Question

我刚刚将我的c＃web应用程序部署到了windows azure。图像上传在我的本地计算机上正常工作但是现在网站已经部署，图像上传不适用于azure存储。我刚收到一条错误，说Error. An error occurred while processing your request.尝试上传图片时。

任何帮助都会感激不尽。

图片上传控制器

public ActionResult Create(UserprofileImage userprofileimage, HttpPostedFileBase file)
        {
            if (ModelState.IsValid)
            {
                if (file != null)
                {
                    var manager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(new ApplicationDbContext()));
                    var currentUser = manager.FindById(User.Identity.GetUserId());
                    file.SaveAs(HttpContext.Server.MapPath("~/Images/")
                                                          + file.FileName);
                    userprofileimage.userImagePath = file.FileName;
                    userprofileimage.UserId = currentUser.Id;
                    userprofileimage.current = 1;
                    db.UserprofileImages.Add(userprofileimage);
                    db.SaveChanges();
                    var userimage = db.UserprofileImages.Where(u => u.UserId == currentUser.Id && u.Id != userprofileimage.Id).ToList();
                    foreach(var item in userimage)
                    {
                        item.Id = 0;
                        db.SaveChanges();
                    }

                    return RedirectToAction("Index", "Profile");
                }


            }

            return View(userprofileimage);
        }

**图片上传HTML **

@using (Html.BeginForm("Create", "UserprofileImage", null, FormMethod.Post,
                              new { enctype = "multipart/form-data" }))
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">

        <hr />
        @Html.ValidationSummary(true)

        <div class="form-group">
            <div class="control-label col-md-2">
                Profile Image
            </div> 
            <div class="col-md-10">
                <input id="userImagePath" title="Upload a profile picture"
                       type="file" name="file" />
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Create" class="btn btn-default" />
            </div>
        </div>
    </div>
}

Answer 1

正如Aran在上面的评论中所建议的那样，我也建议您将图像存储在blob存储中。只有静态图像才能将图像存储在硬盘驱动器上，静态图像将与您的解决方案捆绑在一起并进行部署。如果您的站点实例移动到另一台服务器，则不能指望存在的图像。如果您希望增加为您使用的网站实例的数量，那么在SqlAzure表或blob中存储图像还可以使您更好地扩展应用程序

下面是我使用的示例代码段，让您了解如何使用存储客户端写入blob。

 public async Task AddPhotoAsync(Photo photo)
    {
        var containerName = string.Format("profilepics-{0}", photo.ProfileId).ToLowerInvariant();

        var blobStorage = _storageService.StorageAccount.CreateCloudBlobClient();

        var cloudContainer = blobStorage.GetContainerReference("profilephotos");

        if(cloudContainer.CreateIfNotExists())
        {
            var permissions = await cloudContainer.GetPermissionsAsync();
            permissions.PublicAccess = BlobContainerPublicAccessType.Container;
            cloudContainer.SetPermissions(permissions);
        }

        string uniqueBlobName = string.Format("profilephotos/image_{0}{1}", Guid.NewGuid().ToString(),Path.GetExtension(photo.UploadedImage.FileName));
        var blob = cloudContainer.GetBlockBlobReference(uniqueBlobName);
        blob.Properties.ContentType = photo.UploadedImage.ContentType;
        blob.UploadFromStream(photo.UploadedImage.InputStream);
        photo.Url = blob.Uri.ToString();

        await AddPhotoToDB(photo);

    }

图像上载无法在Azure存储上运行

1 个答案: