哪位大佬能帮我看看这是什么情况，tomcat服务能正常访问，但日志一直刷新这个东西

09-Oct-2019 09:27:00.386 FINE [http-nio-8080-exec-67] org.apache.catalina.authenticator.AuthenticatorBase.invoke Not subject to any constraint

09-Oct-2019 09:27:00.472 FINE [http-nio-8080-exec-86] org.apache.catalina.authenticator.AuthenticatorBase.invoke Security checking request HEAD /

09-Oct-2019 09:27:00.473 FINE [http-nio-8080-exec-86] org.apache.catalina.authenticator.AuthenticatorBase.invoke Not subject to any constraint

09-Oct-2019 09:27:00.490 FINE [http-nio-8080-exec-2] org.apache.catalina.authenticator.AuthenticatorBase.invoke Security checking request HEAD /

09-Oct-2019 09:27:00.491 FINE [http-nio-8080-exec-2] org.apache.catalina.authenticator.AuthenticatorBase.invoke Not subject to any constraint

09-Oct-2019 09:27:00.496 FINE [http-nio-8080-exec-82] org.apache.catalina.authenticator.AuthenticatorBase.invoke Security checking request HEAD /

09-Oct-2019 09:27:00.496 FINE [http-nio-8080-exec-82] org.apache.catalina.authenticator.AuthenticatorBase.invoke Not subject to any constraint

09-Oct-2019 09:27:00.501 FINE [http-nio-8080-exec-15] org.apache.catalina.authenticator.AuthenticatorBase.invoke Security checking request HEAD /

09-Oct-2019 09:27:00.501 FINE [http-nio-8080-exec-15] org.apache.catalina.authenticator.AuthenticatorBase.invoke Not subject to any constraint

09-Oct-2019 09:27:00.519 FINE [http-nio-8080-exec-33] org.apache.catalina.authenticator.AuthenticatorBase.invoke Security checking request HEAD /

09-Oct-2019 09:27:00.519 FINE [http-nio-8080-exec-33] org.apache.catalina.authenticator.AuthenticatorBase.invoke Not subject to any constraint

09-Oct-2019 09:27:00.525 FINE [http-nio-8080-exec-81] org.apache.catalina.authenticator.AuthenticatorBase.invoke Security checking request HEAD /

09-Oct-2019 09:27:00.525 FINE [http-nio-8080-exec-81] org.apache.catalina.authenticator.AuthenticatorBase.invoke Not subject to any constraint

09-Oct-2019 09:27:00.556 FINE [http-nio-8080-exec-75] org.apache.catalina.authenticator.AuthenticatorBase.invoke Security checking request HEAD /

09-Oct-2019 09:27:00.556 FINE [http-nio-8080-exec-75] org.apache.catalina.authenticator.AuthenticatorBase.invoke Not subject to any constraint

09-Oct-2019 09:27:00.567 FINE [http-nio-8080-exec-23] org.apache.catalina.authenticator.AuthenticatorBase.invoke Security checking request HEAD /

09-Oct-2019 09:27:00.567 FINE [http-nio-8080-exec-23] org.apache.catalina.authenticator.AuthenticatorBase.invoke Not subject to any constraint

09-Oct-2019 09:27:00.573 FINE [http-nio-8080-exec-55] org.apache.catalina.authenticator.AuthenticatorBase.invoke Security checking request HEAD /

web.xml配置下

<security-constraint>
    <web-resource-collection>
        <web-resource-name>myServletWAR</web-resource-name>
        <url-pattern>*.jsp</url-pattern>
    </web-resource-collection>
    <auth-constraint>
        <role-name>my_role</role-name>
    </auth-constraint>
</security-constraint>