CODEWITHSUNDEEP
javaspring-mvc
Blankman
Blankman

Reputation: 267320

Return a string when return type is a ModelAndView

Is it possible to return a string when my action is returning a ModelAndView?

public ModelAndView register(....) {

   ModelAndView mav = new ModelAndView(...);


   if( // some wierd case) {
         // halt and return a string response
   }


   return mav;
}

This isn't for a normal case, I know I should redirect to another page and display some sort of message, but this is a unusual case where I don't really want to do that or at least I want to know if I have this option to do this.

Upvotes: 2

Views: 1149

Answers (4)

Chris Gerken
Chris Gerken

Reputation: 16400

I would throw an Exception. You can create a subclass of Exception for this case - a subclass that can hold and answer a string. In this way you can return a String in special situations, but answer a ModelAndView most other times. 

public ModelAndView register(....) throws WierdCaseException {

   ModelAndView mav = new ModelAndView(...);


   if( // some wierd case) {
         // halt and return a string response
         throw new WierdCaseException("the string to be returned");
   }


   return mav;
}

Upvotes: 1

Rahul Sahu
Rahul Sahu

Reputation: 284

You can mention return type as String rather than ModelAndView. returned string name should be a name of jsp file.

Upvotes: 0

Langfo
Langfo

Reputation: 430

If you are returning a ModelAndView, are you populating your view with values on the server side. Can you return the string as part of the ModelAndView? 

mav.addObject("myString", "this is the string for the weird case");

Other option is to get the HttpServletResponse object's PrintWriter or ServletOutputStream and write the string out and then return a null ModelAndView.

Upvotes: 0

Alex
Alex

Reputation: 11579

You can use annotation @ResponseBody on your method.

Upvotes: 0

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