tomcat之静态资源访问

http://tomcat.apache.org/tomcat-8.0-doc/changelog.html
https://tomcat.apache.org/tomcat-8.0-doc/ssi-howto.html
http://tomcat.apache.org/tomcat-8.0-doc/config/resources.html
https://www.mail-archive.com/users%40tomcat.apache.org/msg99420.html// Tomcat8以下的Alias配置

https://www.mail-archive.com/search?l=users%40tomcat.apache.org&q=PostResources
http://mail-archives.apache.org/mod_mbox/tomcat-users/201402.mbox/%3C066F723E14695044B4BA02C550246BE6044434A8@NLBAWEXMBX3.infor.com%3E

由此总结出一条心得,查问题的路径:Tomcat官方->找到相关标签->批量搜索Google->取得结果最为高效

例子(Tomcat7或7以下):

<Context useHttpOnly="true" privileged="true" allowLinking="true" aliases="/static=z:/static,/news=z:/news">
...
Context>

jsp中调用时这样写

例子(Tomcat8):

<Context path="" docBase="D:\workspacejava\guess\guessweb\src\main\webapp" reloadable="false" allowLinking="true" privileged="true">
 <Resources>
	<PostResources base="z:/news" className="org.apache.catalina.webresources.DirResourceSet" webAppMount="/news"/>
	<PostResources base="z:/static" className="org.apache.catalina.webresources.DirResourceSet" webAppMount="/static"/>
 Resources>
Context>

z为:映射的驱动器名称(可在打开计算机里面看到映射网络驱动器)
base为:待替换目录
webAppMount为:挂载目录,即:Tomcat遇到以/news开头的替换为base指定的值,其中base指定为z:/news/也可行

需要在web.xml里面开启SSI,配置为filter模式也可以,两者选其一即可
也可以直接释放掉Tomcat安装目录下的config下的web.xml配置中的SSI,这个释放和配置在当前项目的web.xml中功能效果是一样的,区别在于一个是全局,一个仅仅针对当前项目
配置如下:

<servlet>
  <servlet-name>ssiservlet-name>
  <servlet-class>
    org.apache.catalina.ssi.SSIServlet
  servlet-class>
  <init-param>
    <param-name>bufferedparam-name>
    <param-value>1param-value>
  init-param>
  <init-param>
    <param-name>debugparam-name>
    <param-value>0param-value>
  init-param>
  <init-param>
    <param-name>expiresparam-name>
    <param-value>666param-value>
  init-param>
  <init-param>
    <param-name>isVirtualWebappRelativeparam-name>
    <param-value>falseparam-value>
  init-param>
  <init-param>
    <param-name>inputEncodingparam-name>
    <param-value>UTF-8param-value>
  init-param>
  <init-param>
    <param-name>outputEncodingparam-name>
    <param-value>UTF-8param-value>
  init-param>
  <load-on-startup>4load-on-startup>
servlet>
<servlet-mapping>
 <servlet-name>ssiservlet-name>
 <url-pattern>*.shtmlurl-pattern>
servlet-mapping>