@RequestMapping("/spec.html")
  public ModelAndView showProductSpec(@RequestParam("name") String name, ModelAndView mv) {

    Product product = new Product();
    product.setName(name);
    BillOfMaterials bom = productsService.getProductBillOfMaterials(product);

    mv.addObject("bom", bom);
    mv.setViewName("productsSpec");
    return mv;
  }