jsp页面不能用ognl表达式

页面不显示，控制台报错：严重: Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: /search/app/searchtools/cognation_query.jsp(34,7) According to TLD or attribute directive in tag file, attribute list does not accept any expressions

 <s:select id="assClassifyType" name="associatedClassifyNum.classifyNumType"
                                list="#{'ECLA':'ECLA','UC':'UC','FI':'FI','FT':'FT'}" listKey="key" listValue="value"></s:select>

上面这段代码没有问题，就是不能执行。是缺少什么架包吗？

http://blog.csdn.net/f9inux/article/details/1368428