easyUI利用ajax上传文件后台

@RequestMapping("/excelUploadItemList")
    @ResponseBody
    public CommonResponse excelUploadItemList(@RequestParam MultipartFile upFile, HttpServletRequest request, HttpServletResponse response) {
        String result = null;
        try {
            if (request instanceof MultipartHttpServletRequest) {
                String filename = upFile.getOriginalFilename();
                String tempPath;
                logger.info("生成路径");
                //String fsRoot = ConfigPool.getConfigValue("storage.fs.root");
                String fsRoot = "C:\\TempFile";
                tempPath = fsRoot + File.separator + "temp" + File.separator + filename;

                File f = new File(fsRoot + File.separator + "temp");
                if (!f.exists()) {
                    f.mkdirs();
                }
                File newFile = new File(tempPath);
                upFile.transferTo(newFile);
                if (ExcelPublic.checkArray(tempPath)) { // 第一行有值
                    // 读取第一行的值
                    logger.info("开始读取文件！");
                    ArrayList<String> al = new ArrayList<String>();
                    // 读取第一行，标题字段行
                    al = ExcelPublic.readExcelFirstline(tempPath);
                    // [商品ID, 商品标题, 商品卖点, 商品价格]
                    System.out.println("al:" + al);
                    // 读取excel中所有内容
                   String[][] content = ExcelPublic.dyadicArray(tempPath, 1, 0);
                    // [[商品ID,商品标题,商品卖点,商品价格],[123456,K20Pro,大内存,2799],[234567,iPhoneSE,新机,3299]]
                    System.out.println("content:" + content);
                    logger.info("读取文件后获取列");
                    Map<String, Integer> locationMap = new HashMap<String, Integer>(); // 存放需要插入的数据的位置
                    String[] finalFieldArr = { "商品ID", "商品标题", "商品卖点", "商品价格"};
                    // 读取标题字段及其所在列位置
                    locationMap = readLocation(tempPath, finalFieldArr);
                    // {商品标题=1, 商品卖点=2, 商品ID=0, 商品价格=3}
                    System.out.println("locationMap:" + locationMap);
                    if (locationMap.containsValue(-1)) {
                        result = "表头不正确，正确表头为：" + Arrays.asList(finalFieldArr);
                        throw new Exception(result);
                    }
                    logger.info("导入实际文件中");
                    result = this.itemService.excelUploadItemList(al, content, locationMap);
                }
            }
        } catch (Exception e) {
            // 失败
            result = e.toString();
            e.printStackTrace();
            CommonResponse commonresponse = new CommonResponse();
            commonresponse.setSuccFlag(false);
            commonresponse.setMsg(result);
            return commonresponse;
        }
        // 成功
        CommonResponse commonresponse = new CommonResponse();
        commonresponse.setSuccFlag(true);
        response.setContentType("text/plain; charset=UTF-8");
        return commonresponse;
    }

@Override
    public String excelUploadItemList(ArrayList<String> al, String[][] content, Map<String, Integer> locationMap) {
        Map<String, String[]> itemMap = new HashMap<>();
        for (int i = 1; i < content.length; i++) {
            String itemId = content[i][locationMap.get("商品ID")];
            itemMap.put(itemId, content[i]);
        }
        // 生成时间
        String date = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date());
        // sql
        String sql = "insert into tb_item (id, title, sell_point, price, num , cid, status, created, updated) values(?, ?, ?, ?, 500, 560, 1, ‘"
                + date +"‘,‘" + date + "‘)";
        // 参数
        List<Object[]> batchArgs = new ArrayList<Object[]>();
        // 封装参数
        for (int i = 1; i < content.length; i++) {
            String[] rowData = content[i];
            Object[] batchArg = new Object[]{rowData[0], rowData[1], rowData[2], rowData[3]};
            batchArgs.add(batchArg);
        }
        String result = "";
        try {
            jdbcTemplate.batchUpdate(sql, batchArgs);
            result = "success";
        } catch (DataAccessException e) {
            e.printStackTrace();
        }

        return result;
    }