Java Spring skicka mapp med filer till frontend ?

@CrossOrigin(origins = "http://localhost:3000")
    @GetMapping(value = "gallery/test",produces = MediaType.IMAGE_JPEG_VALUE)
    public @ResponseBody byte[] getImage() throws IOException {

        return IOUtils.toByteArray(getClass()
            .getResourceAsStream("/gallery/test/images.jpg"));
    }

  const [image, setImage] = useState("");

  const onClickHandler = async () => {
    const result = await fetch("http://localhost:8080/gallery/test");
    const blob = await result.blob();
    const url = URL.createObjectURL(blob);
    setImage(url);

  };