<VirtualHost *:80>
  ServerAdmin hilton@hedong.com <----管理员
  DocumentRoot /usr/local/apache/htdocs
  ServerName test.hedong.com <----虚拟主机域名
  ErrorLog logs/cp-error_log
  CustomLog logs/cp-access_log common
----下面代理后台的tomcat,test是一个应用程序。
test应用设计时没考虑缓存问题，结果不进行修改不能进行缓存。:(此处只缓存了图片目录---
  ProxyPass /test/Images/ http://localhost:8080/test/Images/
  ProxyPassReverse /test/Images/ http://localhost:8080/test/Images/
  CacheEnable mem /test/Images/ <----用使用内存进行cache
  CacheIgnoreNoLastMod On
  CacheIgnoreCacheControl On
  CacheDefaultExpire 60000
  CacheMaxExpire 86400
  CacheLastModifiedFactor 1
  MCacheMaxStreamingBuffer 100000
  MCacheSize 819200
  MCacheMaxObjectCount 1400
  MCacheMinObjectSize 100
  MCacheMaxObjectSize 60000
----下面是利用重写，使得用户不必须了解tomcat的情况
  RewriteEngine on
  RewriteMap id2jsp txt:/tomcatpath/webapps/test/WEB-INF/conf/maps/id2jsp.txt
  RewriteMap id2db txt:/tomcatpath/webapps/test/WEB-INF/conf/maps/id2db.txt
  RewriteRule ^/test/([0-9]*)/([0-9]*),([0-9]*)\.html ${id2jsp:$1}\?dbname=${id2db:$2}&r=$3 [PT]
  RewriteRule ^/test/([^/]*)/([^/]*)\.html /test/$1/$2\.jsp [PT]
  RewriteRule ^/test/([^/]*)\.html /test/$1\.jsp [PT]

  RewriteRule ^/$ /test/index.jsp [R]
  JkMount /test ajp13
  JkMount /test/* ajp13
  JkMount /*.jsp ajp13
</VirtualHost>