struts1的多个filter的配备

struts1的多个filter的配置
Web.xml的配置，关于那个url-pattern我是费了点劲，得出的结论是url-pattern是IE地址栏里的URL，并不是相对WEN-INF的相对路径，如果要拦截WEB-INF下的JSP文件夹里的页面的话，<url-pattern>/jsp/*</url-pattern>,<url-pattern>/WEB-INF/jsp/*</url-pattern>
这两种配置都是不对的。原因是，它始终关注着浏览器地址栏里的地址。我就是这样的理解的。

	<filter>
		<filter-name>CharacterEncodingFilter</filter-name>
		<filter-class>filter.CharacterEncodingFilter</filter-class>
	</filter>

	<filter-mapping>
		<filter-name>CharacterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	
	<filter>
		<filter-name>IsLogin</filter-name>
		<filter-class>filter.LoginFilter</filter-class>
		<init-param>
			<param-name>loginPage</param-name>
			<param-value>/index.jsp</param-value>
		</init-param>
	</filter>
         
	<filter-mapping>
		<filter-name>IsLogin</filter-name>
                //拦截后缀名为showUserList.do的URL
		<url-pattern>/showUserList.do</url-pattern>
                //拦截后缀名为executeBussiessMethod.do的URL
		<url-pattern>/executeBussiessMethod.do</url-pattern>
	</filter-mapping>

Filter类代码：

public class LoginFilter implements Filter{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	
  private static Logger LOG = Logger.getLogger(LoginFilter.class);  
  
	private FilterConfig config;

	public void init(FilterConfig config) throws ServletException {
		this.config=config;
	}
	public void destroy() {
		this.config=null;
		
	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
System.out.println("===============Filter LoginFilter===============");

		HttpServletRequest requ=(HttpServletRequest)request;
		HttpServletResponse resp = (HttpServletResponse)response;  
		HttpSession session=requ.getSession();
		
		if(session.getAttribute("session_user")==null){
       //这里的 test是应用名字，这里并不像test是根目录一样。
			resp.sendRedirect("/test/index.jsp"); 
		}else{
			chain.doFilter(request, response);
		
		}
		
	}