<s:iterator id="at" value="#request.attachmentList"
status="item">
<a href=" <s:url action='download.action'>
<s:param name='fileName' value='#at.realName'></s:param>
<s:param name='storeName' value='#at.storeName'></s:param>
</s:url>">${realName
}</a> <br />
</s:iterator>
解释:通过param传参可解决后台参数乱码问题
或者写过滤器对get()取参进行参数中文处理