Is it possible to upload and convert an HTML file to PDF using Google Drive API without user interaction?
Yes, it is, with two requests. You can import the file as a Google Docs, then export it to PDF. Using the Drive API.
https://developers.google.com/drive/v2/reference/files/insert
https://developers.google.com/drive/v2/reference/files/get
worked for me (Drive docs only...)
ByteArrayContent mediaContent = new ByteArrayContent("text/html", "HTML PAGE HERE".getBytes());
File body = new File();
body.setTitle("test.html");
body.setMimeType("text/html");
Insert request = null;
try
{
request = service.files().insert(body, mediaContent);
request.setConvert(true);
File file = request.execute();
HttpResponse resp = service.getRequestFactory().buildGetRequest(new GenericUrl(file.getExportLinks().get("application/pdf"))).execute();
OutputStream out = new FileOutputStream(getExternalFilesDir(null).getAbsolutePath() + "/test.pdf");
byte[] buf = new byte[1024];
int len;
while ((len = resp.getContent().read(buf)) > 0)
{
out.write(buf, 0, len);
}
out.close();
}
catch (IOException e)
{
e.printStackTrace();
}
Related
I have a function to upload files to Google Drive.
I tried to upload with a pdf file, It's working.
public Task<String> createFilePDF(String filePath){
return Tasks.call(mExecutor,()->{
File fileMetaData = new File();
fileMetaData.setName("DinotesDemo");
java.io.File file = new java.io.File(filePath);
FileContent mediaContent = new FileContent("application/pdf",file);
File myFile = null;
try {
myFile = mDriveService.files().create(fileMetaData,mediaContent).execute();
}catch (Exception e){
}
if (myFile == null){
throw new IOException("Null result");
}
return myFile.getId();
});
}
And now, I need to upload the realm file to drive. What should I do?
Thanks very much!!
hello i'm write a http web server in my app.
I used this code
http://developer.nokia.com/community/wiki/A_simplistic_HTTP_Server_on_Windows_Phone
this procedure works but not have a extentions of file in http response
return a file name without extention (.zip)
private async Task<StringBuilder> HandleRequest(StreamSocket socket)
{
//Initialize IO classes
DataReader reader = new DataReader(socket.InputStream);
reader.InputStreamOptions = InputStreamOptions.Partial;
DataWriter writer = new DataWriter(socket.OutputStream);
writer.UnicodeEncoding = Windows.Storage.Streams.UnicodeEncoding.Utf8;
//handle actual HTTP request
String request = await StreamReadLine(reader);
string[] tokens = request.Split(' ');
if (tokens.Length != 3)
{
throw new Exception("invalid http request line");
}
string httpMethod = tokens[0].ToUpper();
string httpUrl = tokens[1];
//read HTTP headers - contents ignored in this sample
while (!String.IsNullOrEmpty(await StreamReadLine(reader))) ;
try
{
if (httpUrl == "DOWNLOADZIP")
{
using (IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForApplication())
{
String content = null;
Stream stream;
byte[] data;
IsolatedStorageFileStream sri = storage.OpenFile("CompressedFiles.zip", FileMode.Open, FileAccess.Read);
if (null != sri)
{
stream = sri;
data = new byte[stream.Length];
stream.Read(data, 0, data.Length);
writer.writebytes(data);
}
}
}
}
catch (Exception ex)//any exception leads to an Internal server error
{
writer.WriteString("HTTP/1.0 500 Internal server error\r\n");
writer.WriteString("Connection: close\r\n");
writer.WriteString("\r\n");
writer.WriteString(ex.Message);
}
}
await writer.StoreAsync();//write data actually to the network interface
socket.Dispose();
return null;
}
this is a solutions
ret.AppendLine("HTTP/1.0 200 OK");
ret.AppendLine("Content-Type: text/html");
ret.AppendLine("Connection: close");
ret.AppendLine("");
ret.AppendLine("Content-Disposition: attachment; filename=myfile.zip");
I want upload a file (any type) on a server.
