jeecg t:upload 使用后台取参数问题

<pre name="code" class="java">String deptName = <span style="color:#FF0000;"><strong>request.getParameter("dept_id")</strong></span>;

//后台取formdata值

<t:formvalid formid="formgobj" layout="div" dialog="true"><fieldset class="step"><input type="hidden"
id="dept_id" name="deptName" value="${deptName}"><div class="form"><t:upload name="fiels" buttonText="选择要导入的文件" uploader="msgGroupController.do?importExcel" extend="*.xls;*.xlsx" id="g_upload"
formData="dept_id"></t:upload></div><div class="form" id="filediv" style="height: 50px"></div></fieldset></t:formvalid>