CODEWITHSUNDEEP
jqueryjsonajaxspringspring-mvc
sree
sree

Reputation: 902

ajax json not passing values to spring controller

I am sending an Json object to the controller using ajax.

$.ajax({
         url:  "/cart/add.json",
         type: "POST",
         data:{ 'json': event.data},          

    });

and the controller

@RequestMapping(value = "/cart/add.json", method = RequestMethod.POST)
public String addToCartJson(@RequestParam("json") final String jsonString, final Model model,
        final BindingResult bindingErrors)

I am getting 400 bad request.

Error: "HTTP Status 400 - Required String parameter 'json' is not present"

Any Inputs? Thanks,In advance

Upvotes: 0

Views: 733

Answers (2)

Yasemin çidem
Yasemin çidem

Reputation: 623

Server side want to string parameter but client side send to object. JSON.stringfy will be used converts object to string.To bind a json you will need to create a single class holding all your parameters and use the @RequestBody annotation instead of @RequestParam.

Ajax method is rewriting:

$.ajax({
         url:  "/cart/add.json",
         type: "POST",
         processData: false,
          data:  JSON.stringify({
               "json":  event.data
      }),

Controller action part:

@RequestMapping(value = "/cart/add", method = RequestMethod.POST)
    public void addEvent(@RequestBody EventData eventData){ 
    }

Upvotes: 2

NightsWatch
NightsWatch

Reputation: 467

You are not passing the parameter json, you can try the below;

$.ajax({
            url:  "/cart/add.json",
            type: "POST",
            data:{ 'json=':event.data}
        });

Upvotes: 1

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