Question

我允许用户上传包含图片路径的excel文件。问题是它抛出了以下错误：

System.IO.DirectoryNotFoundException：找不到部分内容路径'C：\ Users \ gwphi_000 \ Desktop \ test \ OrderEmail.png'。在 System.IO .__ Error.WinIOError（Int32 errorCode，String maybeFullPath）at System.IO.FileStream.Init（String path，FileMode mode，FileAccess 访问，Int32权限，布尔useRights，FileShare共享，Int32 bufferSize，FileOptions选项，SECURITY_ATTRIBUTES secAttrs，String msgPath，Boolean bFromProxy，Boolean useLongPath，Boolean checkHost）在System.IO.FileStream..ctor（字符串路径，FileMode模式，FileAccess 访问，FileShare共享，Int32 bufferSize，FileOptions选项，字符串 msgPath，Boolean bFromProxy，Boolean useLongPath，Boolean checkHost）在System.IO.File.InternalReadAllBytes（String path，Boolean checkHost）在UploadExelFiles.Helpers.GetExcelDataFromFile.ReadExcelFile（String pathToMedia）

在IIS中，我已将应用程序池更改为网络服务，并在我的本地测试计算机上运行正常，但在远程服务器上它会抛出错误。

我的代码是

foreach (var item in excelList)
{
    string fileName             = Guid.NewGuid().ToString();
    var content                 = contentService.CreateContent(item.Product, allEventsNode.Id, "accessorieItems");
    IMediaService mediaService  = ApplicationContext.Current.Services.MediaService;
    var newImage                = mediaService.CreateMedia($"{fileName}.jpeg", -1, "Image");
    byte[] buffer               = File.ReadAllBytes(Path.GetFullPath(item.ProductUrl));
    MemoryStream strm           = new MemoryStream(buffer);

    newImage.SetValue("umbracoFile", $"{fileName}.jpeg", strm);
    mediaService.Save(newImage);

    var umbracoHelper   = new UmbracoHelper(UmbracoContext.Current);
    var image           = umbracoHelper.Media(newImage.Id).Url;
    string imagePath    = image.ToString();

    content.SetValue("productId", item.ProductId);
    content.SetValue("productTitle", item.Product);
    content.SetValue("productPrice", item.Price);
    content.SetValue("productImage", imagePath);
    content.SetValue("productDescription", item.ProductDescription);
    contentService.SaveAndPublishWithStatus(content);
}

Answer 1

它无法找到该文件，因为它不存在，或者它没有权限。你说：

在IIS中，我已将应用程序池更改为网络服务和本地试验机

但是你在服务器上做了同样的事吗？

另外，请记住，在服务器上运行时，它将在服务器上查找文件。路径C:\Users\gwphi_000\Desktop\test\是否存在于服务器上？

Answer 2

为了防止其他人需要上传包含图片路径的excel文件，我已经发布了我是如何做到的。

重点是“加布里埃尔·卢西”和“加布里埃尔·鲁奇”。写道，路径在服务器上寻找图像，我会因为厌倦而不去想它而责怪我。

无论如何，现在代码已经重新编写，所以你现在必须上传一个zip文件，在该文件中是excel文件和图像。

如何从excel文件中获取数据的代码如下所示，请注意，这是针对Umbraco的，因此您可能需要修改它以供自己使用。

public static bool ReadExcelFile(string pathToMedia)
        {
            try
            {
                string filePath                 = pathToMedia;
                string zipFilePath              = HttpContext.Current.Server.MapPath("~/www/UploadExcelFile");
                string extractImagesTo          = HttpContext.Current.Server.MapPath("~/www/Images/AccessoriesZipImages");
                string pathToExcelFileOnServer  = string.Empty;



                using (ZipArchive archive = ZipFile.OpenRead(filePath))
                {
                    foreach (ZipArchiveEntry entry in archive.Entries)
                    {
                        if (entry.FullName.EndsWith(".xlsx", StringComparison.OrdinalIgnoreCase) ||entry.FullName.EndsWith("xls", StringComparison.OrdinalIgnoreCase))
                        {
                            if (File.Exists(Path.Combine(zipFilePath, entry.Name)))
                            {
                                File.Delete(Path.Combine(zipFilePath, entry.Name));
                            }

