Tried Graph API directly for creating page, Is it the right way/possible or else we should use only HttpClient to create page.
Also I couldn't see C# code example for create page under request,
https://learn.microsoft.com/en-us/graph/api/section-post-pages?view=graph-rest-1.0#request
Errors
InvalidOperationException: Timeouts are not supported on this stream.
System.IO.Stream.get_ReadTimeout()
JsonSerializationException: Error getting value from 'ReadTimeout' on 'System.IO.MemoryStream'.
Newtonsoft.Json.Serialization.ExpressionValueProvider.GetValue(object target)
Code
var page = new OnenotePage
{
Title = "Graph API Notes Page",
Content = new MemoryStream(Encoding.UTF8.GetBytes("Created Date - " + DateTime.Now))
};
await graphClient
.Sites[siteId]
.Onenote
.Sections[sectionId]
.Pages
.Request()
.AddAsync(page);
You can use the below code to add content to OneNote page
string notesContent = $"<!DOCTYPE html><html><head><title>{NotebookTitle}</title></head><body>{NotebookContent}</body></html>";
return await GraphClient.Me.Onenote.Sections[SectionId].Pages.Request().AddAsync(notesContent, "text/html");
Related
I have a public (anyone with the link can view) file on my Google Drive and I want to use the content of it in my Android app.
From what I could gather so far, I need the fileID, the OAuth token and the client ID - these I already got. But I can't figure out what is the exact methodology of authorising the app or fetching the file.
EDIT:
Simply reading it using file.readAsLines didn't work:
final file = new File(dogListTxt);
Future<List<String>> dogLinks = file.readAsLines();
return dogLinks;
The dogLinks variable isn't filled with any data, but I get no error messages.
The other method I tried was following this example but this is a web based application with explicit authorization request (and for some reason I was never able to import the dart:html library).
The best solution would be if it could be done seamlessly, as I would store the content in a List at the application launch, and re-read on manual refresh button press.
I found several old solutions here, but the methods described in those doesn't seem to work anymore (from 4-5 years ago).
Is there a good step-by-step tutorial about integrating the Drive API in a flutter application written in dart?
I had quite a bit of trouble with this, it seems much harder than it should be. Also this is for TXT files only. You need to use files.export() for other files.
First you need to get a list fo files.
ga.FileList textFileList = await drive.files.list(q: "'root' in parents");
Then you need to get those files based on ID (This is for TXT Files)
ga.Media response = await drive.files.get(filedId, downloadOptions: ga.DownloadOptions.FullMedia);
Next is the messy part, you need to convert your Media object stream into a File and then read the text from it. ( #Google, please make this easier.)
List<int> dataStore = [];
response.stream.listen((data) {
print("DataReceived: ${data.length}");
dataStore.insertAll(dataStore.length, data);
}, onDone: () async {
Directory tempDir = await getTemporaryDirectory(); //Get temp folder using Path Provider
String tempPath = tempDir.path; //Get path to that location
File file = File('$tempPath/test'); //Create a dummy file
await file.writeAsBytes(dataStore); //Write to that file from the datastore you created from the Media stream
String content = file.readAsStringSync(); // Read String from the file
print(content); //Finally you have your text
print("Task Done");
}, onError: (error) {
print("Some Error");
});
There currently is no good step-by-step tutorial, but using https://developers.google.com/drive/api/v3/manage-downloads as a reference guide for what methods to use in Dart/Flutter via https://pub.dev/packages/googleapis: to download or read the contents of a Google Drive file, you should be using googleapis/Drive v3, or specifically, the methods from the FilesResourceApi class.
drive.files.export(), if this is a Google document
/// Exports a Google Doc to the requested MIME type and returns the exported content. Please note that the exported content is limited to 10MB.
drive.files.get(), if this something else, a non-Gdoc file
/// Gets a file's metadata or content by ID.
Simplified example:
var drive = new DriveApi(http_client);
drive.files.get(fileId).then((file) {
// returns file
});
However, what I discovered was that this Dart-GoogleAPIs library seemed to be missing a method equivalent to executeMediaAndDownloadTo(outputStream). In the original Google Drive API v3, this method adds the alt=media URL parameter to the underlying HTTP request. Otherwise, you'll get the error, which is what I saw:
403, message: Export requires alt=media to download the exported
content.
And I wasn't able to find another way to insert that URL parameter into the current request (maybe someone else knows?). So as an alternative, you'll have to resort to implementing your own Dart API to do the same thing, as hinted by what this OP did over here https://github.com/dart-lang/googleapis/issues/78: CustomDriveApi
So you'll either:
do it through Dart with your own HttpClient implementation and try to closely follow the REST flow from Dart-GoogleAPIs, but remembering to include the alt=media
or implement and integrate your own native-Android/iOS code and use the original SDK's convenient executeMediaAndDownloadTo(outputStream)
(note, I didn't test googleapis/Drive v2, but a quick examination of the same methods looks like they are missing the same thing)
I wrote this function to get file content of a file using its file id. This is the simplest method I found to do it.
