Error filterStart

严重: Error filterStart
2009-12-4 14:26:23 org.apache.catalina.core.StandardContext start
严重: Context [/ncrazy] startup failed due to previous errors
2009-12-4 14:39:41 org.apache.jk.common.ChannelSocket processConnection
警告: processCallbacks status 2
2009-12-4 14:45:09 org.apache.jk.common.ChannelSocket processConnection
警告: processCallbacks status 2
2009-12-4 14:45:09 org.apache.jk.common.ChannelSocket processConnection
警告: processCallbacks status 2
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
xmlns="http://java.sun.com/xml/ns/javaee" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <filter>
   <filter-name>strtest</filter-name>
   <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
  </filter>
  <filter-mapping>
   <filter-name>strtest</filter-name>
   <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>把FILTER去掉就正常，添加就错误。
在自己机子上运行是正常的，上传到服务器就失败了。