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I have the below spring rest API :

@RequestMapping(method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public ResponsePack getPacks(HttpServletRequest request, @RequestParam(value = "effDate", required = false) String effDate, @RequestParam(value = "cardType", defaultValue = "*") String cardType, @Valid @ModelAttribute Wrapper requestParamWrapper) {

effDate and cardType are the two params passed to this API (both are optional).

What I'm trying to do is set a default value of * to cardType if nothing is passed.

I can see that the String cardType has got the correct default value. How do i do something similar for the requestParamWrapper's cardType (in the model attribute) , i.e setting the default value * for cardType when the param is not passed.

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    Why should it. The request param doesn't influence the binding. Commented Sep 15, 2017 at 9:34
  • duplicate of stackoverflow.com/questions/12296642/… Commented Sep 15, 2017 at 9:43
  • How do I do that binding ? Commented Sep 15, 2017 at 9:43
  • What is Wrapper? Is that your own class? You can set defaults using the set-method for that field. Commented Sep 15, 2017 at 10:37
  • @JackFlamp , Yeah my custom class, and yes I'm currently using setter. Just looking for any alternate annotations or something? Commented Sep 15, 2017 at 12:22
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