Tomcat: NIO没有配置,是否使用?

Tomcat: is NIO used although not being configured?

根据以下文章:http://java.dzone.com/articles/understanding-tomcat-nio,了解 Tomcat 实例是否使用 NIO(而不是 BIO)的方法是寻找:

INFO: Initializing ProtocolHandler ["http-nio-8080"]

在我的 Tomcat 服务器上我有:

grep "Initializing ProtocolHandler" /opt/tomcat/logs/*
/opt/tomcat/logs/catalina.2015-02-23.log:23-Feb-2015 15:20:00.627 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"]
/opt/tomcat/logs/catalina.2015-02-23.log:23-Feb-2015 15:20:00.665 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-8009"]

但是我的 server.xml 不包含任何告诉它使用 NIO 的内容,我的连接器如下所示:

<Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />

换句话说,我没有像上面的文章那样将协议设置为使用 org.apache.coyote.http11.Http11NioProtocol。

服务器怎么好像还在用NIO?

-- 附加信息

提前致谢

However my server.xml does contain anything that tells it to use NIO,

NIO 是 Tomcat 8.

的默认 HTTP 和 AJP 连接器实现

The default HTTP and AJP connector implementation has switched from the Java blocking IO implementation (BIO) to the Java non-blocking IO implementation (NIO). BIO may still be used but Servlet 3.1 and WebSocket 1.0 features that use non-blocking IO will then use blocking IO instead which may cause unexpected application behavior.

http://tomcat.apache.org/migration-8.html#Default_connector_implementation