I have my file which is saved like this (I use FileAssociation)
await SharedStorageAccessManager.CopySharedFileAsync(ApplicationData.Current.LocalFolder, "fileToSave" + fileext, NameCollisionOption.ReplaceExisting, NavigationContext.QueryString["filetoken"]);
Then I get the saved file
StorageFolder folder = ApplicationData.Current.LocalFolder;
var file = await folder.GetFileAsync("fileToSave" + fileext);
Stream data = Application.GetResourceStream(new Uri(file.Path, UriKind.Relative)).Stream;
string filename = System.IO.Path.GetFileName(file.Path);
ServerFunctions.UploadFile(filename,data);
Then I start the Upload
internal void UploadFile(string fileName,Stream data)
{
WebClient web = new WebClient();
if (!string.IsNullOrEmpty(dataRequestParam.AuthentificationLogin))
{
System.Net.NetworkCredential account = new NetworkCredential(dataRequestParam.AuthentificationLogin, dataRequestParam.AuthentificationPassword);
web.Credentials = account;
}
web.AllowReadStreamBuffering = true;
web.AllowWriteStreamBuffering = true;
web.OpenWriteCompleted += (sender, e) =>
{
PushData(data, e.Result);
e.Result.Close();
data.Close();
};
web.OpenWriteAsync(dataRequestParam.TargetUri,"POST");
}
private void PushData(Stream input, Stream output)
{
byte[] buffer = new byte[4096];
int bytesRead;
while ((bytesRead = input.Read(buffer, 0, buffer.Length)) != 0)
{
output.Write(buffer, 0, bytesRead);
}
}
The web server is supposed to send me as a response a xml with an error code or succes code inside.
None error is thrown but it doesnt work.And I don't understand why the e.result is a stream object. As I said the server should return a string...(xml file)
Could you bring me some explannations of what is happening in my code and if it will work with all types of files ?
Thanks
I think part of the problem here is that you're attempting to get this to behave like a streaming protocol when it seems you intend a request/response type architecture. For those purposes, you should consider working with a WebRequest object.
Bear with me as I fully qualify the namespace of the objects used inline, so it may get a little verbose, but I want you to know where to find these things.
internal async void UploadFile(string fileName, System.IO.Stream data)
{
// Specify URI, method, and credentials for the request
System.Net.WebRequest web = System.Net.HttpWebRequest.CreateHttp(dataRequestParam.TargetUri);
web.Method = "POST";
if (!string.IsNullOrEmpty(dataRequestParam.AuthenticationLogin))
{
web.Credentials = new System.Net.NetworkCredential(dataRequestParam.AuthenticationLogin, dataRequestParam.AuthenticationPassword);
}
// Create the request payload from the provided stream
System.IO.Stream requestStream =
await System.Threading.Tasks.Task<System.IO.Stream>.Factory.FromAsync(web.BeginGetRequestStream, web.EndGetRequestStream, null);
await data.CopyToAsync(requestStream);
// Get a response from the server
System.Net.WebResponse response =
await System.Threading.Tasks.Task<System.Net.WebResponse>.Factory.FromAsync(web.BeginGetResponse, web.EndGetResponse, null);
// Possibly parse the response with an XmlReader (example only)
System.Xml.XmlReader reader = System.Xml.XmlReader.Create(response.GetResponseStream());
string responseText = reader.ReadInnerXml(); // TODO: Real work here
}
The one oddity here is using the Task factory to create a task from the begin and end methods from getting both the request stream and the response. This makes it much simpler to consume these methods as you get a Task back which can be awaited for its return object, which you can then manipulate directly.
I'm not sure what form your response from the server takes on success versus failure, so I've simply shown how to create an XML reader to parse XML from the resulting stream. You can do whatever parsing is necessary yourself on these lines, but this should at least give you a look at what your server is returning in response.
The final code I use.
WebRequest web = HttpWebRequest.CreateHttp(dataRequestParam.TargetUri);
web.ContentType = dataRequestParam.ContentType;
web.Method = "POST";
web.ContentLength = data.Length;
if (!string.IsNullOrEmpty(dataRequestParam.AuthentificationLogin))
{
web.Credentials = new NetworkCredential(dataRequestParam.AuthentificationLogin, dataRequestParam.AuthentificationPassword);
}
using (var requestStream = await Task<Stream>.Factory.FromAsync(web.BeginGetRequestStream, web.EndGetRequestStream, web))
{
await data.CopyToAsync(requestStream);
}
WebResponse responseObject = await Task<WebResponse>.Factory.FromAsync(web.BeginGetResponse, web.EndGetResponse, web);
var responseStream = responseObject.GetResponseStream();
var sr = new StreamReader(responseStream);
string received = await sr.ReadToEndAsync();
return received;
}
I created a document in google drive. I want to upload a new revision for the same document using google drive android sdk. I tried the code like,
try{
// First retrieve the file from the API.
