点击下一页等按钮问题？

<a href="/department_findAll.action?currPage = <s:property value="currPage+1"/>">下一页</a>   

"/department_findAll.action?currPage = <s:property value="currPage+1"/>" cannot resolve servlet '/department_findAll.action?currPage = <s:property value="currPage+1"/>'

点击下一页按钮是 页面闪了一下 但是没反应，地址还是不变.

加了${ pageContext.request.contextPath } 也没用