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public class ProductController {@Autowiredprivate ProductTypeService productTypeService;@Autowiredprivate ProductService productService;@ModelAttribute("productTypes")public List<ProductType> loadProductTypes() {List<ProductType> productTypes = productTypeService.findAllEnableProductTypes();return productTypes;}@RequestMapping("findAllProduct")public String findAllProduct(Integer pageNum , Model model) {if (ObjectUtils.isEmpty(pageNum)) {pageNum = PaginationConstant.PAGE_NUM;}PageHelper.startPage(pageNum,PaginationConstant.PAGE_SIZE);List<Product> productList = productService.findAllProducts();PageInfo<Product> pageInfo = new PageInfo<>(productList);model.addAttribute("pageInfo",pageInfo);return "productManager";}@RequestMapping("addProduct")public String addProduct(ProductVo productVo, Integer pageNum, HttpSession session, Model model){try {ProductDto productDto = new ProductDto();BeanUtils.copyProperties(productVo, productDto); productDto.setInputStream(productVo.getFile().getInputStream());productDto.setFileName(productVo.getFile().getOriginalFilename());int rows = productService.addProduct(productDto);if (rows >= 1) {model.addAttribute("successMsg", "添加成功");} else {model.addAttribute("failMsg", "添加失败");}} catch (Exception e) {e.printStackTrace();model.addAttribute("errorMsg", "文件上传失败");}return "forward:findAllProduct?pageNum="+pageNum;}@RequestMapping("checkProductName")@ResponseBodypublic Map<String , Object> checkProductName(String name , Model model) {Map<String,Object> map = new HashMap<>();if(productService.checkProductName(name)) {map.put("valid",true);}else{map.put("valid",false);map.put("message","商品("+name+")已存在");}return map;}@RequestMapping("findProductById")@ResponseBodypublic ResponseResult findProductById(int id) {Product product = productService.findProductById(id);if (product != null) {return ResponseResult.success(product);}else{return ResponseResult.fail("该商品信息不存在");}}@RequestMapping("getImage")public void getImage(String path, OutputStream outputStream){productService.getImage(path, outputStream);}@RequestMapping("modifyProduct")public String modifyProduct(ProductVo productVo, Integer pageNum, HttpSession session, Model model) {try {ProductDto productDto = new ProductDto();BeanUtils.copyProperties(productVo, productDto); productDto.setInputStream(productVo.getFile().getInputStream());productDto.setFileName(productVo.getFile().getOriginalFilename());int rows = productService.modifyProduct(productDto);if (rows >= 1) {model.addAttribute("successMsg", "修改成功");} else {model.addAttribute("failMsg", "修改失败");}} catch (Exception e) {model.addAttribute("errorMsg", "文件上传失败");}return "forward:findAllProduct?pageNum="+pageNum;}@RequestMapping("removeProductById")@ResponseBodypublic ResponseResult removeProductById(int id){int rows = productService.removeProductById(id);if (rows >= 1) {return ResponseResult.success("商品删除成功");}else {return ResponseResult.fail("商品删除失败");}}">