你好前辈，我在你的springboot框架上，增加了一个过滤器
AppTokenCheckFilter

这个类的详情如下：

/** 过滤器 */
public class AppTokenCheckFilter extends OncePerRequestFilter {

@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {

   System.out.println("AppTokenCheckFilter++++++:  "+request.getPathInfo());

   try {
       if(!WebConstant.PASS_REQUEST.contains(request.getPathInfo())) {
           String token = request.getHeader("Authorization");

           //检查jwt令牌, 如果令牌不合法或者过期, 里面会直接抛出异常, 下面的catch部分会直接返回
           Map<String,Object> result = JwtUtil.validateToken(token);
           request.setAttribute("uId",result.get("uId"));
           request.setAttribute("phone",result.get("phone"));
       }
   } catch (Exception e) {
       PathCheckMsgUtil.writeMsgToPage(request, response, ResponseVoResultCode.CODE_AUTHORITY, "您的身份验证已过期, 请重新登录", "app no token");
       return;
   }
   //如果jwt令牌通过了检测, 那么就把request传递给后面的RESTful api
   filterChain.doFilter(request, response);

}
}

当有请求进来后，通过request.getPathInfo()获取 路径，一直是null,不明白哪有问题，希望前辈能指点一下?