创建index.html页面。
    将index.html资源部署到d盘的demo目录中。
    通过itbz.com:8888/itbz/index.html访问虚拟主机，并访问index.html。

    1. <Host name="itbz.com"  appBase="webapps2"
    2.             unpackWARs="true" autoDeploy="true">
    3.         <Context path="/itbz" docBase="D:\javaStudy\demo" />
    4.         <!-- SingleSignOn valve, share authentication between web applications
    5.              Documentation at: /docs/config/valve.html -->
    6.         <!--
    7.         <Valve className="org.apache.catalina.authenticator.SingleSignOn" />
    8.         -->
    10.         <!-- Access log processes all example.
    11.              Documentation at: /docs/config/valve.html
    12.              Note: The pattern used is equivalent to using pattern="common" -->
    13.         <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
    14.                prefix="localhost_access_log" suffix=".txt"
    15.                pattern="%h %l %u %t &quot;%r&quot; %s %b" />
    17.       </Host>