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How to send GET request with google OAuth2 and Java to script.google.com web page?

GET is working for me but I get google services authorization page when I send it. I read guides from google but still don't understand how to use Credentials right.
This thing is for managing script files itself and have nothing to do with my problem :/
Would be decent if it is possible in Java

After sign in google you will be redirected on redirect page with google code. Redirect page could be set in google private user console. When you will get google code you could use code for obtaining jwt with GoogleAuthorizationCodeFlow
for example
GoogleAuthorizationCodeTokenRequest googleAuthorizationCodeTokenRequest = codeFlow.newTokenRequest(code)
.setRedirectUri(redirectUrl);
try {
GoogleTokenResponse googleTokenResponse = googleAuthorizationCodeTokenRequest.execute();
} catch (IOException e) {
throw new ExternalAuthenticationException("Invalid google 'code' parameter (disposable)");
}

HtmlUnit can't find forms on website

At the following website I try to access the login and password forms with HtmlUnit: https://zof.interreport.com/diveport#
However this very simple javascript returns an empty list [].
void homePage() throws Exception{
final WebClient webClient = new WebClient(BrowserVersion.CHROME);
final HtmlPage page = webClient.getPage("https://zof.interreport.com/diveport#");
System.out.println(page.getForms());
}
So somehow HtmlUnit doesn't recognize the forms on the page. How can I fix this?

At first: you only show some java code but you talk about javascript - is there anything missing?
Regarding the form. The page you are trying to test is one of these pages that doing some work on the client side. This implies, that after the page is loaded, the real page/dom is created inside your browser by invoking javascript. When using HtmlUnit you have to take care of that. In simple cases it is sufficient to wait for the javacript to be processed.
This code works for me:
final WebClient webClient = new WebClient(BrowserVersion.CHROME);
final HtmlPage page = webClient.getPage("https://zof.interreport.com/diveport#");
webClient.waitForBackgroundJavaScriptStartingBefore(5000);
System.out.println(page.getForms());
Take care to use the latest SNAPSHOT build of HtmlUnit.

I have not worked on that API but here is the trick
Open same page in your browser by disabling the JavaScript. It is not working.
This means the page loading its content using some JavaScript dom operations.
If you can not get html here there must be some way out in API you are using.
Check with the HtmlUnit api documentation. The class JAVADOC
There is method
public ScriptResult executeJavaScript(String sourceCode)
The key here is if API you are using will not execute the JavaScript on its won and you have to code for it.

Accessing OneNote API from Java

I am interested in writing a Java application that can access my OneNote notebooks via the OneNote API. I am not sure how to gain access to that API from within Java. Can anybody point me to an example of how to get started here? I use Eclipse as my development environment.

This as straightforward process.
The 3 steps would be:
1) create a OneNote application on the OneNote developper's page. More info here https://dev.onedrive.com/app-registration.htm. This is a one time action.
2) your java application should then provide an authentification mechanism and a tolken-refresh mechanism.
See this post for more info on the authentification mechanism part : Getting a OneNote token with Java. This post is about the OAuth 2.0 flow 'Authorization code grant flow'. More info here https://msdn.microsoft.com/en-us/library/hh243647.aspx#flows
3) your java application calls adhoc API Rest methods to retreive the needed informations.
Example to retrieve all your notebooks (using OkHttp for Http requests):
private final static String NOTEBOOKS_ENDPOINT = "https://www.onenote.com/api/v1.0/me/notes/notebooks";
public Notebooks readAllNoteBooks() {
try {
if (client == null)
client = new OkHttpClient();
Request request = createOneNoteRequest(a_valid_tolken, NOTEBOOKS_ENDPOINT);
Response response = client.newCall(request).execute();
JsonObject content = UrlHelper.parseResponse(response);
System.out.println(content);
return Notebooks.build(content.get("value"));
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
public static Request createOneNoteRequest(String mAccessToken, String url) {
Request.Builder reqBuilder = new Request.Builder();
reqBuilder.url(url);
reqBuilder.header("Authorization", "Bearer " + mAccessToken);
return reqBuilder.build();
}
NoteBooks and NoteBook are 2 tiny classes matching the key attributes from the OneNote objects.

