<s:textfield>使用request范围内的值作为默认值问题

struts2在Action使用模型驱动public class NewsAction extends BaseAction implements ModelDriven<News>获取News存入request范围内request..setAttribute("news", news);在页面中获取方式：<s:textfield name="biaoti" label="标题" value="%{#request.news.biaoti}"></s:textfield>