title: Fail when Facebook api request using Facebook4j
body: <p>I am trying to developing Facebook API using Facebook4J. It is success to get access_token from facebook as flow.</p>
  
  <pre><code>@RequestMapping(value="biztopia.facebook.redirectLogin.do")
  public void redirectLogin(ModelMap model, HttpServletRequest request, HttpServletResponse response, HttpSession session) {
  
      String code = request.getParameter("code");     
      Facebook facebook = (Facebook) request.getSession().getAttribute("facebook");
      String oauthCode = request.getParameter("code");
  
      try {
          facebook.getOAuthAccessToken(oauthCode);            
          AccessToken token = facebook.getOAuthAccessToken();             
          response.sendRedirect("biztopia.facebook.requestUserInfo.do");
      } catch (Exception e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
      }        
  }
  
  
  @RequestMapping(value="biztopia.facebook.requestUserInfo.do")
  public void requestUserInfo(ModelMap model, HttpServletRequest request, HttpServletResponse response, HttpSession session) {
  
      Facebook facebook = (Facebook) request.getSession().getAttribute("facebook");               
      try {           
          User user = facebook.getMe();
      }catch (Exception e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
      }
  }
  </code></pre>
  
  <p>Recieved excetion message as flow</p>
  
  <p>FacebookException{statusCode=400, response=HttpResponse{statusCode=400, responseAsString='{"error":{"message":"API calls from the server require an appsecret_proof argument","type":"GraphMethodException","code":100}}
  ', is=sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@446f4515, streamConsumed=true}, errorType='GraphMethodException', errorMessage='API calls from the server require an appsecret_proof argument', errorCode=100, errorSubcode=-1}
      at facebook4j.internal.http.HttpClientImpl.request(HttpClientImpl.java:189)
      at facebook4j.internal.http.HttpClientWrapper.request(HttpClientWrapper.java:65)
      at facebook4j.internal.http.HttpClientWrapper.get(HttpClientWrapper.java:93)
      at facebook4j.FacebookImpl.get(FacebookImpl.java:2431)
      at facebook4j.FacebookImpl.getMe(FacebookImpl.java:105)
      at facebook4j.FacebookImpl.getMe(FacebookImpl.java:101)
      at biztopia.facebook.web.FacebookController.requestUserInfo(FacebookController.java:292)</p>