I have a normal Java standalone app which is trying to communicate with
a GAE app. I make use of the HttpURLConnection class and all is jiffy.
But what I am having trouble doing is sending an http POST request
(with the URLConnection class) with an authentication token returned by
Google ClientLogin. I can't seem to be able to include the token in a
meaningful way. On the server-side, what I wish to do is identify the
user who is connecting from the stand-alone Java App.
For my Client-side code, there a couple things I have tried:
1) Sending the token directly in the Authentication header
2) Sending a cookie with the token as its value
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Monaco;
color: #4d9072} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px
Monaco; color: #3834ff} p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font:
11.0px Monaco; color: #931a68} p.p4 {margin: 0.0px 0.0px 0.0px 0.0px;
font: 11.0px Monaco} p.p5 {margin: 0.0px 0.0px 0.0px 0.0px; font:
11.0px Monaco; min-height: 15.0px} span.s1 {color: #000000} span.s2
{color: #931a68} span.s3 {color: #0027cc} span.s4 {color: #4d9072}
span.s5 {color: #3834ff} span.s6 {text-decoration: underline}
//AUTHENTICATE WITH GOOGLE
CalendarService client = new
CalendarService("https://www.google.com/accounts/ClientLogin";);
try {
client.setUserCredentials(userField.getText(), passField.getText());
} catch (AuthenticationException e1) {
e1.printStackTrace();
}
//STORE TOKEN LOCALLY
String token;
UserToken auth_token = (UserToken)
client.getAuthTokenFactory().getAuthToken();
token = auth_token.getValue();
[...]
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Monaco;
color: #4d9072} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px
Monaco; color: #3834ff} p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font:
11.0px Monaco} p.p4 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px
Monaco; min-height: 15.0px} p.p5 {margin: 0.0px 0.0px 0.0px 0.0px;
font: 11.0px Monaco; color: #931a68} span.s1 {color: #000000} span.s2
{color: #931a68} span.s3 {color: #3834ff} span.s4 {text-decoration:
underline} span.s5 {color: #0027cc}
//CREATE HTTP POST REQUEST
URL url = new URL("http://localhost:8888/playerConnect";);
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setRequestMethod("POST");
//conn.setRequestProperty("Cookie", "auth=" + token);
conn.setRequestProperty("Cookie", cookie);
conn.setRequestProperty("Authorization", token);
//conn.setRequestProperty("Authorization", "Auth "+token);
conn.setRequestProperty("username", userField.getText());
conn.setDoOutput(true);
conn.connect();
//SEND DATA
ObjectOutputStream out = new ObjectOutputStream(new
BufferedOutputStream(conn.getOutputStream()));
out.writeObject(salvo);
out.flush();
out.close();
InputStreamReader in = new InputStreamReader(new
BufferedInputStream(conn.getInputStream()));
char[] string = new char[100];
in.read(string);
if(conn.getResponseCode() != 200) {
System.out.println("Succeeded");
}
else{
System.out.println("Response Code: " + conn.getResponseCode());
}
System.out.println(string);
On the server-side code, I try to get the user...
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Monaco} span.s1
{color: #931a68} span.s2 {text-decoration: underline}
public class PlayerServlet extends HttpServlet{
public void doPost(HttpServletRequest req, HttpServletResponse resp)
throws IOException{
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Monaco} p.p2
{margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Monaco; min-height:
15.0px} span.s1 {text-decoration: underline} span.s2 {color: #3834ff}
span.s3 {color: #0027cc} span.s4 {color: #931a68}
Cookie[] cookies = req.getCookies();
String cookieVal = getCookieValue(cookies,"token","null");
System.out.println("CookieVal: " + cookieVal);
CalendarService client = new
CalendarService("https://www.google.com/accounts/ClientLogin";);
client.setUserToken(cookieVal);
if (req.getUserPrincipal() != null) {
System.out.println("username: " + req.getUserPrincipal().getName());
}
else{
System.out.println("Not signed in");
}
UserService userService = UserServiceFactory.getUserService();
User user = userService.getCurrentUser();
System.out.println("From user" + user);
[...]
And in web.xml, I have a security-constraint set up:
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Monaco;
color: #4d9192} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px
Monaco} p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Monaco;
min-height: 15.0px} span.s1 {color: #009193} span.s2 {color: #000000}
span.s3 {color: #4d9192}
<servlet>
<servlet-name>playerServlet</servlet-name>
<servlet-class>battleship.PlayerServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>playerServlet</servlet-name>
<url-pattern>/playerConnect</url-pattern>
</servlet-mapping>
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Monaco;
color: #4d9192} span.s1 {color: #000000} span.s2 {color: #009193}
span.s3 {text-decoration: underline} span.Apple-tab-span
{white-space:pre}
<security-constraint>
<web-resource-collection>
<url-pattern>/playerConnect</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>*</role-name>
</auth-constraint>
</security-constraint>
I get a couple of different behaviors, depending on my web.xml file. If
I don't specify any security-constraints in web.xml, the server outputs
that user is null.
When I do specify the security constraint in web.xml, the client gets a
HTTP 200 response code, and the last print statement (of string)
outputs some HTML text. The server prints no output; it's as if there
is no connection from the server's point of view.
I've tried all sorts of things with my HttpURLConnection stuff
client-side, and nothing seems to work. Again, all I want to do is have
a user authenticate with google, and connect to my GAE app with their
login information. Thanks in advance for any helps.
--
You received this message because you are subscribed to the Google Groups
"Google App Engine for Java" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/google-appengine-java?hl=en.
