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I am trying to implement OAuth 2.0 implicit grant from java desktop client application using SkyDrive REST API. I use the following code:
Desktop.getDesktop().browse(new URL(st.toString()).toURI());
JOptionPane.showMessageDialog(null, "Press ok to continue once you have authenticated.");
my code opens web browser and ask users to signin and then SkyDrive sends access token to the browser url in the following form:
https://login.live.com/oauth20_desktop.srf?lc=1033#access_token=EwAwAq1DBAAUlbRW.....
What I want to do is to read this access token from my java program. I tried to read httpconnection from console:
HttpURLConnection con = (HttpURLConnection) url.openConnection();
BufferedReader reader = new BufferedReader( new InputStreamReader(url.openStream()));
while(reader.readLine()!=null){
System.out.println(reader.readLine());
but it seems that java httpurlconnection does not handle javascript response. It replies:
<html dir="..... Windows Live ID requires JavaScript to sign in. This web browser either does not support JavaScript, or scripts are being blocked......<body onload="evt_LoginHostMobile_onload(event);">
So, Is there any way to retrieve the access token directly from java?
887
I had the same problem. After hours of brainstorming, I have finally found a solution. I use the JavaFX library to create a WebView. Then you can intercept location change.
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.layout.BorderPane;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebEvent;
import javafx.scene.web.WebView;
import javafx.stage.Stage;
public class Authenticate extends Application {
static final String APP_ID = "...";
static final String REDIRECT_URL = "https://login.live.com/oauth20_desktop.srf";
static final String RESPONSE_TYPE = "token";
static final String SCOPE = "wl.signin%20wl.offline_access";
private Scene scene;
@Override
public void start(final Stage stage) throws Exception {
final String url = "https://login.live.com/oauth20_authorize.srf?client_id="+APP_ID
+"&scope="+SCOPE+"&response_type="+RESPONSE_TYPE+"&oauth_callback=oob&redirect_uri="+REDIRECT_URL;
BorderPane borderPane = new BorderPane();
WebView browser = new WebView();
WebEngine webEngine = browser.getEngine();
webEngine.load(url);
borderPane.setCenter(browser);
webEngine.setOnStatusChanged(new EventHandler<WebEvent<String>>() {
public void handle(WebEvent<String> event) {
if (event.getSource() instanceof WebEngine) {
WebEngine we = (WebEngine) event.getSource();
String location = we.getLocation();
if (location.startsWith(REDIRECT_URL) && location.contains("access_token")) {
try {
URL url = new URL(location);
String[] params = url.getRef().split("&");
Map<String, String> map = new HashMap<String, String>();
for (String param : params) {
String name = param.split("=")[0];
String value = param.split("=")[1];
map.put(name, value);
}
System.out.println("The access token: "+map.get("access_token"));
stage.hide();
} catch (MalformedURLException e) {
e.printStackTrace();
}
}
}
}
});
// create scene
stage.setTitle("Skydrive");
scene = new Scene(borderPane, 750, 500);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
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