IBM R1 - page 29

The first block of executable code is a page directive that applies to the entire page and specifies

the language of the page as Java and sets the MIME type and character encoding to use for the

response:

<%@ page language="java" contentType="text/html;charset=UTF-8" %>

Including tag library descriptor files

The next block of code is made up of taglib directives. These identify the names of the tag

libraries associated with the page. They also identify the prefixes to use before tags from each

library.

<%@ taglib uri="/WEB-INF/tld/Struts-bean.tld" prefix="bean" %>

<%@ taglib uri="/WEB-INF/tld/Struts-html.tld" prefix="html" %>

<%@ taglib uri="/WEB-INF/tld/Struts-logic.tld" prefix="logic" %>

<%@ taglib uri="/WEB-INF/tld/lms.tld" prefix="lms" %>

Referencing Struts tags

The next line of code is an html tag from the Struts-html tag library. The “html” before the colon

is the prefix representing the Struts-html tag library and the “html” after the colon represents the

tag in that library named html:

<html:html locale="true">

The value “true” in the locale attribute indicates to set the current locale for the user if needed.

This prompts the servlet to retrieve the locale from the requesting browser. The value returned

determines which language-version resources to use for the rest of the session.

Localizing page content

The next group of tags makes up the head HTML tag. The META tag defines the character set to

use for the HTTP response message header. In the next line, we see another JSP tag at work. The

message tag in the lms tag library is programmed to retrieve the resource key specified in the key

attribute from the .properties resource file and display it on the page. Since the content of the

application.title resource key in the ApplicationResource.properties file for the LMM application

contains the text, “IBM Lotus Learning Management System,” this is text that displays as the title

on the adminTemplate page. See “Updating page text.”

<head>

Including standard JSP actions

The next line of code is a standard JSP action called the getProperty tag. This tag and any others

that have a jsp prefix are standard JSP actions and are available for use in all JSPs. See the

JavaServer Pages 1.2 Specification downloadable from

http://www.jcp.org/aboutJava/communityprocess/final/jsr053/for more details. The

getProperty tag initializes a JavaBean, which is a reusable Java component, and retrieves a

property from it.

Determining the user’s browser type and language preference

The property being requested, the “styleSheetLink” property, contains the name of the

appropriate CSS file to apply to the page based on the type of browser that is submitting the user

request.

<jsp:getProperty name="BrowserSniffer" property="styleSheetLink"/>

24 IBM Lotus Learning Management System Release 1 Customization Guide