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

1. <?xmlversion=“1.0”encoding=“UTF-8”?>
2. <!DOCTYPEserver-xml[
3. <!ENTITY-vhostSYSTEM“file:///usr/local/tomcat/conf/vhost/.xml”>
4. <!ENTITYjava.-vhostSYSTEM“file:///usr/local/tomcat/conf/vhost/java..xml”>
5. <!ENTITYdemo.-vhostSYSTEM“file:///usr/local/tomcat/conf/vhost/demo..xml”>
6. ]>
7. <Serverport=“8006”shutdown=“SHUTDOWN”>
8. <ListenerclassName=“org.apache.catalina.core.JreMemoryLeakPreventionListener”/>
9. <ListenerclassName=“org.apache.catalina.mbeans.GlobalResourcesLifecycleListener”/>
10. <ListenerclassName=“org.apache.catalina.core.ThreadLocalLeakPreventionListener”/>
11. <ListenerclassName=“org.apache.catalina.core.AprLifecycleListener”/>
12. <!–
13. <ListenerclassName=”org.apache.catalina.mbeans.JmxRemoteLifecycleListener”rmiRegistryPortPlatform=”8081″rmiServerPortPlatform=”8082″/>
14. –>
15. <GlobalNamingResources>
16. <Resourcename=“UserDatabase”auth=“Container”
17. type=“org.apache.catalina.UserDatabase”
18. description=“Userdatabasethatcanbeupdatedandsaved”
19. factory=“org.apache.catalina.users.MemoryUserDatabaseFactory”
20. pathname=“conf/tomcat-users.xml”/>
21. </GlobalNamingResources>
23. <Servicename=“Catalina”>
24. <Connectorport=“8080”
25. protocol=“org.apache.coyote.http11.Http11AprProtocol”
26. connectionTimeout=“20000”
27. redirectPort=“8443”
28. maxThreads=“1000”
29. minSpareThreads=“20”
30. acceptCount=“1000”
31. debug=“0”
32. disableUploadTimeout=“true”
33. useBodyEncodingForURI=“true”
34. enableLookups=“false”
35. URIEncoding=“UTF-8”/>
36. <Enginename=“Catalina”defaultHost=“”>
37. <RealmclassName=“org.apache.catalina.realm.LockOutRealm”>
38. <RealmclassName=“org.apache.catalina.realm.UserDatabaseRealm”
39. resourceName=“UserDatabase”/>
40. </Realm>
41. &-vhost;
42. &java.-vhost;
43. &demo.-vhost;
44. </Engine>
45. </Service>
46. </Server>