图片和表单数据同时上传

//请求 
export function addcountorderitem(data) {
    return request({
        url: '/countoder/oderitem/add',
        method: 'post',
        data: data,
        headers: { 'Content-Type': 'multipart/form-data' }//有文件上传时 必须加此参数

    })
}

  //把数据封装成 formdata

const formdata = new FormData(form);
      formdata.append("countItemId", this.editdata.countItemId);
//把文件对象装入formdata

formdata.append("files", this.updloadimage[index].file);

    formdata.append("files", this.updloadimage[index].file);

 addcountorderitem(formdata).then((res) => { if (res.code == "200") { showToast("添加成功！"); this.onRefresh(); } });

     服务端接口
   @PostMapping("/add")
    public AjaxResult add( WmsCountItem wmsCountItem,@RequestParam(value = "files")  MultipartFile[] files)
    {
        return toAjax(wmsCountItemService.insertWmsCountItem(wmsCountItem,files));
    }