@Controller
public class I18nController {
        private static final ObjectMapper objectMapper = new ObjectMapper();

        @RequestMapping(value="/core/i18n.js", method = RequestMethod.GET)
        void generateJs(HttpServletRequest request, HttpServletResponse response, Locale locale) {
                response.setContentType("application/x-javascript; charset=utf-8");

                // TODO: add utf-8 support
                ResourceBundle rb = ResourceBundle.getBundle("messages", locale);
                Map<String, String> messages = Maps.newHashMap();
                for (String key : rb.keySet()) {
                        messages.put(key, rb.getString(key));
                }

                try {
                        String output = "var i18n = " + objectMapper.writeValueAsString(messages) + ";";
                        response.getOutputStream().write(output.getBytes(Charset.forName("utf-8")));
                } catch (IOException e) {
                        throw new RuntimeException(e);
                }
        }
 
}