Using JSTL

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Using JSTL

See

"Troubleshooting Duke's Bookstore Database Problems" on page 102

for help with

diagnosing common problems.

Using JSTL

JSTL includes a wide variety of tags that fit into discrete functional areas. To reflect this, as well
as to give each area its own namespace, JSTL is exposed as multiple tag libraries. The URIs for
the libraries are as follows:

Core

http://java.sun.com/jsp/jstl/core

XML

http://java.sun.com/jsp/jstl/xml

Internationalization

http://java.sun.com/jsp/jstl/fmt

SQL

http://java.sun.com/jsp/jstl/sql

Functions

http://java.sun.com/jsp/jstl/functions

Table 71

summarizes these functional areas along with the prefixes used in this tutorial.

TABLE 71

JSTL Tags

Area

Subfunction

Prefix

Core

Variable support

Flow control

URL management

Miscellaneous

XML

Core

Flow control

Transformation

I18N

Locale

fmt

Message formatting

Number and date formatting

Database

SQL

sql

Functions

Collection length

String manipulation

Thus, the tutorial references the JSTL core tags in JSP pages by using the following taglib
directive:

<%@ taglib uri=

"http://java.sun.com/jsp/jstl/core" prefix="c" %>

Using JSTL

Chapter 7 · JavaServer Pages Standard Tag Library

203