问题：
使用Google drive API转移上传文件的所有权
曹泉
-编辑2-
public bool UploadReportToGoogleDrive(Model model, byte[] ReportPDF_ByteArray, string ddlAddFilesFolder = "root", bool doNotify = true)
{
bool isErrorOccured = false;
try
{
SingletonLogger.Instance.Info("UploadReportToGoogleDrive - start");
FileList fileList = new FileList();
Google.Apis.Drive.v2.Data.File uploadedFile = new Google.Apis.Drive.v2.Data.File();
Permission writerPermission = new Permission();
string accessToken = GetAccessToken();
#region FIND REPORT FOLDER
string url = "https://www.googleapis.com/drive/v2/files?"
+ "access_token=" + accessToken
+ "&q=" + HttpUtility.UrlEncode("title='My Reports' and trashed=false and mimeType in 'application/vnd.google-apps.folder'")
;
// Create POST data and convert it to a byte array.
List<string> _postData = new List<string>();
string postData = string.Join("", _postData.ToArray());
try
{
WebRequest request = WebRequest.Create(url);
string responseString = GDriveHelper.GetResponse(request);
fileList = JsonConvert.DeserializeObject<FileList>(responseString);
SingletonLogger.Instance.Info("UploadReportToGoogleDrive - folder search success");
}
catch (Exception ex)
{
SingletonLogger.Instance.Error("UploadReportToGoogleDrive\\FIND REPORT FOLDER", ex);
isErrorOccured = true;
}
#endregion FIND REPORT FOLDER
if (fileList.Items.Count == 0)
{
#region CREATE REPORT FOLDER
url = "https://www.googleapis.com/drive/v2/files?" + "access_token=" + accessToken;
// Create POST data and convert it to a byte array.
_postData = new List<string>();
_postData.Add("{");
_postData.Add("\"title\": \"" + "My Reports" + "\",");
_postData.Add("\"description\": \"Uploaded with Google Drive API\",");
_postData.Add("\"parents\": [{\"id\":\"" + "root" + "\"}],");
_postData.Add("\"mimeType\": \"" + "application/vnd.google-apps.folder" + "\"");
_postData.Add("}");
postData = string.Join("", _postData.ToArray());
try
{
WebRequest request = WebRequest.Create(url);
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
// Set the ContentType property of the WebRequest.
request.ContentType = "application/json";
// Set the ContentLength property of the WebRequest.
request.ContentLength = postData.Length;//byteArray.Length;
// Set the Method property of the request to POST.
request.Method = "POST";
// Get the request stream.
Stream dataStream = request.GetRequestStream();
// Write the data to the request stream.
dataStream.Write(byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close();
string responseString = GDriveHelper.GetResponse(request);
Google.Apis.Drive.v2.Data.File ReportFolder = JsonConvert.DeserializeObject<Google.Apis.Drive.v2.Data.File>(responseString);
;
ddlAddFilesFolder = ReportFolder.Id;
SingletonLogger.Instance.Info("UploadReportToGoogleDrive - folder creation success");
}
catch (Exception ex)
{
SingletonLogger.Instance.Error("UploadReportToGoogleDrive\\CREATE REPORT FOLDER", ex);
isErrorOccured = true;
}
#endregion CREATE REPORT FOLDER
}
else
{
ddlAddFilesFolder = fileList.Items.FirstOrDefault().Id;
}
if (!isErrorOccured)
{
#region UPLOAD NEW FILE - STACKOVER FLOW
//Createing the MetaData to send
_postData = new List<string>();
_postData.Add("{");
_postData.Add("\"title\": \"" + "Report_" + model.id + "\",");
_postData.Add("\"description\": \"" + " report of person - " + (model.borrowerDetails.firstName + " " + model.borrowerDetails.lastName) + "\",");
_postData.Add("\"parents\": [{\"id\":\"" + ddlAddFilesFolder + "\"}],");
_postData.Add("\"extension\": \"" + "pdf" + "\",");
_postData.Add("\"appDataContents\": \"" + true + "\",");
_postData.Add("\"mimeType\": \"" + GDriveHelper.GetMimeType("Report.pdf").ToString() + "\"");
_postData.Add("}");
postData = string.Join(" ", _postData.ToArray());
byte[] MetaDataByteArray = Encoding.UTF8.GetBytes(postData);
//// creating the Data For the file
//MemoryStream target = new MemoryStream();
//myFile.InputStream.Position = 0;
//myFile.InputStream.CopyTo(target);
//byte[] FileByteArray = target.ToArray();
string boundry = "foo_bar_baz";
url = "https://www.googleapis.com/upload/drive/v2/files?uploadType=multipart" + "&access_token=" + accessToken;
WebRequest request = WebRequest.Create(url);
request.Method = "POST";
request.ContentType = "multipart/related; boundary=\"" + boundry + "\"";
// Wrighting Meta Data
string headerJson = string.Format("--{0}\r\nContent-Type: {1}\r\n\r\n",
boundry,
"application/json; charset=UTF-8");
string headerFile = string.Format("\r\n--{0}\r\nContent-Type: {1}\r\n\r\n",
boundry,
GDriveHelper.GetMimeType("Report.pdf").ToString());
string footer = "\r\n--" + boundry + "--\r\n";
int headerLenght = headerJson.Length + headerFile.Length + footer.Length;
request.ContentLength = MetaDataByteArray.Length + ReportPDF_ByteArray.Length + headerLenght;
Stream dataStream = request.GetRequestStream();
dataStream.Write(Encoding.UTF8.GetBytes(headerJson), 0, Encoding.UTF8.GetByteCount(headerJson)); // write the MetaData ContentType
dataStream.Write(MetaDataByteArray, 0, MetaDataByteArray.Length); // write the MetaData
dataStream.Write(Encoding.UTF8.GetBytes(headerFile), 0, Encoding.UTF8.GetByteCount(headerFile)); // write the File ContentType
dataStream.Write(ReportPDF_ByteArray, 0, ReportPDF_ByteArray.Length); // write the file
// Add the end of the request. Start with a newline
dataStream.Write(Encoding.UTF8.GetBytes(footer), 0, Encoding.UTF8.GetByteCount(footer));
dataStream.Close();
try
{
WebResponse response = request.GetResponse();
// Get the stream containing content returned by the server.
dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
string responseFromServer = reader.ReadToEnd();
// Display the content.
