Re: Dealing with application names in a JEE web app

Lew <>
Mon, 23 May 2011 17:02:51 -0400
You left out too much context.

markspace wrote:

Lew wrote:

markspace wrote:

So how do folks write their apps so that they can handle being
deployed under different names?

Relative URLS.

I found a use-case [sic] where this doesn't work.

No, you didn't. I meant relative to the app context, not with stupid "../"

Templates are used by various other pages in the web app. They have a static
location, but their links are processed as if the template's "location" in the
directory hierarchy was the location of the template client.

Example: I have a template at /rsrc/priv/lnf-template.xhtml which includes
other resources. Abbreviated example:


<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
<html xmlns=""

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<link href="../css/style.css" rel="stylesheet" type="text/css" />

What? No!

<link href="/css/style.css" rel="stylesheet" type="text/css" />

Here's a line from one of my own personal facelet projects:
<ui:composition template="/WEB-INF/templates/template.xhtml">

Here are a couple of lines from that template file:

   <h:outputStylesheet name="/css/purrtones.css" />
   <ui:insert name="header">
     <h:graphicImage id="logo" value="/images/Duncan_and_the_purrtones.png"
                     alt="#{bundle.bandname} logo" styleClass="logo"

All those paths are relative to the deployed application name, which is
"/purrtones" by default, but as you say can change. Thus, the image URL
becomes, e.g.,

<ui:insert name="title">
Facelets Template


That link href to the style sheet is processed by the client, but the client
could be any page in the directory hierarchy.

For example for a client from the root directory (/readPost.xhtml), that
relative link in the template doesn't work.


<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
<html xmlns=""

<ui:composition template="/rsrc/priv/lnf-template.xhtml" >

That would translate to "<application-context>/rsrc/priv/lnf-template.xhtml",
and I am having a hard time correlating that to the CSS example above.

Hello from Facelets



Pretty ugly, if you ask me.

I use relative links in templates all the time. But you have to start them
from "/", which translates to the application context root, which is the thing
you're trying not to repeat.

Honi soit qui mal y pense.

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