shop--8.商品类别--批量操作--删除（后端）

dao层

/**
     * 根据productCategoryId和shopId删除商品类别
     * @param productCategoryId
     * @param shopId
     * @return
     */
    public int deleteProductCategory(@Param("productCategoryId") long productCategoryId,
                                     @Param("shopId") long shopId);

　　

<delete id="deleteProductCategory" parameterType="java.lang.Long">
        DELETE
        FROM product_category
        WHERE
        product_category_id=#{productCategoryId}
        AND
        shop_id=#{shopId}
    </delete>

　　

service层

    /**
     * 将此商品类别下的商品的类别id置为空，在删除掉该商品类别
     * @param productCategoryId
     * @param shopId
     * @return
     */
    public ProductCategoryExecution deleteProductCategory(long productCategoryId, long shopId);

　　

impl

　　 @Override
    @Transactional
    public ProductCategoryExecution deleteProductCategory(long productCategoryId, long shopId) {
        //将此商品类别下的商品的商品类别置为null

        try{
            int effectNum = productCategoryDao.deleteProductCategory( productCategoryId, shopId );
            if(effectNum <= 0){
                throw new ProductCategoryException( "商品类别删除失败" );
            }else{
                return new ProductCategoryExecution(ProductCategoryEnum.SUCCESS);
            }
        }catch (Exception e){
            throw new ProductCategoryException("delete productCategory Error: " + e.getMessage() );
        }
    }

　　

controller层

/**
     * 批量删除商品类别
     * @param productCategoryId
     * @param request
     * @return
     */
    @RequestMapping(value="/removeproductcategory", method=RequestMethod.POST)
    @ResponseBody
    public Map<String, Object> removeProductCategory(Long productCategoryId, HttpServletRequest request){
        Map<String, Object> modelMap = new HashMap<>();
        if(productCategoryId != null && productCategoryId > 0){
            try{
                /*Shop currentShop = (Shop) request.getSession().getAttribute("currentShop");*/
                Shop currentShop = new Shop();
                currentShop.setShopId(1L);
                ProductCategoryExecution productCategoryExecution =
                        productCategoryService.deleteProductCategory( productCategoryId, currentShop.getShopId() );
                if(productCategoryExecution.getState() == ProductCategoryEnum.SUCCESS.getState()){
                    modelMap.put("success", true);
                }else{
                    modelMap.put( "success", false );
                    modelMap.put("errMsg", productCategoryExecution.getStateInfo());
                }

            } catch(ProductCategoryException e){
                modelMap.put( "success", false );
                modelMap.put("errMsg", e.toString());
                return modelMap;
            }
        } else{
            modelMap.put( "success", false );
            modelMap.put("errMsg", "请至少选择一个商品类别");
        }
        return modelMap;
    }