Spring MVC with ajax file upload and MultipartFile

Question

I have an issue using Ajax upload with Spring 3 MVC. I understand that I have to configure multipartResolver bean in spring config, which I\'ve done. Than I can have control

Answer 1

my solution:

@RequestMapping(value = "/create/upload", method = RequestMethod.POST, consumes="multipart/form-data", produces="application/json")
@ResponseBody()
public String handleImageUpload(@RequestParam(value="qqfile", required=true) MultipartFile[] files, 
        @ModelAttribute(value="files") List filesSession) throws IOException, FileUploadException {

    if (files.length > 0) {
        filesSession.addAll(Arrays.asList(files));
        // store the bytes somewhere
        return  "{\"success\": true}";
    }
    else {
        return "{\"success\": false}";
    }
}

@RequestMapping(value = "/create/upload", method = RequestMethod.POST, consumes="application/octet-stream", produces="application/json")
@ResponseBody()
public String handleImageUploadApplication(HttpServletRequest request, 
        @ModelAttribute(value="files") List filesSession) throws IOException, FileUploadException {

    if (request.getInputStream() != null) {
        // creamos el fichero temporal
        File file = File.createTempFile("file", "valumns",
                RepositoryData.getRepositoryData());
        FileOutputStream fos = new FileOutputStream(file);
        // copiamos contenido
        Streams.copy(request.getInputStream(), fos, true);
        //TODO: 
        //filesSession.addAll(Arrays.asList(files));
        // store the bytes somewhere
        return  "{\"success\": true}";
    }
    else {
        return  "{\"success\": true}";
    }
}

@ExceptionHandler(Exception.class)
@ResponseStatus(value = HttpStatus.SERVICE_UNAVAILABLE)
public void handleException(Exception ex) {
    log.error("Ocurrio un error en el album", ex);
}