get bad request error

[ArunPrkash585]

I'm new to angular,i try to uploading files but i get bad request error

[murygin]

Is there any log output..?

[ArunPrkash585]

This my client side part

upload me

myApp.service('fileUpload', ['$http', function ($http) {
this.uploadFileToUrl = function(file, uploadUrl){
var fd = new FormData();
fd.append('file', file);
$http.post(uploadUrl, fd, {
transformRequest: angular.identity,
headers: {'Content-Type': undefined}
})
.success(function(){
})
.error(function(){
});
}
}]);

myApp.controller('myCtrl', ['$scope', 'fileUpload', function($scope, fileUpload){

$scope.uploadFile = function(){
    var file = $scope.myFile;
    console.log('file is ' + JSON.stringify(file));
    var uploadUrl = "/customers/17/artifacts";
    fileUpload.uploadFileToUrl(file, uploadUrl);
};

}]);
This my server side part

controller part

@RequestMapping(value = "/customers/{accountNumber}/artifacts", method = RequestMethod.POST)
void uploadCustomerArtifact(@PathVariable Long accountNumber, @RequestParam("artifact") MultipartFile uploadfile, HttpServletRequest request, HttpServletResponse response) {
log.info("RestController UploadFile Called");

    artifactService.uploadArtifacts(accountNumber, uploadfile, request, response);
}

service part

@transactional
void uploadArtifacts(Long accountNumber, MultipartFile uploadfile, HttpServletRequest request, HttpServletResponse response)
{
BufferedOutputStream stream
try {

        Validate.assertNotNull(accountNumber,"field.required","Customer account number is mandatory");

        Customer existingCustomer = customerRepository.findByAccountNumber(accountNumber);
        Validate.assertNotNull(existingCustomer, "not.exist", "Customer account number doesn't exist");

        Artifact myArtiFact = new Artifact();
        myArtiFact.name = uploadfile.getOriginalFilename();
        myArtiFact.type = uploadfile.getContentType();
        myArtiFact.content = uploadfile.bytes

        String contentType = request.getServletContext().getMimeType(FilenameUtils.getName(uploadfile.getOriginalFilename()));

        println "contentType : "+contentType

        existingCustomer.addArtifact(myArtiFact);

        customerRepository.save(existingCustomer);
        log.info("UploadArtifacts Success");

    }
    catch (Exception e) {
        throw e;
    }
    finally
    {
        if(stream != null)
        {
            stream.close();
        }
    }       
}