Question

我正在使用Google API .Net客户端库通过使用服务帐户的Google Drive API上传到Google云端硬盘。当我从Visual Studio（调试）尝试时，这种方法很有效，甚至在我在本地IIS上部署它时也能正常工作。

但是当我在我的服务器（Microsoft Server 2012，IIS 8.5）上部署文件时，文件不会上传，也不会抛出任何异常。这是一段代码：

byte[] byteArray = System.IO.File.ReadAllBytes(uploadFile);
Logger.LoggingService.LogError("GoogleHelper", "Is byteArray null  :" + (byteArray == null)); // Line to check if bytearray is null, I am getting false in log.
Logger.LoggingService.LogError("GoogleHelper", "ByteArray length  :" + byteArray.Length); // Getting actual length here.
System.IO.MemoryStream stream = new System.IO.MemoryStream(byteArray);

FilesResource.InsertMediaUpload request = DriveService.Files.Insert(body, stream, GetMimeType(uploadFile));
request.Upload();
return request.ResponseBody;

我得到Null作为回报。上面的代码在try块内，catch正在记录异常，但没有抛出异常。

我已将IIS用户的完全访问权限授予此文件夹。

有人遇到过同样的问题吗？任何指向解决方案的指针都是受欢迎的。

更新

它适用于除Office文件之外的所有文件。由于XLSX等在google驱动器上看不正常，我修改了MIME类型，如下所示：

Google.Apis.Drive.v2.Data.File body = new Google.Apis.Drive.v2.Data.File();                    
body.Title = System.IO.Path.GetFileName(uploadFile);
body.Description = description;
body.MimeType = GetMimeType(uploadFile, false);
body.Parents = new List<ParentReference>() { new ParentReference() { Id = parent } };
byte[] byteArray = System.IO.File.ReadAllBytes(uploadFile);
System.IO.MemoryStream stream = new System.IO.MemoryStream(byteArray);
FilesResource.InsertMediaUpload request = DriveService.Files.Insert(body, stream, GetMimeType(uploadFile));
request.ResponseReceived += request_ResponseReceived;
request.Upload();
return request.ResponseBody;

请参阅我已将GetMimeType调用两次body.MimeType = GetMimeType(uploadFile, false);和DriveService.Files.Insert(body, stream, GetMimeType(uploadFile))，以便该文件正确上传到Google云端硬盘上，并且她是我的方法GetMimeType：

private string GetMimeType(string fileName, bool ignoreExtension = true)
    {
        string mimeType = "application/unknown";
        string ext = System.IO.Path.GetExtension(fileName).ToLower();

        if (ignoreExtension == false)
        {
            switch (ext)
            {
                case ".ppt":
                case ".pptx":
                    mimeType = "application/vnd.google-apps.presentation";
                    break;
                case ".xls":
                case ".xlsx":
                    mimeType = "application/vnd.google-apps.spreadsheet";
                    break;
                case ".doc":
                case ".docx":
                    mimeType = "application/vnd.google-apps.document";
                    break;
                default:
                    Microsoft.Win32.RegistryKey regKey = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey(ext);
                    if (regKey != null && regKey.GetValue("Content Type") != null)
                        mimeType = regKey.GetValue("Content Type").ToString();
                    break;
            }
        }
        else
        {
            Microsoft.Win32.RegistryKey regKey = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey(ext);
            if (regKey != null && regKey.GetValue("Content Type") != null)
                mimeType = regKey.GetValue("Content Type").ToString();
        }


        return mimeType;
    }

Answer 1

我不确定这是不是问题。我没有生产IIS服务器，我无法测试它。我怀疑问题可能是mime类型，我不确定它是如何在本地系统上运行而不是你的生产系统但是尝试这个代码。如果它不起作用我可以删除答案。

确保添加

request.Convert = true;

这告诉驱动器将文件转换为驱动器格式，而不仅仅是上传xls。

代码

private static string GetMimeType(string fileName)
        {
            string mimeType = "application/unknown";
            string ext = System.IO.Path.GetExtension(fileName).ToLower();
            Microsoft.Win32.RegistryKey regKey = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey(ext);
            if (regKey != null && regKey.GetValue("Content Type") != null)
                mimeType = regKey.GetValue("Content Type").ToString();
            return mimeType;
        }

        /// <summary>
        /// Uploads a file
        /// Documentation: https://developers.google.com/drive/v2/reference/files/insert
        /// </summary>
        /// <param name="_service">a Valid authenticated DriveService</param>
        /// <param name="_uploadFile">path to the file to upload</param>
        /// <param name="_parent">Collection of parent folders which contain this file. 
        ///                       Setting this field will put the file in all of the provided folders. root folder.</param>
        /// <returns>If upload succeeded returns the File resource of the uploaded file 
        ///          If the upload fails returns null</returns>
        public static File uploadFile(DriveService _service, string _uploadFile, string _parent) {

            if (System.IO.File.Exists(_uploadFile))
            {
                File body = new File();
                body.Title = System.IO.Path.GetFileName(_uploadFile);
                body.Description = "File uploaded by Diamto Drive Sample";
                body.MimeType = GetMimeType(_uploadFile);
                body.Parents = new List<ParentReference>() { new ParentReference() { Id = _parent } };

                // File's content.
                byte[] byteArray = System.IO.File.ReadAllBytes(_uploadFile);
                System.IO.MemoryStream stream = new System.IO.MemoryStream(byteArray);
                try
                {
                    FilesResource.InsertMediaUpload request = _service.Files.Insert(body, stream, GetMimeType(_uploadFile));
                    request.Convert = true;
                    request.Upload();
                    return request.ResponseBody;
                }
                catch (Exception e)
                {
                    Console.WriteLine("An error occurred: " + e.Message);
                    return null;
                }
            }
            else {
                Console.WriteLine("File does not exist: " + _uploadFile);
                return null;
            }           

        }

从Google drive sample project翻录的代码我刚刚添加了转换。

Google Drive API无法从IIS上传文件

1 个答案: