The Advantages of JSP
By: aathishankaran Printer Friendly Format
The Advantages of JSP
JSP
has a number of advantages over many of its alternatives. Here are a few of
them.
Versus
Active Server Pages (ASP)
ASP
is a competing technology from Microsoft. The advantages of JSP are twofold.
First, the dynamic part is written in Java, not VBScript or another
ASP-specific language, so it is more powerful and better suited to complex
applications that require reusable components. Second, JSP is portable to
other operating systems and Web servers; you aren’t locked into Windows
NT/2000
and IIS. You could make the same argument when comparing JSP to Cold Fusion;
with JSP you can use Java and are not tied to a particular server product.
Versus PHP
PHP
is a free, open-source HTML-embedded scripting language that is somewhat
similar to both ASP and JSP. The advantage of JSP is that the dynamic part is
written in Java, which you probably already know
Listing
a sample JSP page
<!DOCTYPE
HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD><TITLE>Welcome
to Our Store</TITLE></HEAD>
<BODY>
<H1>Welcome
to Our Store</H1>
<SMALL>Welcome,
<!--
User name is "New User" for first-time visitors -->
<%=
Utils.getUserNameFromCookie(request) %>
To
access your account settings, click
<A
HREF="Account-Settings.html">here.</A></SMALL>
<P>
Regular
HTML for all the rest of the on-line store’s Web page.
</BODY>
</HTML>
Extensive
API for networking, database access, distributed objects, and the like,
whereas PHP requires learning an entirely new language.
Versus Pure Servlets
JSP
doesn’t provide any capabilities that couldn’t in principle be
accomplished with a servlet. In fact, JSP documents are automatically
translated into servlets behind the scenes. But it is more convenient to write
(and to modify!) regular HTML than to have a zillion println statements that
generate the HTML. Plus, by separating the presentation from the content, you
can put different people on different tasks: your Web page design experts can
build the HTML using familiar tools and leave places for your servlet
programmers to insert the dynamic content.
Versus
Server-Side Includes (SSI)
SSI
is a widely supported technology for inserting externally defined pieces into
a static Web page. JSP is better because you have a richer set of tools for
building that external piece and have more options regarding the stage of the
HTTP response at which the piece actually gets inserted. Besides, SSI is
really intended only for simple inclusions, not for “real” programs that
use form data, make database connections, and the like.
Versus JavaScript
JavaScript,
which is completely distinct from the Java programming language, is normally
used to generate HTML dynamically on the client, building parts of the Web
page as the browser loads the document. This is a useful capability but only
handles situations where the dynamic information is based on the client’s
environment. With the exception of cookies, the HTTP request data is not
available to client-side JavaScript routines. And, since JavaScript lacks
routines for network programming, JavaScript code on the client cannot access
server-side resources like databases, catalogs, pricing information, and the
like. JavaScript can also be used on the server, most notably on Netscape
servers and as a scripting language for IIS. Java is far more powerful,
flexible, reliable, and portable.
Versus Static HTML
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1. help, i want to migrate my system (asp to jsp)
View Tutorial By: gendull at 2007-02-25 21:03:20
2. Do you mind iff I quote a few off your posts as lo
View Tutorial By: tecnico informatico at 2017-02-22 11:18:52