这个项目作业里面的批量新增怎么做啊，后台怎么接受这些数据啊

同学可以参考一下下边的代码。

public void add(HttpServletRequest request, HttpServletResponse response) throws Exception {
        DiskFileItemFactory diskFileItemFactory = new DiskFileItemFactory();
        FileUpload fileUpload = new FileUpload(diskFileItemFactory);
        List<FileItem> list = fileUpload.parseRequest(request);
        List<Book> books = new ArrayList<>();
        Book book = new Book();
        //遍历从前台获取的数据，依次把封装好的图书添加到集合中去
        for(FileItem fileItem : list){
                if(fileItem.isFormField()){
                    if(fileItem.getFieldName().equals("name")){
                        book.setName(fileItem.getString("UTF-8"));
                    }
                    if(fileItem.getFieldName().equals("categoryId")){
                        book.setCategoryId(Integer.parseInt(fileItem.getString()));
                    }
                    if(fileItem.getFieldName().equals("level")){
                        book.setLevel(Integer.parseInt(fileItem.getString()));
                    }
                    if(fileItem.getFieldName().equals("price")){
                        book.setPrice(Integer.parseInt(fileItem.getString()));
                    }
                }
                else {
                    String path = request.getServletContext().getRealPath("/img");
                    String filename = System.currentTimeMillis()+fileItem.getName().substring(fileItem.getName().lastIndexOf("."));
                    fileItem.write(new File(path+"/"+filename));
                    book.setImgPath(filename);
                    book.setCreateTime(new Date());
                    book.setUpdateTime(new Date());
                    books.add(book);
                    book = new Book();
                }
        }
        for(Book b : books){
            //如果你的插入方法是插入一本书，则循环调用，如果是插入一个数组，则直接把集合传给插入的方法
            bookService.insertBook(b);
        }
        response.sendRedirect("转发到你图书展示页");
    }