Sending object as json key using angularJs $http in spring controller returns null

Question

I am trying to send json objectfrom javascript to the Spring controller. I am using angularJs $http post for that. I am getting the lastName as null when I send the key as obejct. However, when I send the string as hard-coded value, the value shows up in the controller. Here is the controller code:

@RequestMapping(value="/edit", method= RequestMethod.POST)
@ResponseBody
    public void editInformation(@RequestBody UserDetails userDetails){
        LOGGER.debug("THE LASTNAME IS: "+userDetails.getLastName());
        //codes.....

    }

Here is the angularJs code:

$fieldProperty =$(this).attr("name");
$inputValue =$(this).val();

$http.post("/app/edit", {$fieldProperty : $inputValue}).success(function(result){
                alert("Success "+result)
            }).error(function(data, status){
                //$log.info("The error is: "+data+ " and the error status code is: "+status)
                alert("failure"+" and the data is: "+data+ " and the stis "+status)
            });

Sending {$fieldProperty : $inputValue} as JSON returns userDetails.getLastName() as null. However, sending {"lastName" : $inputValue} returns the proper value. I checked with alert($fieldProperty) and it returns lastName though. I am using Google Gson library.

Is there something I am missing here. I would appreciate your help. Thank you.

ngCoder · Accepted Answer · 2016-09-20 05:46:00Z

1

To set $fieldProperty u have to define the object first. This declaration ({$fieldProperty : $inputValue}) adds the key '$fieldProperty' to the Json Obj. Thats why you are getting null for lastName in Spring Controller. U can use this way

$fieldProperty =$(this).attr("name");
$inputValue =$(this).val();
var params = {};
params[$fieldProperty] = $inputValue;
$http.post("/app/edit", params).success(function () {
      // Success Callback
});

edited Sep 20, 2016 at 5:46

ngCoder

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answered Sep 20, 2016 at 2:19

Sasank Sunkavalli

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