<Host name="localhost" debug="0" appBase="D:\\Tomcat 5.0\\webapps"
       unpackWARs="true" autoDeploy="true"
       xmlValidation="false" xmlNamespaceAware="false">
       <Alias>localhost.com</Alias>
       <Logger className="org.apache.catalina.logger.FileLogger"
                 directory="logs"  prefix="localhost_log." suffix=".txt"
            timestamp="true"/>
        <Context path="" docBase="D:\\Tomcat 5.0\\webapps\\gg"  reloadable="true" caseSensitive="false" debug="0"></Context>
</Host>

<Host name="one.localhost" debug="0" appBase="D:\\Tomcat 5.0\\webapps"
       unpackWARs="true" autoDeploy="true"
       xmlValidation="false" xmlNamespaceAware="false">
       <Alias>one.localhost.com</Alias>
       <Logger className="org.apache.catalina.logger.FileLogger"
                 directory="logs"  prefix="localhost_log." suffix=".txt"
            timestamp="true"/>
       <Context path="" docBase="D:\\Tomcat 5.0\\webapps\\kk\\a"  reloadable="true" caseSensitive="false" debug="0"></Context>
</Host>

<Host name="two.localhost" debug="0" appBase="D:\\Tomcat 5.0\\webapps"
       unpackWARs="true" autoDeploy="true"
       xmlValidation="false" xmlNamespaceAware="false">
       <Alias>two.localhost.com</Alias>
       <Logger className="org.apache.catalina.logger.FileLogger"
                 directory="logs"  prefix="localhost_log." suffix=".txt"
            timestamp="true"/>
        <Context path="" docBase="D:\\Tomcat 5.0\\webapps\\kk\\b"  reloadable="true" caseSensitive="false" debug="0"></Context>
</Host>

因无域名解析服务器,所以在hosts上配,来模拟dns解析.

10.1.1.241  localhost           指向gg文件夹
10.1.1.241  localhost.com       指向gg文件夹
10.1.1.241  one.localhost       指向a文件夹
10.1.1.241  one.localhost.com   指向a文件夹
10.1.1.241  two.localhost       指向b文件夹
10.1.1.241  two.localhost.com   指向b文件夹

经过多方面尝试,终于在tomcat下配置成功了.