Question

在我的项目中，我需要用户上传文件，然后将其发送到Blob存储。目前，我只能发送已存储的文件，我需要它来发送用户上传的文件。

这是我目前上传文件的代码，但是，我不确定如何修改

使用（var fileStream = System.IO.File.OpenRead（file））

这样它需要一个来自“HttpPostedFile文件”的文件

代码中注释掉的部分是旧版本，它将它存储在我的系统而非云端。

    // POST: DocumentUps/Create
    [HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult CreateUpload([Bind(Include = "DocumentId,DocName,creationDate,RevisionNumber,Author,Status,ActivationDate,Attachment,RevisionId")] DocumentUps documentUps, HttpPostedFileBase file)
    {


        if (ModelState.IsValid)
        {
            documentUps.RevisionId = documentUps.DocumentId;
            documentUps.Username = User.Identity.Name;
            documentUps.Attachment = file.FileName;
            documentUps.creationDate = DateTime.Now;
            documentUps.ActivationDate = DateTime.Now;
            documentUps.RevisionNumber = 0;
            documentUps.Status = StatusChoice.Draft;

            db.DocumentUps.Add(documentUps);
            db.SaveChanges();

            int id = documentUps.DocumentId;


            DocumentUps docsup = db.DocumentUps.Find(id);

            documentUps.RevisionId = id;
            documentUps.Username = User.Identity.Name;
            documentUps.Attachment = documentUps.Attachment;
            documentUps.DocumentId = documentUps.DocumentId;
            documentUps.creationDate = documentUps.creationDate;
            documentUps.ActivationDate = DateTime.Now;
            documentUps.RevisionNumber = 0;
            documentUps.DocName = documentUps.DocName;
            documentUps.Author = documentUps.Author;
            documentUps.Status = StatusChoice.Draft;

            db.Entry(documentUps).State = EntityState.Modified;
            db.SaveChanges();


            if (file != null && file.ContentLength > 0)
            {

                CloudStorageAccount storageAccount = CloudStorageAccount.Parse(
                CloudConfigurationManager.GetSetting("filestorageideagen_AzureStorageConnectionString"));

                Microsoft.WindowsAzure.StorageClient.CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();

                Microsoft.WindowsAzure.StorageClient.CloudBlobContainer container = blobClient.GetContainerReference("documentuploader");

                Microsoft.WindowsAzure.StorageClient.CloudBlockBlob blob = container.GetBlockBlobReference("TestUpload");

                using (var fileStream = System.IO.File.OpenRead(file))
                {
                    blob.UploadFromStream(fileStream);
                }


                //var fileName = documentUps.DocumentId.ToString() + documentUps.RevisionId.ToString() + Path.GetFileName(file.FileName);

                //var path = Path.Combine(Server.MapPath("~/Content/fileHistory"), fileName);
                //file.SaveAs(path);
            }

Answer 1

正如@Brendan Green所提到的，使用HttpPostedFile的InputStream属性将解决您的问题。请使用以下代码替换原始上传代码。

//set content type of your blob
blob.Properties.ContentType = file.ContentType;
//upload your file to your blob
blob.UploadFromStream(file.InputStream);

Microsoft.WindowsAzure.StorageClient.CloudBlobClient

根据您的代码，您使用的是旧版本的存储客户端库。最新版本是8.1。如果您是使用Azure存储客户端库的入门者。我们建议您使用NuGet升级到最新版本。

Azure Blob将文件上载到存储

1 个答案: