html - 如何在scriptlet中获取html：select值

Question

如何访问 html 的值：选择在 scriptlet 中动态生成的标记值

<html:select property="serviceCategory" styleId="serviceCategory"  styleClass="textbox" tabindex="1" onchange="setGlobalVar(),generateCertificateList(this.value)">

<% java code to fetch list %>

<option value="<%=serviceCategoryVO.getServiceCategoryId()%>"><%=serviceCategoryVO.getServiceCategoryName()%></option>
</html:select>
.
.
.
<%
  String serviceCategory=request.getParameter("serviceCategory"); --This is not working
%>

标签： htmljspscriptlet