag != null)
            {
                string etag = response.ETag;
                string versionID = response.VersionId;
                Response.Write("<script>alert('File uploaded to S3 Bucket Successfully.');</script>");
            }
            //Deleting Localy Saved File
            if (File.Exists(filePath))
            {
                File.Delete(filePath);
            }
        }
    }
    private string GetContentType(string fileExtension)
    {
        string contentType = string.Empty;
        switch (fileExtension)
        {
            case "bmp": contentType = "image/bmp"; break;
            case "jpeg": contentType = "image/jpeg"; break;
            case "jpg": contentType = "image/jpg"; break;
            case "gif": contentType = "image/gif"; break;
            case "tiff": contentType = "image/tiff"; break;
            case "png": contentType = "image/png"; break;
            case "plain": contentType = "text/plain"; break;
            case "rtf": contentType = "text/rtf"; break;
            case "msword": contentType = "application/msword"; break;
            case "zip": contentType = "application/zip"; break;
            case "mpeg": contentType = "audio/mpeg"; break;
            case "pdf": contentType = "application/pdf"; break;
            case "xgzip": contentType = "application/x-gzip"; break;
            case "xcompressed": contentType = "applicatoin/x-compressed"; break;
        }
        return contentType;
    }

AmazonS3Client s3Client=新的AmazonS3Client（“AWSAccessKey”、“AWSSecretKey”、Amazon.RegionEndpoint.APSoutheast1）；
受保护的void btnUpload\u单击（对象发送方，事件参数e）
{
如果（！string.IsNullOrEmpty（fileUpload.FileName））
{
//将文件保存到本地磁盘文件夹。
字符串filePath=Server.MapPath（“aa”）+“\\”+fileUpload.FileName；
字符串fileExtension=fileUpload.FileName.Substring（fileUpload.FileName.LastIndexOf（“.”+1）；
fileUpload.SaveAs（filePath）；
string contentType=GetContentType（文件扩展名）；
//将给定对象推入S3桶中
PutObjectRequest objReq=新的PutObjectRequest
{
Key=fileUpload.FileName，
FilePath=FilePath，
ContentType=ContentType，
BucketName=“datastore.MyData”，
CannedACL=S3CannedACL.Private，
};
PutObjectResponse=s3Client.PutObject（objReq）；
如果（response.ETag！=null）
{
字符串etag=response.etag；
字符串versionID=response.versionID；
Write（“警报（‘文件成功上传到S3存储桶’）；”；
}
//删除本地保存的文件
if（File.Exists（filePath））
{
File.Delete（文件路径）；
}
}
}
私有字符串GetContentType（字符串文件扩展名）
{
string contentType=string.Empty；
交换机（文件扩展名）
{
案例“bmp”：contentType=“image/bmp”；中断；
案例“jpeg”：contentType=“image/jpeg”；中断；
案例“jpg”：contentType=“image/jpg”；中断；
案例“gif”：contentType=“image/gif”；中断；
案例“tiff”：contentType=“image/tiff”；中断；
案例“png”：contentType=“image/png”；中断；
大小写“plain”：contentType=“text/plain”；中断；
案例“rtf”：contentType=“text/rtf”；中断；
案例“msword”：contentType=“application/msword”；中断；
案例“zip”：contentType=“application/zip”；中断；
案例“mpeg”：contentType=“音频/mpeg”；中断；
案例“pdf”：contentType=“application/pdf”；中断；
案例“xgzip”：contentType=“application/x-gzip”；中断；
案例“xcompressed”：contentType=“applicationin/x-compressed”；中断；
}
返回contentType；
}

---

请帮助我实现这一目标

在

s3

中没有文件夹，只有

key/value

对。键可以包含斜杠

（“/”

，这将使它在管理控制台中显示为文件夹，但从编程角度看，它不是文件夹，而是字符串值

我们使用结尾带有“/”字符的FileKey来表示您想要创建一个文件夹

PutObjectRequest objReq = new PutObjectRequest
            {
                Key = "Name of the folder you want to create/" fileUpload.FileName,
                FilePath =  filePath,
                ContentType = contentType,
                BucketName = "datastore.MyData",
                CannedACL = S3CannedACL.Private,               

            };

---

您也可以使用此方法

 string S3FileDir = "/Demo/Test/";

    TransferUtility fileTransferUtility = new TransferUtility(keyId,secretekey,RegionEndpoint.USWest);               
                    fileTransferUtility.Upload(localFilePath, BucketName + S3FileDir);

---

最简单的方法是使用TransferUtility

var fileTransferUtility = new TransferUtility(_s3Client);
fileTransferUtility.Upload(localFilePath, bucketName+"/"+ subFolder);