Simple bug fix in spring file upload.

Required MultipartFile parameter 'file' is not present in spring 4.3.1 I am using spring 4.3.1 and I am going to upload file using ng-file-upload library. this is my javascript code and when I connect the javascript code to php server, it works well. var promise = [login to view URL]({ url: url + "upload", method: 'POST', file: file, ignoreLoadingBar: true }).success(function(response) { [login to view URL] = [login to view URL]; [login to view URL] = [login to view URL]; }).error(function(response) { $rootScope.$broadcast('veil:hide', {}); }); And I appended [login to view URL] and [login to view URL] in /web-inf/lib folder. e And I added multipartResolver in [login to view URL] file. <bean id="multipartResolver" class="[login to view URL]"> <property name="maxUploadSize" value="1000000000" /> </bean> And this is my controller class. @ResponseBody @RequestMapping(value = "/upload", method = [login to view URL]) public void upload(@RequestParam("file") MultipartFile file) throws Exception { if (file == null || [login to view URL]()) { throw new Exception("No file was sent."); } } But when I upload a file, I get such error. Required MultipartFile parameter 'file' is not present How can I fix this? Please help me. thank you for viewing.