February 2005
Intermediate to advanced
528 pages
12h 53m
English
Content preview from Jakarta Struts CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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3.17. Using Frames
Problem
You need to reference an Action or JSP page from within one frame to another.
Solution
Use the Struts
html:frame
tag to create frame elements with the proper URLs for your Struts
application, as in Example 3-20
(frame_test.jsp).
Example 3-20. Generating a frame set with Struts
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %>
<frameset cols="50%,*">
<html:frame frameName="_frame1"
page="/frame1.jsp"
marginwidth="10"
marginheight="10"
scrolling="auto"
frameborder="1"/>
<html:frame frameName="_frame2"
page="/frame2.jsp"
marginwidth="10"
marginheight="10"
scrolling="auto"
frameborder="1"/>
</frameset>Within the individual frame's source JSP, use the
target attribute on the
html:link and
html:form
tags to refer to the other frame.
The JSP in Example 3-21
(frame1.jsp) demonstrates this approach.
Example 3-21. Frame with link to other frame
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %>
<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<html>
<head>
<title>Struts Cookbook - Chapter 04: Frame Test</title>
</head>
<body bgcolor="white">
<h2>Frame 1</h2>
<html:link href="frame2.jsp?calledBy=FRAME_1" target="_frame2">
Call Frame2
</html:link>
<p>
Message received:
<c:out value="${FrameForm.map.message}"/>
</body>
</html>Likewise, frame2.jsp shown in Example ...
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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.