jstl 下拉列表

edit 

<select name="roleid" >

<c:forEach items="${list}" var="t">

<option value='<c:out value="${t.roleid}"/>' <c:if test="${user.roleid == t.roleid}">selected</c:if>>

  <c:out value="${t.rolename}"/>

</option>

</c:forEach>

</select>

 

query

<s:select list="#request.map" name="user.roleid" value="#request.roleid" listKey="key" listValue="value"  headerKey="2" headerValue="请选择"></s:select>