java 用若依框架从app添加数据和图片

@PostMapping("/addfile")
@ResponseBody
public AjaxResult addSave(@RequestParam(value = "file") MultipartFile[] files, @RequestParam(value = "json") String  json)
{
    String code = "";
    String msg = "";
    String url = "";
    AnjianLvhua anjianLvhua = JSON.parseObject(json, AnjianLvhua.class);
    int a=anjianLvhuaService.insertAnjianLvhua(anjianLvhua);
    if(files.length>0) {
        try {
            for(MultipartFile file : files) {
                AnjianLvhuaFile weifaImgFile = new AnjianLvhuaFile();
                // 上传文件路径
                String filePath = RuoYiConfig.getUploadPath();
                // 上传并返回新文件名称
                String fileName = null;
                try {
                    fileName = FileUploadUtils.upload(filePath, file);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                url = serverConfig.getUrl() + fileName;
                //上传图片成功以后，开始保存图片地址到对应的项中
                weifaImgFile.setWeifaId(anjianLvhua.getLvhuaId());
                weifaImgFile.setFilePath(url);
                weifaImgFile.setFileName(fileName);
                weifaImgFile.setFileTime(new Date());
                int flag = anjianLvhuaFileService.insertAnjianLvhuaFile(weifaImgFile);
            }
           
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
        }

    }
    if(a>0){
        msg = "提交成功";

        code = AjaxResult.SUCCESS_STATUS;
    }else{
        msg = "提交失败";
        code = AjaxResult.ERROR_STATUS;
    }
    return new AjaxResult(code, msg, anjianLvhua);
}