November 2002
Intermediate to advanced
464 pages
14h 34m
English
Content preview from Programming Jakarta Struts
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JavaServer Pages
The first thing to understand about
JavaServer Pages is that
it’s a natural extension to the Java Servlet
technology. In fact, after some preprocessing by a translator, JSP
pages end up being nothing more than Java servlets. This is a point
that many beginning developers have a hard time understanding. JSP
pages are text documents that have a .jsp
extension and contain a combination of static HTML and
XML-like tags and
scriptlets. The tags and scriptlets encapsulate the logic that
generates the content for the pages. The .jsp
files are preprocessed and turned into .java
files. At this point, a Java compiler compiles the source and creates
a .class file that can be executed by a servlet
container.
The translator that turns the .jsp file into a
.java file takes care of the tedious work of
creating a Java servlet from the JSP page. Figure 1-2 illustrates how a JSP page is translated and
compiled into a servlet.
Figure 1-2. A JSP page is translated and compiled into a Java servlet
JSP technology has become an extremely popular solution for building web applications using the Java platform. JSP offers several advantages over its competitors:
JSP is a specification, not a product. Developers are able to choose a “best of breed” approach.
JSP pages are compiled, not interpreted, which can lead to better performance.
JSP pages support both scripting and access to the full ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.