2 JSTL 1.1 • November 2003
The other key aspect of JSTL is that it provides standard actions and standard EL
functions for functionality most often needed by page authors. These cover the
following topics:
■ Accessing URL-based resources
■ Internationalization (i18n) and text formatting
■ Relational database access (SQL)
■ XML processing
■ String manipulation
1.2 Multiple Tag Libraries
A tag library is a collection of actions that encapsulates functionality to be used from
within a JSP page. JSTL includes a wide variety of actions that naturally fit into
discrete functional areas. This is why JSTL, although referred to as the standard tag
library (singular), is exposed via multiple tag libraries to clearly identify the
functional areas it covers, as well as to give each area its own namespace. The tables
below lists these functional areas along with the URIs used to reference the libraries.
The tables also show the prefixes used in this specification (although page authors
are free to use any prefix they want).
JSTL Tag Libraries
1.3 Container Requirement
JSTL 1.1 requires a JSP 2.0 web container. Please note that the expression language is
part of the JSP specification starting with JSP 2.0.
Functional Area URI Prefix
core
http://java.sun.com/jsp/jstl/core c
XML processing
http://java.sun.com/jsp/jstl/xml x
I18N capable formatting
http://java.sun.com/jsp/jstl/fmt fmt
relational db access
(SQL)
http://java.sun.com/jsp/jstl/sql sql
Functions
http://java.sun.com/jsp/jstl/functions fn
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