struts2 标签可以实现的简单动态下拉框

  <s:form method="post" action="user/user!save.action">
   <s:textfield name="userName"></s:textfield> 
      <s:textfield name="passWord"></s:textfield> 
       <select name = "deptid">
    <option value="0">请选择</option>
    <s:iterator value="depts" id="de">
     <option value="<s:property  value='#de.id'/>">
     <s:property value="#de.deptName"/>
     </option>
    </s:iterator>
   </select> 
   <s:submit value="注册"></s:submit>
  </s:form>

方法2

<s:select list="%{#request.ctypes}" listKey="ctype_code" listValue="type_name" headerKey="" headerValue="请选择" name="queryApply.ctype_code" cssClass="sel_style_w_180"/>