File file = service.files().get(fileId).execute();
java.io.File fileContent = new java.io.File("sdcard0/temp/test.doc");
FileContent mediaContent = new FileContent("application/vnd.google-apps.document", fileContent);
File updatedFile = service.files().update(getID(), file, mediaContent).execute();
} catch (IOException e1) {
Log.d("","An error occurred: " + e1); //No i18n
} catch (Exception e){
Log.d("","EXCEPTION IN SAVING"+e); //No i18n
}
But the content looks like corrupted in docs.google.com like
Please guide me if am doing anything wrong.
Note: the same code works well for uploaded document.
You cannot use those revisions for native formats like google docs. Those have their own apis to modify them. For example spreadsheets has the spreadsheet feed api.
You can create a new revision for a Google Docs/Spreadsheet format using the convert parameter in the update request.
Following your code modified to enable conversion while uploading (not tested but confident it's correct)
try{
// First retrieve the file from the API.
File file = service.files().get(fileId).execute();
java.io.File fileContent = new java.io.File("sdcard0/temp/test.doc");
FileContent mediaContent = new FileContent("application/msword", fileContent); //Changed the mime type to original
File updatedFile = service.files().update(getID(), file, mediaContent)
.setConvert(true) //Convert the file while uploading
.execute();
} catch (IOException e1) {
Log.d("","An error occurred: " + e1); //No i18n
} catch (Exception e){
Log.d("","EXCEPTION IN SAVING"+e); //No i18n
}
I was just curious, is it possible to have direct network transfers in c#, without local caching.
e.g.
I have response stream which represents GoogleDrive file and request stream to upload file to another GoogleDrive account.
At that momment I can download file to local pc and next upload it to the google drive. But is it possible to upload it directly from one google drive to another or, at least, start uploading before full download will be completed.
Thank
Yes you can, with Google Drive api you download file into a stream and you keep it in memory so you can upload it to another google drive account after login.
You get your token on first account and download a file keeping it in a stream.
THen you authenticate on other google drive account and upload the file using the stream.
PS: When you are inserting the file on the second drive account, instead of getting
the byte[] array reading the file from disk you get the byte array from the stream you have in memory.
File Download Example:
public static System.IO.Stream DownloadFile(
IAuthenticator authenticator, File file) {
if (!String.IsNullOrEmpty(file.DownloadUrl)) {
try {
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(
new Uri(file.DownloadUrl));
authenticator.ApplyAuthenticationToRequest(request);
HttpWebResponse response = (HttpWebResponse) request.GetResponse();
if (response.StatusCode == HttpStatusCode.OK) {
return response.GetResponseStream();
} else {
Console.WriteLine(
"An error occurred: " + response.StatusDescription);
return null;
}
} catch (Exception e) {
Console.WriteLine("An error occurred: " + e.Message);
return null;
}
} else {
// The file doesn't have any content stored on Drive.
return null;
}
File insert example:
private static File insertFile(DriveService service, String title, String description, String parentId, String mimeType, String filename) {
// File's metadata.
File body = new File();
body.Title = title;
body.Description = description;
body.MimeType = mimeType;
// Set the parent folder.
if (!String.IsNullOrEmpty(parentId)) {
body.Parents = new List<ParentReference>()
{new ParentReference() {Id = parentId}};
}
// File's content.
byte[] byteArray = System.IO.File.ReadAllBytes(filename);
MemoryStream stream = new MemoryStream(byteArray);
try {
FilesResource.InsertMediaUpload request = service.Files.Insert(body, stream, mimeType);
request.Upload();
File file = request.ResponseBody;
// Uncomment the following line to print the File ID.
// Console.WriteLine("File ID: " + file.Id);
return file;
} catch (Exception e) {
Console.WriteLine("An error occurred: " + e.Message);
return null;
}
}