February 2005
Intermediate to advanced
528 pages
12h 53m
English
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2.2. Eliminating Tag Library Declarations
Problem
You want to avoid having to add taglib elements to
the web.xml file every time you want to use a
new tag library.
Solution
Create a JSP file containing taglib directives
that refer to the absolute URIs for the tag libraries you are using.
Example 2-4 (taglibs.inc.jsp)
shows a JSP file containing the taglib
declarations for the Struts bean,
html, and logic tag libraries
as well as the JSTL core and formatting tag libraries.
Example 2-4. Common tag library declarations
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean" %> <%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %> <%@ taglib uri="http://jakarta.apache.org/struts/tags-logic" prefix="logic" %> <%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %> <%@ taglib uri="http://java.sun.com/jstl/fmt" prefix="fmt" %>
Then include this file in all of your JSP pages using the
include directive:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<!-- start taglib -->
<%@ include file="/includes/taglibs.inc.jsp" %>
<!-- end taglib -->
<html:html>
<body>
...Since you are using the absolute URIs in the
taglib directive, you aren't
required to enter a corresponding taglib element
in the application's web.xml
file.
Discussion
If you are using a JSP 1.2/Servlet 2.3 compliant container, such as
Tomcat 4.x or later, you can use an absolute URI in the
taglib directive on the ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.