Struts2配置拦截器

<package name="loginaction" namespace="/" extends="struts-default">
        <interceptors>
            <interceptor name="myintercepter" class="interceper.LoginInterceper"></interceptor>
            <interceptor-stack name="mystack">
                <interceptor-ref name="defaultStack"></interceptor-ref>
                <interceptor-ref name="myintercepter"></interceptor-ref>
            </interceptor-stack>
        </interceptors>

        <action name="book" class="action.BookAction">
            <interceptor-ref name="mystack"></interceptor-ref>
            <result name="add">/index.jsp</result>
            <result name="delete">/index.jsp</result>
            <result name="update">/index.jsp</result>
            <result name="input">/login.jsp</result>
        </action>
    </package>