shop--7.店铺信息编辑--Controller层

在Controller层需要两个方法，一个就是获取店铺信息

getShopById

　　/**
    * 根据店铺信息获取店铺
    * @param request
    * @return
    */
   @RequestMapping(value="/getshopbyid", method=RequestMethod.GET)
   @ResponseBody
   private Map<String, Object> getShopById(HttpServletRequest request){
       Map<String, Object> modelMap = new HashMap<>();
       Long shopId = HttpServletRequestUtil.getLong( request, "shopId" );
       if(shopId > -1){//大于-1就证明前端传过来了
           try{
               Shop shop = shopService.getShopByShopId( shopId );
               List<Area> areaList = areaService.getAreaList();//因为区域信息是可以更改的，所以需要获取
               modelMap.put("shop", shop);
               modelMap.put( "areaList", areaList );
               modelMap.put( "success", true );
           } catch(Exception e){
               modelMap.put("success", false);
               modelMap.put("errMsg", e.toString());
           }
 
       }else{
           modelMap.put("success", false);
           modelMap.put( "errMsg", "empty shopId" );
       }
       return modelMap;
   }

更改店铺信息（和注册店铺相似）

　　1.先看传递过来的验证码

　　2.接受从前台传过来的shopStr的字符串

　　3.将shopStr转成Shop实体对象

　　4.前台传过来的文件流解析成CommonsMultipartFile里面去

　　5.最后将Shop对象和文件流使用Service层方法添加

　　

@RequestMapping(value = "/modifyshop", method = RequestMethod.POST)
    @ResponseBody
    private Map<String, Object> modifyShop(HttpServletRequest request) {
        Map<String, Object> modelMap = new HashMap<String, Object>();
        if (!CodeUtil.checkVerifyCode(request)) {
            modelMap.put("success", false);
            modelMap.put("error", "输入了错误的验证码");
            return modelMap;
        }
        // 1.接受并转化相应的参数，包括店铺信息以及图片信息
        String shopStr = HttpServletRequestUtil.getString(request, "shopStr");
        ObjectMapper mapper = new ObjectMapper();
        Shop shop = null;
        try {
            shop = mapper.readValue(shopStr, Shop.class);
        } catch (Exception e) {
            modelMap.put("success", false);
            modelMap.put("errMsg", e.getMessage());
            return modelMap;
        }
        CommonsMultipartFile shopImg = null;
        CommonsMultipartResolver commonsMultipartResolver = new CommonsMultipartResolver(
                request.getSession().getServletContext());
        // 如果文件上传有值的话
        if (commonsMultipartResolver.isMultipart(request)) {
            MultipartHttpServletRequest multipartHttpServletRequest = (MultipartHttpServletRequest) request;
            shopImg = (CommonsMultipartFile) multipartHttpServletRequest.getFile("shopImg");
        }//图片可上传可不上传的 非空判断可以去掉
        // 2.修改店铺信息
        if (shop != null && shop.getShopId() != null) {//确保shopId不为空
            ShopExecution se;
            try {
                // 当文件为空时 直接传入空值
                if (shopImg == null) {
                    se = shopService.modifyShop(shop, null, null);
                } else {
                    se = shopService.modifyShop(shop, shopImg.getInputStream(), shopImg.getOriginalFilename());
                }
                // se = shopService.modifyShop(shop,
                // shopImg.getInputStream(),shopImg.getOriginalFilename()); 换成了上面这个if else 判断
                if (se.getState() == ShopStateEnum.SUCCESS.getState()) {//CHECK->SUCCESS
                    modelMap.put("success", true);
                } else {
                    modelMap.put("errMsg", se.getStateInfo());
                }
            } catch (ShopOperationException e) {
                modelMap.put("success", false);
                modelMap.put("errMsg", e.getMessage());
            } catch (IOException e) {
                modelMap.put("success", false);
                modelMap.put("errMsg", e.getMessage());
            }

            return modelMap;
        } else {
            modelMap.put("success", false);
            modelMap.put("errMsg", "请输入店铺ID");
            return modelMap;
        }
        // 3.返回结果
    }

顺便在注册方法中Session

 　　通过Session获取登录后的user信息

            PersonInfo owner = (PersonInfo) request.getSession().getAttribute("user");
            shop.setOwner(owner);

　　获取user信息后设置user可操作的店铺列表

          @SuppressWarnings("unchecked")
          List<Shop> shopList = (List<Shop>) request.getSession().getAttribute("shopList");
          if (shopList == null || shopList.size() == 0) {
          shopList = new ArrayList<Shop>();
          }
          shopList.add(se.getShop());
          request.getSession().setAttribute("shopList", shopList);