打开目录：找到server.xml
添加host标签
<Host name="域名1" appBase="webapps" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false">
<Alias>域名2</Alias>
<Alias>域名3</Alias>
<Context path="" docBase="C:\\Program Files\\Apache Software Foundation\\Tomcat 7.0\\webapps" reloadable="true">
</Context></Host>