6商品编辑功能的实现

6.1 前端信息

• 返回的数据结构：TaotaoResult
• 请求的url：/item/save
• 请求类型与提交参数：$("#itemAddForm").serialize()将表单序列号为key-value形式的字符串以post 的形式将表单的内容提交。

6.2.ItemServiceImpl

@Override
    public TaotaoResult updateItem(TbItem item, String desc, String itemParam) throws Exception {

        TbItemExample example = new TbItemExample();
        TbItemExample.Criteria criteria= example.createCriteria();
        Long itemId = item.getId();
        criteria.andIdEqualTo(itemId);
        TbItem oldItem = itemMapper.selectByPrimaryKey(itemId);
        //更新商品信息
        item.setStatus((byte) 1);
        item.setCreated(oldItem.getCreated());
        item.setUpdated(new Date());
        itemMapper.updateByExample(item,example);
        //更新商品描述信息
        TaotaoResult result = updateItemDesc(itemId,desc);
        if(result.getStatus()!=200) {
            throw new Exception();
        }
        //更新商品规格参数
        result = updateItemParamItem(itemId,itemParam);
        if(result.getStatus()!=200) {
            throw new Exception();
        }
        return TaotaoResult.ok();
    }



    public TaotaoResult updateItemDesc(Long itemId, String desc) throws Exception {
        TbItemDescExample example = new TbItemDescExample();
        TbItemDescExample.Criteria criteria = example.createCriteria();
        criteria.andItemIdEqualTo(itemId);
        TbItemDesc itemDesc = itemDescMapper.selectByPrimaryKey(itemId);

        itemDesc.setUpdated(new Date());
        itemDesc.setItemDesc(desc);
        itemDescMapper.updateByExample(itemDesc,example);
        return TaotaoResult.ok();

    }

    public TaotaoResult updateItemParamItem(Long itemId, String param) throws Exception {
        TbItemParamItem itemParamItem = itemParamItemMapper.selectByPrimaryKey(itemId);
        if(itemParamItem==null) {
            return TaotaoResult.ok();
        }
        itemParamItem.setUpdated(new Date());
        itemParamItem.setParamData(param);
        TbItemParamItemExample example = new TbItemParamItemExample();
        TbItemParamItemExample.Criteria criteria = example.createCriteria();
        criteria.andItemIdEqualTo(itemId);
        itemParamItemMapper.updateByExample(itemParamItem, example);

        return TaotaoResult.ok();
    }

6.3 Controller

@RequestMapping(value = "/update",method = RequestMethod.POST)
    @ResponseBody
    public TaotaoResult updateItem(TbItem item,String desc,String itemParams) throws Exception{
        TaotaoResult result = itemService.updateItem(item,desc,itemParams);
        return result;

    }

7商品删除功能的实现

7.1 前端信息

• 返回的数据结构：TaotaoResult
• 请求的url：/item/delete
• 请求类型与提交参数：post请求，ids

7.1.ItemServiceImpl

@Override
    public TaotaoResult deleteItemById(long itemId) throws Exception {
        itemMapper.deleteByPrimaryKey(itemId);
        itemDescMapper.deleteByPrimaryKey(itemId);
        itemParamItemMapper.deleteByPrimaryKey(itemId);
        return TaotaoResult.ok();
    }

7.2 Controller

@RequestMapping(value = "/delete",method = RequestMethod.POST)
    @ResponseBody
    public TaotaoResult updateItem(@RequestParam String ids) throws Exception{

        String[] list = ids.split(",");

        for(String i:list){
            Long itemId = Long.valueOf(i);
            TaotaoResult result = itemService.deleteItemById(itemId);
            if(result.getStatus()!=200){
                return TaotaoResult.build(500,"删除失败，一个或多个未被刪除");
            }
        }
        return TaotaoResult.ok();
    }