struts2怎么自定义拦截器
写一个struts2+spring的项目 想要自定义一个拦截器验证是否登录了账号

<?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>
    <package name="pwb-default" extends="struts-default">
    <interceptors>
    <interceptor name="login" class="interceptor.LoginInterceptor"/>
    <interceptor-stack name="loginStack">
    <interceptor-ref name="login"></interceptor-ref>
    <interceptor-ref name="defaultStack"></interceptor-ref>
    </interceptor-stack>
    </interceptors>
    <global-results>
    <result name="login">/main/login.html</result>
    </global-results>
    <default-interceptor-ref name="loginStack"/>
    </package>
</struts>

会报The content of element type "package" must match "(result-types?,interceptors?,default-interceptor-ref?,default-action-
ref?,default-class-ref?,global-results?,global-exception-mappings?,action*)".
的错误 该怎么解决啊？求大大们解救 struts2 interceptor java spring
[解决办法]
放的顺序不对啊。
he content of element type "package" must match "(result-types?,interceptors?,default-interceptor-ref?,default-action-
ref?,default-class-ref?,global-results?,global-exception-mappings?,action*)"
错误信息很明显啦。