Spring Content Negotiation / OpenCSV: получение пустого CSV

Я использую Spring Content Negotiation и OpenCSV для вывода CSV файла клиенту.

Итак, у меня есть этот контроллер:

@RequestMapping(value = { "", "/" }, method = RequestMethod.GET, produces = "text/csv")
@esponseStatus(HttpStatus.OK)
public Model getCustomersView(HttpServletRequest request, Model model)
    throws InvalidBusinessContractDataException {
    Customer[] customers = customerService.findCustomers();
    return model.addAttribute("customers", customers);
}

И этот Media Type Translator:

@Component("viewNameTranslator")
public final class MediaTypeRequestToViewTranslator implements
        RequestToViewNameTranslator {
    @Autowired
    private ContentNegotiationManager contentNegotiationManager;

    private DefaultRequestToViewNameTranslator defaultTranslator = new DefaultRequestToViewNameTranslator();

    // a list of media types to ignore - not output on the translated view
    private List<String> ignoredTypes = Arrays.asList("text/html");

    @Override
    public String getViewName(HttpServletRequest request) {
        // first resolve the media type (see below)
        String mediaType = resolveMediaType(request);

        // delegate to the default translator to get the view name
        String viewName = defaultTranslator.getViewName(request);

        // concatenate the resolved media type to the default name and return it
        return viewName + mediaType;
    }

    private String resolveMediaType(HttpServletRequest request) {
        try {
            // use the content negotiation manager to resolve the media type
            // from the request. The manager does it
            // according to its own search path and preferences - using the
            // suffix, using the Accept header and
            // preferring one of them. The result would always be a single type
            // or none at all, but it returns a list
            List<MediaType> types = contentNegotiationManager
                    .resolveMediaTypes(new ServletWebRequest(request));

            // resolve to a single type
            String type = types == null || types.size() == 0 ? "" : types
                    .get(0).toString();

            // if it not in the ignored media types - prepend a semi-colon and
            // return it
            return ignoredTypes.contains(type) ? "" : ";" + type;
        } catch (HttpMediaTypeNotAcceptableException e) {
            return "";
        }
    }
}

И эта точка зрения:

@Component("customers;text/csv")
public final class CustomerCsvView implements View {
    @Override
    public String getContentType() {
        return "text/csv";
    }

    @Override
    public void render(Map<String, ?> model, HttpServletRequest request,
            HttpServletResponse response) throws Exception {
        response.setContentType("text/csv");
        Customer[] customers = (Customer[]) model.get("customers");


        CSVWriter writer = new CSVWriter(new OutputStreamWriter(response
                .getOutputStream()));

        writer.writeNext(new String[] {"id", "fName", "lName"});
        for (Customer c : customers) {
                    System.out.println("FOO");
            writer.writeNext(new String[] {
                    new Long(c.getCustomerId()).toString(), c.getFirstName(), c.getLastName() });
        }
    }
}

Когда я нажимаю на этот контроллер с браузером, дважды появляется "FOO" на моей консоли, открывается диалоговое окно сохранения файла с загружаемым тестовым /CSV файлом и составляет 0 байт.

Это как изменения ответа не сохраняются.

Что?