Spring Redirct to a new Page From Ajax Calling

Hi My Problem is when I try to redirect a page In Spring Controller Insted of returning to new Page it Return to The response of the calling Browser.

@RequestMapping(value="grandTicketDetail",method=RequestMethod.GET)
public ModelAndView grandTicketDetail(@RequestParam("refernceId") String refernceId,ModelAndView model){
    //model.addAttribute("refernceId", refernceId);
    model.addObject("refernceId", refernceId);
    model.setViewName("view/secure/grandTicketDetail");
    //return "view/secure/grandTicketDetail";
    return model;

}

Now this code generate exception Invalid target for Validator I previously try with return type string But It return as a response.

How to do ?