在Spring-mvc拦截器中，我想访问处理程序控制器方法

public class CustomInterceptor implements HandlerInterceptor  {
    public boolean preHandle(
        HttpServletRequest request,HttpServletResponse response, 
            Object handler) {

        log.info(handler.getClass().getName()); //access to the controller class
        //I want to have the controller method
        ...
        return true;
   }
   ...
}