项目配置：框架Springboot 2.5、模板thymeleaf。

public class MyInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String userName = (String) request.getSession().getAttribute("userName");
        if(userName != null){
            return true;
        }
        response.sendRedirect("/login.html");
        return false;
    }
}

@Configuration
public class MyConfig implements WebMvcConfigurer {
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new MyInterceptor()).addPathPatterns("/**")
                .excludePathPatterns("/login.html", "/register.html",  "/static/**");
    }
}

但是访问 /login.html仍然被拦截器拦截，进入到prehandle方法。
求大神指教