EL configuration variables

This article requires cleanup and may refer to a legacy version of Resin. Please visit http://www.caucho.com/documentation/ for the most up-to-date documentation.

Resin configuration can use JSP EL variables in the resin.xml and resin-web.xml.

EL Variables

getenv

System environment variables

host

Information from the virtual host

java

Contains JVM variables

resin

Contains top-level Resin configuration like ${resin.home}

system

Values from the Java System.getProperties

webApp

Information about the web-app

${__DIR__}

The directory of the current configuration file.

${__FILE__}

The current configuration file.

getenv

The ${getenv} variable returns system environment variables.

 <mypkg:MyBean xmlns:mypkg="urn:java:com.mycom.mypkg">
   <myValue>${getenv["MY_VAR"]}</myValue>
 </mypkg:MyBean>

host

The ${host} variable returns virtual host values

${host.name}

The name used for deployment in a hosts/ directory

${host.hostName}

The canonical DNS host name

${host.url}

The URL for the canonical host name

${host.regexp[0]}

For host-regexp matching, the n-th regexp expression

${host.root}

The virtual host's rootDirectory

${host.warDirectory}

The webapps/ directory in the virtual host

java

${java.home}

The Path to the JDK's home directory

${java.properties['user.name']}

Any System.getProperty("foo") value

${java.userName}

The value of System.getProperty("user.name")

${java.version}

The value of System.getProperty("java.version")

resin

${resin.address}

The address of the <server> configuration

${resin.conf}

The path to the Resin configuration file

${resin.home}

The Resin installation directory

${resin.port}

The port of the <server> configuration

${resin.root}

The Resin content root directory

${resin.serverId}

The unique server identifier specified by -server id

${resin.version}

The Resin version

${resin.versionDate}

The Resin build date

system

The Java System.getProperties values, which are set by the -Dfoo=xxx JVM arguments or set by the JVM itself.

 <mypkg:MyBean xmlns:mypkg="urn:java:com.mycom.mypkg">
   <myValue>${system["user.name"]}</myValue>
 </mypkg:MyBean>

webApp

Variables for a deployed web-app

${webApp.id}

The unique deployment identifier, like production/webapps/default/ROOT

${webApp.name}

The name used for the war file like ROOT

${webApp.root}

The root directory for the expanded war

${webApp.contextPath}

The web-app's context path as returned by ServletRequest

${webApp.regexp[0]}

Values for webapp-regexp matches

${webApp.version}

The webapp version, if any