public ErrorResponse updateCategory(List<Categories> categories) {
   for (Categories category : categories) {
     if (categoriesMapper.checkCategories(category).size() != 0) {
       return new ErrorResponse.Builder(1, "更新失败").build();
     }
     categoriesMapper.updateCategory(category);
   }
   return new ErrorResponse.Builder(0, "OK").build();
 }
 public ErrorResponse addCategory(List<Categories> categories) {
   for (Categories category : categories) {
     if (categoriesMapper.checkCategories(category).size() != 0) {
       return new ErrorResponse.Builder(1, "类别已存在").build();
     }
     categoriesMapper.addCategoory(category);
   }
   logger.info("插入数据成功,共" + categories.size() + "条");
   return new ErrorResponse.Builder(0, "OK").build();
 }
 public List<Categories> getCategories() {
   return categoriesMapper.getCategories();
 }
 public ErrorResponse delCategory(String cate_ids) {
   for (String cate_id : cate_ids.split(",")) {
     categoriesMapper.delCategory(Integer.parseInt(cate_id));
   }
   return new ErrorResponse.Builder(0, "OK").build();
 }