struts2 how custom interceptor

Write a struts2 + spring project you want to customize an interceptor verify the account login

<?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>

will be reported 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 *) ".
error how to solve ah ? Much they seek to rescue
------ Solution ------------------------------------ --------
put in the wrong order ah.
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 *) "
error message obviously friends.
------ For reference only -------------------------------------- -

dare to ask how to change it ?
------ For reference only -------------------------------------- -
result-types?,
interceptors?,
default-interceptor-ref?,
default-action-ref?,
default-class-ref?,
global-results?,
global-exception-mappings?,
action *

will be arranged in this order does not ?
------ For reference only -------------------------------------- -

Well get out Thank you, illustrated