Calculation/app/view/shares/import_file_modal.ejs

<div class="modal fade" id="base-import-file" data-backdrop="static" enctype="multipart/form-data">
    <div class="modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">导入</h5>
            </div>
            <div class="modal-body">
                <div class="form-group">
                    <label >选择文件</label>
                    <input type="file" class="form-control-file" id="bsf-file" accept="*.cpd">
                </div>
            </div>
            <div class="modal-footer d-flex justify-content-between">
                <div class="ml-auto">
                    <button type="button" class="btn btn-secondary btn-sm" data-dismiss="modal">关闭</button>
                    <button type="button" class="btn btn-primary btn-sm" id="bsf-ok">确认</button>
                </div>
            </div>
        </div>
    </div>
</div>
<script>
    const BaseImportFile = (function () {
        let importSetting;
        // 清除上一次数据
        $('#base-import-file').bind('hidden.bs.modal', function () {
            $('#bsf-file').val('');
        });

        // 上传excel内容，并导入
        $('#bsf-ok').click(function () {
            const files = $('#bsf-file')[0].files;
            const formData = new FormData();

            for (const file of files) {
                if (file === undefined) {
                    toast('未选择上传文件！', 'error');
                    return false;
                }
                const filesize = file.size;
                if (filesize > 30 * 1024 * 1024) {
                    toast('存在上传文件大小过大！', 'error');
                    return false;
                }
                const fileext = '.' + file.name.toLowerCase().split('.').splice(-1)[0];
                if (importSetting.validList.indexOf(fileext) === -1) {
                    toast('只能上传指定格式的附件！', 'error');
                    return false;
                }
                formData.append('size', filesize);
                formData.append('file[]', file);
            }

            postDataWithFile(importSetting.url, formData, function (data) {
                if (importSetting.afterImport) importSetting.afterImport(data);
                $('#base-import-file').modal('hide');
            });
        });

        const show = function (setting) {
            importSetting = setting;
            $('#base-import-file').modal('show');
        }
        return { show };
    })();
</script>