Referencing Environment Variables in web.xml

Posted by Udi Bar-On on Stack Overflow See other posts from Stack Overflow or by Udi Bar-On
Published on 2009-09-10T10:00:13Z Indexed on 2010/04/01 4:03 UTC
Read the original article Hit count: 354

Filed under:

web.xml

|

environment-variables

I'm pre-packaging a JSP web-app that relies on some file path settings found within web.xml. These settings are unknown at packaging time, because they reference a path the customer will set when deploying the entire application (of which the web-app is a management interface).

It seems that the easiest way to avoid tokens and file modifications in my installer script, is to ask the user for an install location, set this location as an environment variable (e.g JAVA_HOME), and have web.xml always reference that variable.

Is there a way to reference an environment variable value from within web.xml? Google searches lead to the J2EE method of SETTING environment variables from ejb xml files. This is not what I'm looking for.

Thanks Udi

© Stack Overflow or respective owner

Related posts about web.xml

JBOSS Security: web.xml vs. jboss-web.xml

as seen on Stack Overflow - Search for 'Stack Overflow'
What is the relation between web.xml and jboss-web.xml? Seems like: Jboss-web.xml specifies the security domain (which can be found in login-config.xml) web.xml specifies what the security level is I don't understand what happens when jboss-web.xml specifies a weak security domain… >>> More
Dependent on CVS tagging for automated builds

as seen on Programmers - Search for 'Programmers'
My current work relies on using tags in CVS for an automated build process (ANT currently) to build for respective environments (development, QA, production). From our research, neither Git or Subversion support tagging in the same manner. If we use Subversion or Git, they don't support tags (in… >>> More
Map external directory to web.xml

as seen on Stack Overflow - Search for 'Stack Overflow'
Is there an easy way to map a directory in the web.xml or other deployment descriptor (jetty.xml, etc) files? For example, if I have a directory /opt/files/ is there a way that I can access its files and sub-directories by visiting http://localhost/some-mapping/? It strikes me that there should be… >>> More
Changes to JBoss web.xml have no effect

as seen on Stack Overflow - Search for 'Stack Overflow'
I just added this to my web.xml on my JBOSS server. But it had no effect. I am still allowed to connect to ports that do not use bi-directional certificate exchange. Anyone have an ideas? <!-- Force SSL for entire site as described here: http://wiki.metawerx.net/wiki/ForcingSSLForSectionsOfYourWebsite… >>> More
Best practices for defining and initializing variables in web.xml and then accessing them from Java

as seen on Stack Overflow - Search for 'Stack Overflow'
I would like to define and initialize some variables in web.xml and the access the values of these variables inside my Java application. The reason I want to do this is because I would like to be able to change the values of these variables without having to recompile the code. What is the best… >>> More

Related posts about environment-variables

System Expandable-String Environment Variables Can’t Reference User Environment Variables

as seen on Super User - Search for 'Super User'
Hi, I’ve run into a bit of a situation with Windows environment variables. I’ve narrowed it down to what may or may not makes sense and/or possibly be by design. It seems that expandable-string environment variables of the local machine cannot reference environment variables of the current user. For… >>> More
PowerShell: can't modify environment variables

as seen on Super User - Search for 'Super User'
I have an environment variable set via "system properties - advanced - Environment Variables". I modified the variable's value. In cmd, I see the new value. In PowerShell, the value is still the old value. Trying to set it with [Environment]::SetEnvironmentVariable doesn't have any effect. >>> More
Set environment variables from within a bash shell

as seen on Super User - Search for 'Super User'
Hi, Is there a way to set environment variables from within a (bash) shell script? I want to set some environment variables on some servers using a small script rather than typing. Some forum posts believe it is impossible. Any Ideas? >>> More
Is there a way to set Windows environment variables from the command line PERMANENTLY

as seen on Super User - Search for 'Super User'
Is there any way to set permanently set an environment variable system wide from the command line in Windows? something like >systemset newVar=foo or a file to edit would work well too. >>> More
Change environment variables as standard user (Windows 7)

as seen on Super User - Search for 'Super User'
When clicking on "Advanced system settings", I need to login as the administrator and hence only edit the administrators environment variables (in addition to the machine wide ones). How do I edit the environment variables of a standard user? Details With the migration to Windows 7, I decided to… >>> More