<!-- 页面的select -->
<select name="streetId">
<c:forEach items="${requestScope.street}" var="street"> <option value="${street.id }">${street.name }</option>
</c:forEach>
</select>
//获取select的value
ActionContext ac = ActionContext.getContext();
Map<String, Object> request = (Map<String, Object>)ac.get("request");
String streetId = request.get("streetId");
结果是null,为什么为什么?EL绝对没问题