shop--10.商品--商品编辑（后端）--Controller层
主要逻辑：
- 根据前端url中productId ,调用service层的接口获取product信息，以便前端能在商品编辑页面展示对应的数据
- 修改商品
1 /** 2 * 通过商品id获取商品信息 3 * 4 * @param productId 5 * @return 6 */ 7 @RequestMapping(value="/getproductbyid",method = RequestMethod.GET) 8 @ResponseBody 9 private Map<String, Object> getProductById(@RequestParam Long productId){ 10 Map<String, Object> modelMap = new HashMap<String, Object>(); 11 //非空判断 12 if(productId > -1) { 13 //获取商品信息 14 Product product = productService.getProductById(productId); 15 //获取该店铺下的商品类别列表 16 List<ProductCategory> productCategoryList = productCategoryService.getProductCategoryList(product.getShop().getShopId()); 17 modelMap.put("product", product); 18 modelMap.put("productCategoryList", productCategoryList); 19 modelMap.put("success", true); 20 }else { 21 modelMap.put("success", false); 22 modelMap.put("errMsg", "empty productId"); 23 } 24 return modelMap; 25 } 26 27 @RequestMapping(value="/modifyproduct",method=RequestMethod.POST) 28 private Map<String, Object> modifyProduct(HttpServletRequest request){ 29 Map<String, Object> modelMap = new HashMap<String,Object>(); 30 //是商品编辑时候调用还是上下架操作的时候调用 31 //若为前者则进行验证码判断，后者则跳过验证码判断 32 boolean statusChange = HttpServletRequestUtil.getBoolean(request, "statusChange"); 33 ////步骤1：验证码校验 34 if(!statusChange&&!CodeUtil.checkVerifyCode(request)) { 35 modelMap.put("success", false); 36 modelMap.put("errMsg", "输入了错误的验证码"); 37 return modelMap; 38 } 39 //接受前端参数的初始化，包括商品，缩略图，详情图列表实体类 40 ObjectMapper objectMapper = new ObjectMapper(); 41 Product product = null; 42 ImageHolder thumbnail = null; 43 List<ImageHolder> productImgList = new ArrayList<ImageHolder>(); 44 CommonsMultipartResolver commonsMultipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext()); 45 //步骤2：使用FastJson提供的api,实例化Product 构造调用service层的第一个参数 46 //接受前端参数变量的初始化，商品，缩略图，详情图列表实体类 47 String productStr = HttpServletRequestUtil.getString(request, "productStr"); 48 try { 49 product = objectMapper.readValue(productStr, Product.class); 50 } catch (Exception e) { 51 modelMap.put("success", false); 52 modelMap.put("errMsg", e.toString()); 53 return modelMap; 54 } 55 //若请求中存在文件流，则取出相关的文件（包括缩略图和详情图） 56 try { 57 if(commonsMultipartResolver.isMultipart(request)) { 58 MultipartHttpServletRequest multipartHttpServletRequest = (MultipartHttpServletRequest) request; 59 //取出缩略图并构建ImageHolder对象 60 CommonsMultipartFile thumbnailFile = (CommonsMultipartFile) multipartHttpServletRequest.getFile("thumbnail"); 61 if(thumbnailFile!=null) { 62 thumbnail = new ImageHolder(thumbnailFile.getOriginalFilename(), thumbnailFile.getInputStream()); 63 } 64 //取出详情图并构建List<ImageHolder>列表对象，最多支持六张图片上传 65 for(int i = 0;i<IMAGEMAXCOUNT;i++) { 66 CommonsMultipartFile productImgFile = (CommonsMultipartFile) multipartHttpServletRequest.getFile("productImg" + i); 67 if(productImgFile != null) { 68 //若取出的第i个详情图片文件流不为空，则将其加入详情图列表 69 ImageHolder productImg = new ImageHolder(productImgFile.getOriginalFilename(), productImgFile.getInputStream()); 70 productImgList.add(productImg); 71 }else { 72 //若取出的第i个详情图片文件流为空，则终止循环 73 break; 74 } 75 } 76 } 77 }catch (Exception e) { 78 modelMap.put("success", false); 79 modelMap.put("errMsg", e.toString()); 80 return modelMap; 81 } 82 // Step4 调用Service层 83 if(product != null && thumbnail != null && productImgList.size() > 0) { 84 try { 85 //从session中获取shop信息，不依赖前端的传递更安全 86 Shop currentShop = (Shop) request.getSession().getAttribute("currentShop"); 87 product.setShop(currentShop); 88 //调用modifyProduct 89 ProductExecution pe = productService.modifyProduct(product, thumbnail, productImgList); 90 if(pe.getState() == ProductStateEnum.SUCCESS.getState()) { 91 modelMap.put("success", true); 92 }else { 93 modelMap.put("success", false); 94 modelMap.put("errMsg", pe.getStateInfo()); 95 } 96 }catch (ProductOperationException e) { 97 modelMap.put("success", false); 98 modelMap.put("errMsg", e.toString()); 99 return modelMap; 100 } 101 }else { 102 modelMap.put("success", false); 103 modelMap.put("errMsg", "请输入商品信息"); 104 } 105 return modelMap; 106 }
