文件未按预期在 Asp.Net 核心控制器中传输

Question

我正在尝试将文件上传到我的 onedrive，按预期方式获取文件似乎没有进行相应的处理，任何人都可以指出问题所在。

代码片段：

public async Task<IActionResult> UploadFileOnFolder(IFormFile uploadedFile, string folderName)
{
    try
    {
        if (uploadedFile.Length > 0)
        {
            dynamic response;
            var fileName = ContentDispositionHeaderValue.Parse(uploadedFile.FileName).FileName.Trim('"');

            using var stream = new System.IO.MemoryStream(Encoding.UTF8.GetBytes(fileName));
                response =  await _graphServiceClient.Me.Drive.Items[folderName].Content
                                  .Request()
                                  .PutAsync<DriveItem>(stream);

            ViewData["FileUploadInfo"] = response;
        }
        else
        {
            ViewData["message"] = "Sorry Upload failed! Please check your file!";
        }
     }
     catch (Exception ex)
     {
         ViewData["message"] = ex.Message;
     }

     return RedirectToAction("RecentDirveInfo");
}

注：我在关注this official document.

Answer 1

我不确定 APi，但我知道您正在尝试上传文件名作为文件。您可能希望使用 uploadedFile.OpenReadStream 而不是将其传递给 PutAsync

Opens the request stream for reading the uploaded file.

using var stream = uploadedFile.OpenReadStream();
response =  await _graphServiceClient.Me.Drive.Items[folderName].Content
                 .Request()
                 .PutAsync<DriveItem>(stream);

Answer 2

试试下面的代码：

public async Task<IActionResult> UploadFileOnFolder(IFormFile uploadedFile, string folderName)
        {
            try
            {

                if (uploadedFile.Length > 0)
                {
                    dynamic response;

                    var fileName = uploadedFile.FileName;
                    using var stream = uploadedFile.OpenReadStream();
                    response = await _graphServiceClient.Me.Drive.Root.ItemWithPath(folderName +"/" + fileName).Content.Request().PutAsync<DriveItem>(stream);
                        
                    ViewData["FileUploadInfo"] = response;
                }
                else
                {
                    ViewData["message"] = "Sorry check your file!";
                }

            }
            catch (Exception ex)
            {

                ViewData["message"] = ex.Message;
            }
            return RedirectToAction("RecentDirveInfo");
        }

我已经对它进行了测试，它非常适合我：

顺便说一句，在您运行此代码之前，请确保您已向您的 Azure AD 应用程序授予以下 委派权限 :

Files.ReadWrite, Files.ReadWrite.All, Sites.ReadWrite.All

文件未按预期在 Asp.Net 核心控制器中传输

File not streaming as expected in Asp.Net Core controller

c#

azure-active-directory

asp.net-core

microsoft-graph-sdks

microsoft-graph-api