首先，配置struts.xml文件：

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"><struts><constant name="struts.objectFactory" value="sjsp</result>            </action>            <action name="clas" class="clasAction">            <result name="success" type="redirect">/clasquery.action</result>            </action>        </package></struts>