当参数作为RequestBody和RequestParam发送时，sprig控制器无法识别所发送的请求

Question

I am working on spring application with angularjs. I am trying to send JSON object as a RequestBody and a RequestParam information from angularjs to spring controller, but the spring controller is not recognizing the request sent from angularjs.

js:

(function () {
    'use strict';
    var myApp = angular.module('app');
    myApp.controller('fileWithJSONController', function ($scope, fileUploadService) {

        $scope.uploadFile = function () {
            var file = $scope.myFile;
            var uploadUrl = myApplnURL + '/showInfo/getInformationTest';", //Url of web service
             $scope.emailData = [
                    {   'from':$scope.fromEmail,
                        'ccEmail': $scope.ccEmail,
                        'subject': $scope.subject,
                        'message':$scope.message,
                    }
              ];
               var fd=new FormData();
                angular.forEach($scope.files,function(file){
                       fd.append('file',file);
                  });
            promise = fileWithJSONService.sendInformation(fd, $scope.emailData, uploadUrl);

            promise.then(function (response) {
                $scope.serverResponse = response;
            }, function () {
                $scope.serverResponse = 'An error has occurred';
            })
        };
    });

})();

(function () {
    'use strict';
    var myApp = angular.module('app');
    myApp.service('fileWithJSONService', function ($http, $q) {

        this.sendInformation = function (fd, emailData, uploadUrl) {

            var deffered = $q.defer();
            $http.post(uploadUrl, fd, emailData, {
                transformRequest: angular.identity,
                headers: {'Content-Type': undefined}

            }).success(function (response) {
                deffered.resolve(response);

            }).error(function (response) {
                deffered.reject(response);
            });

            return deffered.promise;
        }
    });
})();

Spring controller:

 @RequestMapping(value = "/getInformationTest", method = RequestMethod.POST, headers = {"content-type=multipart/form-data"})
    public
    @ResponseBody
    String sendInformationTest(@RequestParam("file") List<MultipartFile> multiPartFileList,@RequestBody("emailData") EmailDataDTO emailDataDTO){                         
         System.out.println("In spring controller");
         System.out.println("single file " +multiPartFileList.size());
    }

--EDITED--

PS: The path to the spring controller is correct, because when i pass only one argument from angularjs to spring controller then it is hitting the spring controller. Sample code below:

js:

 ....
 $http.post(uploadUrl, fd , {
                    transformRequest: angular.identity,
                    headers: {'Content-Type': undefined}

                })...

spring controller:

@RequestMapping(value = "/getInformationTest", method = RequestMethod.POST, headers = {"content-type=multipart/form-data"})
    public
    @ResponseBody
    String sendInformationTest(@RequestParam("file") List<MultipartFile> multiPartFileList){                         
         System.out.println("In spring controller");
         System.out.println("single file " +multiPartFileList.size());
    }

o/p:

In spring controller
single File 2

----EDITED--- I tried to change the RequestBody to RequestParam as shown in below 2 ways but both the ways are not hitting the spring controller.

First trial: js:

 ....
 $http.post(uploadUrl, fd ,emailData, {
                    transformRequest: angular.identity,
                    headers: {'Content-Type': undefined}

                })...

spring controller:

@RequestMapping(value = "/getInformationTest", method = RequestMethod.POST, headers = {"content-type=multipart/form-data"})
    public
    @ResponseBody
    String sendInformationTest(@RequestParam("file") List<MultipartFile> multiPartFileList,@RequestParam("emailData") List<EmailDataDTO> emailData){                         
         System.out.println("In spring controller");
      }

Trial2: js:

..
  $scope.emailData = [
                        {   'from':$scope.fromEmail,
                            'ccEmail': $scope.ccEmail,
                            'subject': $scope.subject,
                            'message':$scope.message,
                        }
                  ];
                   var fd=new FormData();
                     fd.append("emailData",$scope.emailData);
                    angular.forEach($scope.files,function(file){
                           fd.append('file',file);
                      });
                promise = fileWithJSONService.sendInformation(fd, $scope.emailData, uploadUrl);
 ....
  ....//service call
     $http.post(uploadUrl, fd , {
                        transformRequest: angular.identity,
                        headers: {'Content-Type': undefined}

                    })...

--EDITED--- I have CommonsMultipartResolver configured in servlet.xml

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="maxUploadSize" value="10000000"/>
    </bean>

Answer 1

In server if you sending data in the form of JSON then change headers = {"content-type=multipart/form-data"} to headers = {"content-type=application/json"} and check CORS enabled or not. Change your headers from front end headers: {'Content-Type': undefined} to headers: {'Content-Type': "content-type=multipart/form-data"}