文件未按预期在 Asp.Net Core controller 中流式传输

Question

我正在尝试将文件上传到我的onedrive，按预期获取文件似乎没有相应地处理，谁能指出我的问题。

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");
}

注意：我正在关注这个官方文档。

Answer 1

我不确定 APi，但我知道您正在尝试将文件名作为文件上传。 您可能希望使用PutAsync并将其传递给uploadedFile.OpenReadStream

打开请求 stream 以读取上传的文件。

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，在运行此代码之前，请确保您已向 Azure AD 应用程序授予以下委派权限：

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