tomcat 实现多域名指定同一项目，且ip也可以访问

<!-- name 为localhost,所以ip也可以 -->
       <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">
       <Context path="/" docBase="one" />
        <Context path="/two" docBase="two" />
        <!-- 多域名访问同一个应用 -->
        <Alias>test.ynntwl.com</Alias>  
         <Alias>pdf.ynntwl.com</Alias>
        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhost_access_log" suffix=".txt"
               pattern="%h %l %u %t "%r" %s %b" />
      </Host> 
     <Host name="demo.ynntwl.com"  appBase="webapps2"
          unpackWARs="true" autoDeploy="true">
        <Context path="/" docBase="two" />
      <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
             prefix="localhost_access_log" suffix=".txt"
             pattern="%h %l %u %t "%r" %s %b" />
    </Host>