With JSP, does the taglib URI mean that my site is reliant on the URI resolving?
Question
I'm trying to implement a sitemesh decorator in my site. The example on their site has a full URI linking to their site for the taglib part of the decorator file:
<%@ taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="decorator" %>
Does this mean that my site is reliant on being able to access that site? Because i want to deploy inside an intranet which can't access the outside world.
Thanks
Solution
No, it does not. The URI declared in taglib
will be resolved locally as long as it matches the URI declared in tag library descriptor (or in your web.xml
, depending on what JSP version your container implements).
See Java EE tutorial for more details.
OTHER TIPS
No. The URI is a Universal Resource Identifier, it is NOT a locator (URL). This means that the URI is used to uniquely identify each taglib in an internal registry of taglibs, much like a key is used to set/get values from a HashMap
or Hashtable
in Java.
According to the web application spec from Sun, resolving the URIs to actual tag libraries that can be loaded/called by the application takes place in the following order:
- Check the
web.xml
file for matchingtaglib
tags that have the given URI in them and then follow thetaglib-location
tag to actually load the TLD. - If no match with #1 was found, recursively check the
META-INF
directory of all the JARs in the application for TLDs that contain the URI that was specified.
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" >
where the uri
attribute value resolves to a location the container understands and the prefix
attribute informs a container what bits of markup are custom actions.