Multipart Upload to Spring Rest using angular factory service and $resource

Question

I'm using AngularJS to communicate with a RESTful web service (running with spring boot), using $resource. I'm trying to upload some files and send form fields within a same multipart post request but i am getting the following error:

"Unsupported Media Type" exception: "org.springframework.web.HttpMediaTypeNotSupportedException" message: "Content type 'application/xml' not supported" path: "/study/upload" status: 415

here is my view form :

<form method="post" enctype="multipart/form-data" ng-submit="submit()">
  <table>
    <tr><td>File to upload:</td><td><input type="file" name="file" ng-model="form.file"/></td></tr>
    <tr><td>Name:</td><td><input type="text" name="name" ng-model="form.name"/></td></tr>
    <tr><td></td><td><input type="submit" value="Upload"  /></td></tr>
  </table>
</form>

here is the view controller:

$scope.submit=function(){
    GalleryService.upload({file: $scope.form.file, name: $scope.form.name}, function(data) {
         console.log("Success ... " + status);
    }, function(error) {
         console.log(error);
    });
}

gallery.service :

(function() {

'use strict';

angular .module('ekellsApp') .factory('GalleryService', GalleryService);

function GalleryService($resource, restApi) {

return $resource(restApi.url + '/study/:action', {},{
  save: {method: 'POST', params: {action: 'save'}},
  getAll: {method: 'GET', params: {action: 'getAll'},isArray:true},
  upload: {method: 'POST', params: {action: 'upload'}, transformRequest: angular.identity,headers: { 'Content-Type': undefined }}


});

}

})();

and here is the REST controller:

@RequestMapping(value = "/upload",method = RequestMethod.POST,headers = "content-type=multipart/*")
public String handleFileUpload(@RequestParam("name") String name,
                               @RequestParam("file") MultipartFile file,
                               RedirectAttributes redirectAttributes) {
    if (name.contains("/")) {
        redirectAttributes.addFlashAttribute("message", "Folder separators not allowed");
        return "redirect:upload";
    }
    if (name.contains("/")) {
        redirectAttributes.addFlashAttribute("message", "Relative pathnames not allowed");
        return "redirect:upload";
    }

    if (!file.isEmpty()) {
        try {
            BufferedOutputStream stream = new BufferedOutputStream(
                    new FileOutputStream(new File("user/bouhuila/" + name)));
            FileCopyUtils.copy(file.getInputStream(), stream);
            stream.close();
            redirectAttributes.addFlashAttribute("message",
                    "You successfully uploaded " + name + "!");
        }
        catch (Exception e) {
            redirectAttributes.addFlashAttribute("message",
                    "You failed to upload " + name + " => " + e.getMessage());
        }
    }
    else {
        redirectAttributes.addFlashAttribute("message",
                "You failed to upload " + name + " because the file was empty");
    }

    return "redirect:upload";
}

Stefan Isele - prefabware.com · Accepted Answer · 2016-04-11 18:47:59Z

0

I cannot see what

 GalleryService.upload

is doing, but it looks like you are not really sending the form to the server, but only some fields. In this case

enctype="multipart/form-data"

would not be used, that could explain the error you are getting.

Have a look in the developer tools in your browser, which request is actually sent to your server and which content type it is using..

answered Apr 11, 2016 at 18:47

Stefan Isele - prefabware.com

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