struts的web.xml有关问题

struts的web.xml问题
我用myeclipse添加的，结果生成出来的web.xml为：
<?xml   version= "1.0 "   encoding= "UTF-8 "?>
<web-app   xmlns= "http://java.sun.com/xml/ns/j2ee "   xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance "   version= "2.4 "   xsi:schemaLocation= "http://java.sun.com/xml/ns/j2ee       http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd ">
    <servlet>
        <servlet-name> action </servlet-name>
        <servlet-class> org.apache.struts.action.ActionServlet </servlet-class>
        <init-param>
            <param-name> config </param-name>
            <param-value> /WEB-INF/struts-config.xml </param-value>
        </init-param>
        <init-param>
            <param-name> debug </param-name>
            <param-value> 3 </param-value>
        </init-param>
        <init-param>
            <param-name> detail </param-name>
            <param-value> 3 </param-value>
        </init-param>
        <load-on-startup> 0 </load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name> action </servlet-name>
        <url-pattern> *.do </url-pattern>
    </servlet-mapping>
</web-app>


这个文件放到resin下面运行时，总是报unknown   element   `version '
in   web-app
错误。

把version去掉还是不行，谁碰到过这种问题啊


------解决方案--------------------
<web-app xmlns= "http://java.sun.com/xml/ns/j2ee " xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance " version= "2.4 " xsi:schemaLocation= "http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd ">
改成 <web-app>