Tomcat 各种Connector(NIO)配置

Tomcat从5.5版本开始，支持以下四种Connector的配置分别为：

<Connector port="8081" protocol="org.apache.coyote.http11.Http11NioProtocol" connectionTimeout="20000" redirectPort="8443"/>
<Connector port="8081" protocol="HTTP/1.1" connectionTimeout="20000"
              redirectPort="8443"/>
<Connector executor="tomcatThreadPool"
              port="8081" protocol="HTTP/1.1"
              connectionTimeout="20000"
              redirectPort="8443" />
<Connector executor="tomcatThreadPool"
              port="8081" protocol="org.apache.coyote.http11.Http11NioProtocol"
              connectionTimeout="20000"
              redirectPort="8443" />