ASP.NET:System.UnauthorizedAccessException - 拒绝访问路径

我有一个ASP.NET Web应用程序,它执行以下操作:

读取Excel文件.

excel文件中将包含一个指向Internet上某个位置的图像URL.

程序读取每个图像URL并将其存储到Web服务器中的临时文件夹中.

然后,应用程序调整图像的大小(更改宽度和高度).

最后,应用程序将该图像保存到另一个文件夹.

我收到以下异常:

System.Net.WebException:WebClient请求期间发生异常.---> System.UnauthorizedAccessException:拒绝访问路径'\ abcserver\target03\3111\35644\www.testing.com\web\content\images\TempStorage\tempImage.jpg'.在System.IO .__ Error.WinIOError(Int32 errorCode,String maybeFullPath)at System.IO.FileStream.Init(String path,FileMode mode,FileAccess access,Int32 rights,Boolean useRights,FileShare share,Int32 bufferSize,FileOptions options,SECURITY_ATTRIBUTES secAttrs) System.Net.WebClient.DownloadFile(Uri地址,String fileName)的System.IO.FileStream..ctor(String路径,FileMode模式,FileAccess访问)中的,String msgPath,Boolean bFromProxy)---内部异常堆栈跟踪结束---
在
uploadexceldata.UploadExcelData(String fileName)的ProcessImage.GetFileFromUrl(String imageFileUrl,String newFileName)

 foreach (DataRow dr in dt.Rows) // Reading each excel row
            {

                if (dr[0].ToString() != "")
                {
                    id= "";
                    path = "";
                    manuId = "";


                    id= dr[0].ToString();
                    path = dr[1].ToString();
                    fileNameOnly = iProImg.GetFileNameOnly(path);
                    objDb.openConnection();
                    strSqlGroupInfo = "select ManufacturerID from  manufacturers where id='" + id+ "'";

                    dTblManu = objDb.BuildDT(strSqlGroupInfo); // To Fill data to Datatable
                    objDb.closeConnection();
                    if (dTblManu.Rows.Count > 0)
                    {
                        manuId = dTblManu.Rows[0][0].ToString();
                    }

                    if (manuId != "")
                    {
                        tempUploadPath = "images/TempStorage/";
                        tempUploadPath = Server.MapPath(tempUploadPath);
                        if (!Directory.Exists(tempUploadPath))
                        {
                            Directory.CreateDirectory(tempUploadPath);
                        }
                        tempFilePath = tempUploadPath + "\\tempImage.jpg";
                        tempFilePath = tempFilePath.Replace("/", "\\");

                        previewPath = Server.MapPath("images/previews/" + manuId);
                        thumbNailPath = Server.MapPath("images/thumbnails/" + manuId);

                        if (!Directory.Exists(previewPath))
                        {
                            Directory.CreateDirectory(previewPath);
                        }
                        if (!Directory.Exists(thumbNailPath))
                        {
                            Directory.CreateDirectory(thumbNailPath);
                        }
                        fileNameOnly = "\\preview" + id+ ".jpg";
                        fileNameOnly = fileNameOnly.Replace("/", "\\");
                        previewPath = previewPath + fileNameOnly;
                        tempPartialPathP = "images\\previews\\" + manuId + fileNameOnly;

                        fileNameOnly = "\\thumbnail" + id+ ".jpg";
                        thumbNailPath = thumbNailPath + fileNameOnly;
                        tempPartialPathT = "images\\thumbnails\\" + manuId + fileNameOnly;


                        try
                        {

                            iProImg.GetFileFromUrl(path, tempFilePath);
                            rowCounter++;
                            iProImg.ReSizeImage(tempFilePath, previewPath, previewSize);
                            iProImg.ReSizeImage(previewPath, thumbNailPath, thumbNailSize);

                        }
                        catch (Exception ec)
                        {

                            errorRowCount++;
                            iLog.LogErrorToFile("uploadExcel", ec.ToString(), "path : " + path + ",tempFilePath :" + tempFilePath);


                        }
                        finally
                        {
                            if(File.Exists(tempFilePath))
                            {
                            File.Delete(tempFilePath);
                            }
                        }
                    } // If manuid!=""
                }  //if (dr[0].ToString() != "")

有没有人对如何修复此异常有任何建议？

尝试为您正在读取/保存文件的.Net用户设置访问权限为"完全控制".