Future<String> _getFileContent(String fileId) async {
var response = await driveApi.files.get(fileId, downloadOptions: DownloadOptions.fullMedia);
if (response is! Media) throw Exception("invalid response");
return await utf8.decodeStream(response.stream);
}
Example usage:
// save file to app data folder with 150 "hello world"s
var content = utf8.encode("hello world" * 150);
driveApi.files
.create(File(name: fileName, parents: [appDataFolder]),
uploadMedia: Media(Stream.value(content), content.length))
.then((value) {
Log().i("finished uploading file ${value.id}");
var id = value.id;
if (id != null) {
// after successful upload, read the recently uploaded file content
_getFileContent(id).then((value) => Log().i("got content is $value"));
}
});
I use the JavaMail Spring implementation with Velocity template engine. Everything goes well when I send the mails, the pictures are displayed normally and the styles also apply.
The problem that I encounter is that at the reception the email client displays my email as containing attachments, which are actually the images that appear in my email.
I do not understand why the images sent with the mail are seen as pieces joined by the mail client. Somebody can help me please?
This is my code :
final MimeMessage message = mailSender.createMimeMessage();
final MimeMessageHelper helper = new MimeMessageHelper(message,true, "UTF-8");
try {
helper.setFrom(getSystemAddress());
if (replyTo != null) {
helper.setReplyTo(replyTo);
}
helper.setTo(to);
helper.setSubject(subject);
helper.setText(body, isHTML);
System.out.println("Helper message factory: "+helper);
FileSystemResource res = new FileSystemResource(new File(MailHandler.class.getResource("logo-email.png").getFile()));
FileSystemResource res1 = new FileSystemResource(new File(MailHandler.class.getResource("bg-header.PNG").getFile()));
helper.addInline("cid2", res1);
helper.addInline("cid1", res);
mailSender.send(message);
I'm trying to stream audio file to Angular application where is html5 audio element and src set to my api end point (example. /audio/234). My backend is implemented with .NET Core 2.0. I have implemented already this kind of streaming: .NET Core| MVC pass audio file to html5 player. Enable seeking
Seek works if I don't seek to end of file immediately when audio starts playing. I use audio element's autoplay attribute to start playing immediately audio element has enough data. So in my situation audio element has not yet all the data when I seek so it make new GET to my API. In that situation in my backend log there is this Exception:
fail: Microsoft.AspNetCore.Server.Kestrel[13]
[1] Connection id "0HL9V370HAF39", Request id "0HL9V370HAF39:00000001": An unhandled exception was thrown by the application.
[1] System.InvalidOperationException: Response Content-Length mismatch: too few bytes written (0 of 6126919).
Here is my audio controller GET method.
byte[] audioArray = new byte[0];
//Here I load audio file from cloud
long fSize = audioArray.Length;
long startbyte = 0;
long endbyte = fSize - 1;
int statusCode = 200;
var rangeRequest = Request.Headers["Range"].ToString();
_logger.LogWarning(rangeRequest);
if (rangeRequest != "")
{
string[] range = Request.Headers["Range"].ToString().Split(new char[] { '=', '-' });
startbyte = Convert.ToInt64(range[1]);
if (range.Length > 2 && range[2] != "") endbyte = Convert.ToInt64(range[2]);
if (startbyte != 0 || endbyte != fSize - 1 || range.Length > 2 && range[2] == "")
{ statusCode = 206; }
}
_logger.LogWarning(startbyte.ToString());
long desSize = endbyte - startbyte + 1;
_logger.LogWarning(desSize.ToString());
_logger.LogWarning(fSize.ToString());
Response.StatusCode = statusCode;
Response.ContentType = "audio/mp3";
Response.Headers.Add("Content-Accept", Response.ContentType);
Response.Headers.Add("Content-Length", desSize.ToString());
Response.Headers.Add("Content-Range", string.Format("bytes {0}-{1}/{2}", startbyte, endbyte, fSize));
Response.Headers.Add("Accept-Ranges", "bytes");
Response.Headers.Remove("Cache-Control");
var stream = new MemoryStream(audioArray, (int)startbyte, (int)desSize);
return new FileStreamResult(stream, Response.ContentType)
{
FileDownloadName = track.Name
};
Am I missing some Header or what?
I didn't get this exception with .NET Core 1.1 but I'm not sure is it just coincident and/or bad testing. But if anybody has information is there something changed in .NET Core related to streaming I will appreciate that info.
Now when I research more I found this: https://learn.microsoft.com/en-us/aspnet/core/aspnetcore-2.0 look Enhanced HTTP header support- heading. It says this
If an application visitor requests content with a Range Request header, ASP.NET will recognize that and handle that header. If the requested content can be partially delivered, ASP.NET will appropriately skip and return just the requested set of bytes. You do not need to write any special handlers into your methods to adapt or handle this feature; it is automatically handled for you.
