在struts前面加自定义的过滤器，先走自己的filter再走struts的，现在struts的filter貌似不走了？

请问我加了一个filter用来过滤*.action，原本还有struts的filter也是过滤*.action，我希望先走我写的filter再走struts的，然而现在struts的filter不起作用了，set方法都不走了，这是什么原因呢？现在进到action中后set过来的参数无法获取了。
web.xml中

<filter>

		<filter-name>uploadFilter</filter-name>

		<filter-class>com.taiji.jdxt.filter.UploadFilter</filter-class>

	</filter>

	<filter-mapping>

		<filter-name>uploadFilter</filter-name>

		<url-pattern>*.action</url-pattern>

	</filter-mapping>

	

	

	<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>*.action</url-pattern>

		<dispatcher>REQUEST</dispatcher>  

  		<dispatcher>FORWARD</dispatcher>  

	</filter-mapping>

这里是我自己加的filter

public class UploadFilter  extends HttpServlet implements Filter {

    /**

	 * 

	 */

	private static final long serialVersionUID = 1L;



	public void doFilter(ServletRequest request, ServletResponse response,

			FilterChain chain) throws IOException, ServletException {

	chain.doFilter(new StrutsRequestWrapper((HttpServletRequest) request), response);

    }



	@Override

	public void init(FilterConfig arg0) throws ServletException {

		// TODO Auto-generated method stub

		

	}



}