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>