                            pathToExcelFileOnServer = Path.Combine(zipFilePath, entry.Name);
                            entry.ExtractToFile(Path.Combine(zipFilePath, entry.Name));
                        }
                    }
                }


                using (ZipArchive archive = ZipFile.OpenRead(filePath))
                {
                    foreach (ZipArchiveEntry entry in archive.Entries)
                    {
                        if (File.Exists(Path.Combine(extractImagesTo, entry.Name)))
                        {
                            File.Delete(Path.Combine(extractImagesTo, entry.Name));
                        }

                        if (entry.FullName.EndsWith(".png", StringComparison.OrdinalIgnoreCase) || entry.FullName.EndsWith(".jpg", StringComparison.OrdinalIgnoreCase))
                        {
                            entry.ExtractToFile(Path.Combine(extractImagesTo, entry.Name));
                        }
                    }
                }

                if (!string.IsNullOrEmpty(pathToExcelFileOnServer))
                {
                    using (var stream = File.Open(pathToExcelFileOnServer, FileMode.Open, FileAccess.Read))
                    {
                        using (var reader = ExcelReaderFactory.CreateReader(stream))
                        {
                            var result = reader.AsDataSet();

                            List<ShoppingCartViewModel> excelList = new List<ShoppingCartViewModel>();

                            foreach (DataTable table in result.Tables)
                            {
                                foreach (DataRow dr in table.Rows.Cast<DataRow>().Skip(1)) //Skipping header
                                {
                                    //Cannot seem to use cell names, so use cell location
                                    excelList.Add(new ShoppingCartViewModel(dr[0].ToString(), dr[1].ToString(), dr[2].ToString(), Path.Combine(extractImagesTo, dr[3].ToString()), dr[4].ToString(), null, 0.00, null));
                                }
                            }

                            var contentService  = ApplicationContext.Current.Services.ContentService;
                            var allEventsNode   = ExcelUploadUmbracoAssignedContentHelper.HomePageContent();
                            int rootId          = allEventsNode.Id;
                            var itemsForSale    = contentService.GetChildren(rootId).Where(x => x.ContentType.Alias == "accessorieItems").ToList();

                            //Delete all current nodes                      
                            foreach (var items in itemsForSale)
                            {
                                contentService.Delete(items);
                            }

                            foreach (var item in excelList)
                            {
                                string fileName             = Guid.NewGuid().ToString();
                                var content                 = contentService.CreateContent(item.Product, allEventsNode.Id,"accessorieItems");
                                IMediaService mediaService  = ApplicationContext.Current.Services.MediaService;
                                var newImage                = mediaService.CreateMedia($"{fileName}.jpeg", -1, "Image");
                                byte[] buffer               = File.ReadAllBytes(Path.GetFullPath(item.ProductUrl));
                                MemoryStream strm           = new MemoryStream(buffer);

                                newImage.SetValue("umbracoFile", $"{fileName}.jpeg", strm);
                                mediaService.Save(newImage);

                                var umbracoHelper   = new UmbracoHelper(UmbracoContext.Current);
                                var image           = umbracoHelper.Media(newImage.Id).Url;
                                string imagePath    = image.ToString();

                                content.SetValue("productId", item.ProductId);
                                content.SetValue("productTitle", item.Product);
                                content.SetValue("productPrice", item.Price);
                                content.SetValue("productImage", imagePath);
                                content.SetValue("productDescription", item.ProductDescription);
                                contentService.SaveAndPublishWithStatus(content);
                            }

                            contentService.RePublishAll();
                            library.RefreshContent();

                            Array.ForEach(Directory.GetFiles(extractImagesTo), File.Delete);
                            //Delete empty folders in media folder
                            DeleteEmptyFolder.DeleteFolder();
                        }
                    }
                }

                return true;
            }
            catch (Exception ex)
            {
                throw new ApplicationException(ex.ToString());
            }
        }

System.IO.DirectoryNotFoundException：找不到远程服务器的路径的一部分

2 个答案: