layui表單追加數據

            var form = new FormData(document.getElementById("form"));
            form.append('filez', 數據);
            $.ajax({
                url: '../../project/add',
                type: 'post',
                data: form,
                contentType: false,
                processData: false,
                success: function (res) {
                    if (res.code == 0) {
                        project = res.data;
            ...........

後臺

@LogAnnotation
    @RequestMapping(value = "/add", headers = "content-type=multipart/form-data")
    public BaseRes add(ProjectDTO projectDTO
            , @RequestParam(value = "file[]", required = false) MultipartFile[] files, @RequestParam(value = "filez", required = false) MultipartFile filez, HttpServletRequest request, String token) throws Exception {

        BaseRes res = redisService.getTokenExist(session, token);
        Integer code = res.getCode();
        if (code == 0) {
            User