Spring MVC + GWT : Redirect Issue - spring

Question

I am using Spring annotated MVC framework in an app which I am developing.
Following is the issue I am facing:
I have Controller which does a redirect, after a POST:
#RequestMapping(value = "/emdm-viewer-redirect.do", method = RequestMethod.POST)
public ModelAndView getMetricKeysAndRedirect(#RequestParam Object jsonObject, Model model)
{
ModelAndView modelAndView = new ModelAndView("redirect:/mdm-viewer.do");
.....
.....
....//make some service calls and populate value1
...
modelAndView.addobject("param1", value1);
return modelAndView;
}
I have another controller which is mapped to URL mdm-viewer.do (The redirect URL mentioned above):
#RequestMapping(value = "/mdm-viewer.do", method = RequestMethod.GET)
public String getMDMViewer(Model model) {
return "mdmViewer"; //returns a mdmViewer.jsp
}
Please note that the mdmviewer.jsp is a GWT entrypoint which is in classpath.
I have my firebug window open which tells me that a GET request was made for mdm-viewer.do, but it gives me a blank response. In fact, it does not redirect to the new jsp and stays on the same page from where the POST request was made.
However, if I copy the firebug URL and open it in a new window of my browser, I see the expected results.
Any ideas what I am doing wrong here? Tried to google it a lot, but can't find a similar issue anywhere.

Answer 1

Eventually, I returned a ModelAndView back from the POST method using a
#ResponseBody
And in my GWT Module, I used the response.getText() output to do a
#Override
public void onResponseReceived(Request request, Response response) {
if (200 == response.getStatusCode()) {
JSONObject jsonObject = (JSONObject) JSONParser.parse(response.getText());
String viewName = jsonObject.get("viewName").isString().stringValue();
JSONObject jsonParams = jsonObject.get("model").isObject();
Set<String> chartKeys = jsonParams.keySet();
String redirectURL = viewName + "?";
for (String keyString : chartKeys) {
redirectURL = redirectURL + keyString + "=" + jsonParams.get(keyString).isString().stringValue() + "&";
}
Window.open(GWT.getHostPageBaseURL() + redirectURL, "_self", "");
}
}