List<OCategory>Category = productService.getShopCategories(11122233); for(int i = 0; i < Category.size(); i++) { OCategory category = Category.get(i); System.out.println("分類ID:"+category.getId()+" ?"+"分類名稱:"+category.getName()); }Map<Long,OItem>map = productService.getItemsByCategoryId(category.getId());