So all I need is some clean up when I move to .NET Core 1.1 to 2.0 because there is already handler for those headers.
byte[] audioArray = new byte[0];
//Here I get my MP3 file from cloud
var stream = new MemoryStream(audioArray);
return new FileStreamResult(stream, "audio/mp3")
{
FileDownloadName = track.Name
};
Problem was in Headers. I don't know exactly which header was incorrect or was my stream initialization incorrect but now It's working. I used this https://stackoverflow.com/a/35920244/8081009 . Only change I make this was renamed it as AudioStreamResult. And then I used it like this:
Response.ContentType = "audio/mp3";
Response.Headers.Add("Content-Accept", Response.ContentType);
Response.Headers.Remove("Cache-Control");
var stream = new MemoryStream(audioArray);
return new AudioStreamResult(stream, Response.ContentType)
{
FileDownloadName = track.Name
};
Notice that I pass full stream to AudioStreamResult.
var stream = new MemoryStream(audioArray);
I wrote a program that includes an embedded web browser that loads a website which have a changing part (the part changes about 2 times a week and it have no regular timing pattern) that I want to search for a particular part in the opened webpage source code after refreshing the webpage in a specified time interval.
I found many things similar to my question but this is what I want and those questions doesn't have:
search embedded webpage source (they searching the webpage without embedding, and I had to embed it because I had to login before I see the particular page)
so this is the procedure I'm trying to do:
1- open a website in embedded web browser
2- after user logged in, with a press of button in program, it hides the embedded
web browser and start to refresh the page in a time interval (like
every minute) and search if the particular code changed in the source of
that opened webpage
any other/better Ideas appreciated
thanks
Many years ago I wrote an app to reintegrate forum posts from several pages into one and I struggled with the login issue too and thought it was only possible using an embedded browser. As it turns out, it's possible to use System.Net in .NET to handle web pages that need a login as you can pull the cookies out and keep them on hand. I would suggest you do that and move away from the embedded browser.
Unfortunately I wrote the code in C# originally, but as it's .NET and is mostly classes-based, it shouldn't be too difficult to port over.
The Basic Principle
Find out what information is included in the POST when you login, which you can do in Chrome with developer mode on (F12). Convert that to a byteArray, POST it to the page, store the cookies and make another call with the cookie data later on. You will need a class variable to hold the cookies.
Code:
private void Login()
{
byte[] byteArray = Encoding.UTF8.GetBytes("username=" + username + "&password=" + password + "&autologin=on&login=Log+in"); // Found by investigation
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("yourURL");
request.AllowAutoRedirect = false;
request.CookieContainer = new CookieContainer();
request.Method = "POST";
request.ContentLength = byteArray.Length;
request.ContentType = "application/x-www-form-urlencoded";
Stream dataStream = request.GetRequestStream();
dataStream.Write(byteArray, 0, byteArray.Length);
dataStream.Close();
WebResponse response = request.GetResponse();
if (((HttpWebResponse)response).StatusCode == HttpStatusCode.Found)
{
// Well done, your login has been accepted
loginDone = true;
cookies = request.CookieContainer;
}
else
{
// If at first you don't succeed...
}
response.Close();
}
private string GetResponseHTML(string url)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.AllowAutoRedirect = false;
// Add cookies from Login()
request.CookieContainer = cookies;
request.ContentType = "application/x-www-form-urlencoded";
WebResponse response = request.GetResponse();
string sResponse = "";
StreamReader reader = null;
if (((HttpWebResponse)response).StatusCode == HttpStatusCode.OK)
{
reader = new StreamReader(response.GetResponseStream());
sResponse = reader.ReadToEnd();
reader.Close();
}
response.Close();
return sResponse;
}
Hope that helps.
I had to change to C# and I found what I was looking for:
string webPageSource = webBrowser1.DocumentText;
That gave me the source of web page opened in webBrowser1 control.
i want to load the Kepler reference Page with HttpClient like this:
string resourceAddress = _url;
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, resourceAddress);
HttpClient httpClient = new HttpClient();
// Do not buffer the response:
HttpResponseMessage response = new HttpResponseMessage();
response = await httpClient.SendAsync(request,
HttpCompletionOption.ResponseContentRead);
using (Stream responseStream = await response.Content.ReadAsStreamAsync())
{
int read = 0;
byte[] responseBytes = new byte[(Int32)responseStream.Length];
do
{
read = await responseStream.ReadAsync(responseBytes, 0, responseBytes.Length);
} while (read != 0);
}
But i think, the Page won´t be loaded complete, like without all images and iframes etc...
Downloading just the first piece of html is rarely going to be enough to give you all the elements of the page, even if you parse it and include all the linked images etc. There is also css and javascript that will bring new content into view when you open a page in a browser and getting all this yourself is going to be an effort similar to implementing your own browser. Your best bet would be to either just load the page once in a WebView control and let it cache its content or use a WebView and scan the DOM to try to get all the elements. You could also write a web service that would download the page for you and just deliver you the whole package... assuming that the page doesn't require authentication.