struts2过滤器 没有用

Question

LoginFilter类：
public void destroy() {

}

public void doFilter(ServletRequest sRequest, ServletResponse sResponse,        
        FilterChain filterChain) throws IOException, ServletException{  

    HttpServletRequest request = (HttpServletRequest) sRequest;        
    HttpServletResponse response = (HttpServletResponse) sResponse;        
    HttpSession session = request.getSession();        
    String url=request.getServletPath();    
    String contextPath=request.getContextPath();    
    if(url.equals("")) url+="/";    
    if((url.startsWith("/")&&!url.startsWith("/login"))){//若访问后台资源 过滤到login    
         String user=(String)session.getAttribute("username");    
         if(user==null){//转入管理员登陆页面    
              response.sendRedirect(contextPath+"/login.jsp");   
              return;    
         }    
    }    
      filterChain.doFilter(sRequest, sResponse);      
}    

public void init(FilterConfig arg0) throws ServletException {  

}  

web.xml:

loginFilter
com.gx.utils.LoginFilter

targetFilterLifecycle
true

loginFilter
/*

还没有登录判断就跳转到LoginFilter类里面了，

Answer 1

不是很明白你的意思，过滤器本来就是第一个 被执行的， 在登录验证之前。