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Jakarta Struts Cookbook
book

Jakarta Struts Cookbook

by Bill Siggelkow
February 2005
Intermediate to advanced content levelIntermediate to advanced
528 pages
12h 53m
English
O'Reilly Media, Inc.
Content preview from Jakarta Struts Cookbook

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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Publisher Resources

ISBN: 059600771XSupplemental ContentErrata Page