Microsoft has provided REST apis for accessing One note functionalities like creating and accessing notes. See OneNote Rest API reference.

singrass,
In addition to the above replies, the Android OneNote API sample may also help you. There is no OneNote application class that you can create (unless you want to create your own). You simply call the API through the HttpClient. If you are unfamiliar on how to call REST APIs in Java in general, this thread may help you.
-- James

Is it possible to use File class (Java) in ajax Request (JavaScript)?

I have a simple question.
I have a piece of code to upload a picture to my server. This code is developped in Javascript. It's a simple Javascript code which append File object (javascript) to my ajax request.
this.addPicture = function(file) {
var frm = new FormData();
frm.append("picture", file);
var xhr = new XMLHttpRequest();
xhr.open("POST", "/myserverurl", true);
xhr.send(frm);
It it possible to use File Object (Java) in this request ?
Thanks a lot

No. Java and Javascript are completely different languages, and you can't use Java APIs in a Web page's Javascript. You might want to look at the HTML FileUpload form control for this purpose.

Basically you wouldn't be able to use java inplace of javascript if that's the question.
You could sent the request as mentioned in your code above and then either handle it as a file object on the server side code in java

Sending an OWA logon form from Java

I am interested in a way to programmatically log into OWA (Microsoft Outlook Web Access - a web-based email client) from Java code and retrieve nothing more than the inbox unread count -- I can read this number from the inbox web page's HTML source - but the problem is getting there - logging in.
Essentially, from looking at the HTML source of the OWA logon page, I can see that there is an HTML form element:
<form action="owaauth.dll" method="POST" name="logonForm" autocomplete="off">
that gets submitted by a button element within it:
<input type="submit" class="btn" value="Log On" onclick="clkLgn()">
From investigating the clkLgn() script, I find that it sends a cookie to the document so it may not be crucial:
function clkLgn()
{
if(gbid("rdoPrvt").checked)
{
var oD=new Date();
oD.setTime(oD.getTime()+2*7*24*60*60*1000);
var sA="acc="+(gbid("chkBsc").checked?1:0);
var sL="lgn="+gbid("username").value;
document.cookie="logondata="+sA+"&"+sL+";expires="+oD.toUTCString();
}
}
Basically, how can I send this form?
The following code is my attempt at the problem, I can make the HTTP connection - but I can't seem to be able to POST the correct HTTP request.
URL urlObject = new URL(url);
HttpURLConnection hConnection = (HttpURLConnection)urlObject.openConnection();
HttpURLConnection.setFollowRedirects(true);
hConnection.setDoOutput(true);
hConnection.setRequestMethod("POST");
PrintStream ps = new PrintStream(hConnection.getOutputStream());
ps.print("username="+username+"&password="+password);
ps.close();
hConnection.connect();
if( HttpURLConnection.HTTP_OK == hConnection.getResponseCode() )
{
InputStream is = hConnection.getInputStream();
OutputStream os = new FileOutputStream("output.html");
int data;
while((data=is.read()) != -1)
{
os.write(data);
}
is.close();
os.close();
hConnection.disconnect();
}
It just keeps returning the same logon HTML page.

That JavaScript does certainly an important thing: it adds a cookie to the document. A decent HTTP client is required to send all valid cookies along the headers on every HTTP request. You should do the same programmatically. You can add headers using URLConnection#setRequestProperty().
Further, there are several things to take into account as well when submitting forms programmatically: you should not skip any hidden input fields (input type="hidden"), those might be of relevance. You should also send the name=value pair of the submit button you'd like to press programmatically along as request parameter. Finally, you should not be using & to concatenate parameter pairs, but &.
Note that I don't guarantee that it will finally work, that OWA thing might have some other prevention against bots, but it should solve the as far spotted problems.
See also:
How to use URLConnection?
By the way, have you considered just connecting it using a SMTP/IMAP API like JavaMail?

Why go through a form? MS recently open sourced a Java client for their Exchange server API.
http://blogs.office.com/2014/08/28/open-sourcing-exchange-web-services-ews-java-api/
https://github.com/OfficeDev/ews-java-api