Unable to access redirectAttributes while redirecting to controller action with Paramerters

Question

In Spring MVC,

When the return value contains redirect: prefix, the viewResolver recognizes this as a special indication that a redirect is needed. The rest of the view name will be treated as the redirect URL. And the client will send a new request to this redirect URL.

We can write a handler method like this to handle the redirect:

@RequestMapping(value="/foo", method = RequestMethod.POST )
public String foo(HttpServletRequest request, HttpServletResponse response, RedirectAttributes redirectAttributes)  {
    redirectAttributes.addFlashAttribute("message", "I am message");
    return "redirect:/bar";
}

Now we can access this redirectAttribute in bar() like this

@RequestMapping(value="/bar", method = RequestMethod.GET )
public String bar(HttpServletRequest request, HttpServletResponse response, Model model)  {
    String error = (String) model.asMap().get("message");
}

Normally we can access this the redirectAttribute inside bar() method, But when I specify a URL as parameterised url in return statement like this below

return "redirect:/bar?x=1&y=2";

I am unable to access the redirectAttributes

I further Inspected network in chrome and I found that while using un-parameterised url in return statement jsessionid remains same after redirect, but it does changes while using parameterised urls.

Can anyone please tell me why is this happening or am I going wrong somewhere?

Why don't you try to debug model on bar method in order to get the object you're receiving when using parameterized url? — Roni Axelrad
it just shows null..everything works fine with un-parameterised url but breaks for parameterised url — sumitkanoje

Pulkit Pulkit · Accepted Answer · 2015-12-19T18:33:35

If you want to access the value of paramater x and y in your redirect controller you need to get Parameter from request.

@RequestMapping(value="/bar", method = RequestMethod.GET )
  public String bar(HttpServletRequest request, HttpServletResponse response, Model model)  {
      System.out.println(request.getParameter("y"));
      return null;
  }

Unable to access redirectAttributes while redirecting to controller action with Paramerters

1 Answers