//Console.WriteLine(responseFromServer);
uploadedFile = JsonConvert.DeserializeObject<Google.Apis.Drive.v2.Data.File>(responseFromServer);
// Clean up the streams.
reader.Close();
dataStream.Close();
response.Close();
SingletonLogger.Instance.Info("UploadReportToGoogleDrive - upload to folder success");
}
catch (Exception ex)
{
SingletonLogger.Instance.Error("UploadReportToGoogleDrive\\CREATE REPORT FOLDER", ex);
isErrorOccured = true;
//return "Exception uploading file: uploading file." + ex.Message;
}
#endregion UPLOAD NEW FILE - STACKOVER FLOW
}
if (!isErrorOccured)
{
#region MAKE ADMIN ACCOUNT OWNER OF UPLOADED FILE - COMMENTED
url = "https://www.googleapis.com/drive/v2/files/" + uploadedFile.Id
+ "/permissions/"
+ uploadedFile.Owners[0].PermissionId
+ "?access_token=" + accessToken
+ "&sendNotificationEmails=" + (doNotify ? "true" : "false")
;
WebRequest request = WebRequest.Create(url);
string role = "owner", type = "user", value = "aniketpatil87@gmail.com";
// Create POST data and convert it to a byte array.
postData = "{"
+ "\"role\":\"" + role + "\""
+ ",\"type\": \"" + type + "\""
+ ",\"value\": \"" + value + "\""
+ ",\"permissionId\":\"" + uploadedFile.Owners[0].PermissionId + "\""
+ ",\"transferOwnership\": \"" + "true" + "\""
+ "}";
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
// Set the ContentType property of the WebRequest.
request.ContentType = "application/json";
// Set the ContentLength property of the WebRequest.
request.ContentLength = postData.Length;//byteArray.Length;
// Set the Method property of the request to POST.
request.Method = "POST";
// Get the request stream.
Stream dataStream = request.GetRequestStream();
// Write the data to the request stream.
dataStream.Write(byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close();
//TRY CATCH - IF TOKEN IS INVALID
try
{
string responseString = GDriveHelper.GetResponse(request);
SingletonLogger.Instance.Info("UploadReportToGoogleDrive - make admin account owner success");
}
catch (Exception ex)
{
SingletonLogger.Instance.Error("UploadReportToGoogleDrive\\MAKE ADMIN ACCOUNT OWNER OF UPLOADED FILE", ex);
isErrorOccured = true;
}
#endregion MAKE ADMIN ACCOUNT OWNER OF UPLOADED FILE
if (model.Officer != default(int))
{
#region ALLOW OFFICER TO ACCESS UPLOADED FILE
OldModels.MWUsers officer = usersBL.GetAll(model.Officer).FirstOrDefault();
url = "https://www.googleapis.com/drive/v2/files/" + uploadedFile.Id
+ "/permissions/"
//+ uploadedFile.Owners[0].PermissionId
+ "?access_token=" + accessToken
+ "&sendNotificationEmails=" + (doNotify ? "true" : "false")
;
request = WebRequest.Create(url);
role = "writer";
type = "user";
value = Officer.EMail;
// Create POST data and convert it to a byte array.
postData = "{"
+ "\"role\":\"" + role + "\""
+ ",\"type\": \"" + type + "\""
+ ",\"value\": \"" + value + "\""
//+ ",\"permissionId\":\"" + uploadedFile.Owners[0].PermissionId + "\""
//+ ",\"transferOwnership\": \"" + "true" + "\""
+ "}";
byteArray = Encoding.UTF8.GetBytes(postData);
// Set the ContentType property of the WebRequest.
request.ContentType = "application/json";
// Set the ContentLength property of the WebRequest.
request.ContentLength = postData.Length;//byteArray.Length;
// Set the Method property of the request to POST.
request.Method = "POST";
// Get the request stream.
dataStream = request.GetRequestStream();
// Write the data to the request stream.
dataStream.Write(byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close();
//TRY CATCH - IF TOKEN IS INVALID
try
{
string responseString = GDriveHelper.GetResponse(request);
SingletonLogger.Instance.Info("UploadReportToGoogleDrive - make officer writer success");
}
catch (Exception ex)
{
SingletonLogger.Instance.Error("UploadReportToGoogleDrive\\ALLOW OFFICER TO ACCESS UPLOADED FILE", ex);
isErrorOccured = true;
}
#endregion ALLOW OFFICER TO ACCESS UPLOADED FILE
}
}
if (isErrorOccured)
{
SingletonLogger.Instance.Info("UploadReportToGoogleDrive - report upload to gdrive failed");
}
else
{
//LogHelper.CreateLogEntry(UserContext.CurrentUser.UserID, "Uploaded " + myFileList.Count + " file(s) on Google Drive.", this.HttpContext.Request);
SingletonLogger.Instance.Info("UploadReportToGoogleDrive - report upload to gdrive success");
}
}
catch (Exception ex)
{
SingletonLogger.Instance.Info("UploadReportToGoogleDrive - Outer exception", ex);
isErrorOccured = true;
}
return isErrorOccured;
}
暂时还没有答案
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