server.xml引入子文件配置（tomcat虚拟主机）

在配置tomcat虚拟主机时候，如何每一个虚拟主机写成单独文件，server.xml包含这些子文件？ 如以下《OneinStack》中，添加JAVA环境虚拟主机后tomcat配置文件详情：

/usr/local/tomcat/conf/server.xml

?xml version="1.0" encoding="UTF-8"? !DOCTYPE server-xml [ !ENTITY localhost-vhost SYSTEM "file:///usr/local/tomcat/conf/vhost/localhost.xml" !ENTITY java.linuxeye.com-vhost SYSTEM "file:///usr/local/tomcat/conf/vhost/java.linuxeye.com.xml" !ENTITY demo.linuxeye.com-vhost SYSTEM "file:///usr/local/tomcat/conf/vhost/demo.linuxeye.com.xml" ] Server port="8006" shutdown="SHUTDOWN"   Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener"/   Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/   Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener"/   Listener className="org.apache.catalina.core.AprLifecycleListener"/ !--   Listener className="org.apache.catalina.mbeans.JmxRemoteLifecycleListener" rmiRegistryPortPlatform="8081" rmiServerPortPlatform="8082" / --   GlobalNamingResources     Resource name="UserDatabase" auth="Container"               type="org.apache.catalina.UserDatabase"               description="User database that can be updated and saved"               factory="org.apache.catalina.users.MemoryUserDatabaseFactory"               pathname="conf/tomcat-users.xml" /   /GlobalNamingResources   Service name="Catalina"     Connector port="8080"               protocol="org.apache.coyote.http11.Http11AprProtocol"               connectionTimeout="20000"               redirectPort="8443"               maxThreads="1000"               minSpareThreads="20"               acceptCount="1000"               debug="0"               disableUploadTimeout="true"               useBodyEncodingForURI="true"               enableLookups="false"               URIEncoding="UTF-8" /     Engine name="Catalina" defaultHost="localhost"       Realm className="org.apache.catalina.realm.LockOutRealm"         Realm className="org.apache.catalina.realm.UserDatabaseRealm"                resourceName="UserDatabase"/       /Realm       localhost-vhost;       java.linuxeye.com-vhost;       demo.linuxeye.com-vhost;     /Engine   /Service /Server

注：在server元素前添加如下格式：

!DOCTYPE server-xml [   !ENTITY localhost-vhost SYSTEM "file:///usr/local/tomcat/conf/vhost/localhost.xml" ]

并在Engine.../Engine]引用它（localhost-vhost，注：不能以数字开头）即可。

下面是每个单独虚拟主机文件：/usr/local/tomcat/conf/vhost/localhost.xml

Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true"   Context path="" docBase="/data/wwwroot/default" debug="0" reloadable="true" crossContext="true"/   Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"          prefix="localhost_access_log." suffix=".txt" pattern="%h %l %u %t quot;%rquot; %s %b" /