struts：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.

<struts>
    <package name="itcast" namespace="/test" extends="struts-default">
        <action name="helloworld" class="cn.itcast.action.HelloWorld" method="execute">
            <result name="success">/WEB-INF/page/hello.jsp</result>
        </action>
    </package>
</struts>

web：
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
    xmlns="http://java.
    xmlns:xsi="http://www.
    xsi:schemaLocation="http://java.
    http://java.

  <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
  
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>
小弟初学这个，还望兄弟了多多指教

去掉过滤器是什么意思？