package facebook4j.examples.signin;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import facebook4j.Facebook;
import facebook4j.FacebookException;
public class CallbackServlet extends HttpServlet {
private static final long serialVersionUID = 6305643034487441839L;
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Facebook facebook = (Facebook) request.getSession().getAttribute("facebook");
String oauthCode = request.getParameter("code");
try {
facebook.getOAuthAccessToken(oauthCode);
} catch (FacebookException e) {
throw new ServletException(e);
}
response.sendRedirect(request.getContextPath() + "/");
}
}