在struts2中的filter在weblogic中无效-服务报错

"

应用上有个漏洞，漏洞如下

在web.xml中添加过滤器

<!-- 	修复Struts OGNL控制面板泄露漏洞，添加访问过滤，过滤掉问题链接 -->
	<filter>  
        <filter-name>ognlFilter</filter-name>  
        <filter-class>OgnlFilter</filter-class>  
     </filter>  
     <filter-mapping>  
        <filter-name>ognlFilter</filter-name>  
       <url-pattern>*/struts/webconsole.html</url-pattern> 
     </filter-mapping>

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author weber
 *    Struts OGNL控制面板泄露漏洞链接过滤
 *      
 */
public class OgnlFilter implements Filter{

	@Override
	public void destroy() {
		
		
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain arg2) throws IOException, ServletException {
		 HttpServletRequest req = (HttpServletRequest) request;  
	     HttpServletResponse resp = (HttpServletResponse) response;  
	     //跳转到错误界面
	     resp.sendRedirect("/404.jsp");
		
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		
		
	}

}