Bill Digman is a Java EE / Servlet enthusiast and Open Source enthusiast who loves working with Caucho's Resin Servlet Container, a Java EE Web Profile Servlet Container. Bill has posted 12 posts at DZone. You can read more from them at their website. View Full User Profile

Tutorial covering JSP 2.2 and Servlets 3.0 with OpenSource Resin Servlet Container: Part 1

10.25.2012
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Creating your first JSP

JSP pages are also Servlets. JSP is a templating language to define Servlets that allows you to focus on the HTML instead of the Java code. A JSP is like a Servlet turned inside out. Essentially a JSP page is translated and compiled into a servlet. JSP is similar to ASP and PHP in concept and scope. ASP predates JSP and early JSP and ASP use a lot of the same concepts (JSP is a bit like a Java clone of ASP, ASP was a reaction to Cold Fusion, PHP was the first Open Source Cold Fusion like thing so you could say that they are all cousins). JSP is closest in concept to ASP.

Templates/JSTL versus Java scriptlets

JSP allows you to freely mix and match Java code and HTML. However, that is called Java Scriptlets and that is frowned upon.

JSP started to adopt more of a classic templating approach Freemarker, Velocity and Smarty (PHP based templating) approach to templating. Those templating engines don't allow mixing the programming language with the templating language. This allows the templating language to be a simple view logic language, and keeps the templates smaller and more readable.

JSP uses JSTL and the Unified EL to accomplish things that Smarty, Freemarker and Velocity accomplish. We will use this JSTL/EL approach because it is consider a best practice and it makes the code easier to read.

/WEB-INF/pages/book-list.jsp listing
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix ="c" %>
<!DOCTYPE HTML>

<html>
<head>
<title>Book listing</title>
</head>
<body>


<table>
	<tr>
		<th>Title</th>
		<th>Description</th>
		<th>Price</th>
		<th>Publication Date</th>
		</tr>

	<c:forEach var="book" items="${books}">
		<tr>
			<td>${book.title}</td>
			<td>${book.description}</td>
			<td>${book.price}</td>
			<td>${book.pubDate}</td>
		</tr>
	</c:forEach>
</table>

</body>
</html>

Bill Digman is a Java EE / Servlet enthusiast and Open Source enthusiast who loves working with Caucho's Resin Servlet Container, a Java EE Web Profile Servlet Container.

 

Caucho's Resin OpenSource Servlet Container

 

Java EE Web Profile Servlet Container

 

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(Note: Opinions expressed in this article and its replies are the opinions of their respective authors and not those of DZone, Inc.)

Comments

Bruce Phillips replied on Thu, 2012/10/25 - 11:00am

This is a good article but it could be made much,  much better by providing two items

 

1.  Code download

2.  PDF version that a reader can save to read later or to refer to when needed.  It is very tedious to click through 15 web pages where on each  page the ads and other crap overwhelm the important content.

 

 

Bill Digman replied on Thu, 2012/10/25 - 3:12pm in response to: Bruce Phillips

I'll work on a PDF version right away.

How do you suggest I provide code download?  

Bill Digman replied on Thu, 2012/10/25 - 4:29pm in response to: Bill Digman

The PDF version is attached

Bruce Phillips replied on Thu, 2012/10/25 - 7:02pm in response to: Bill Digman

Thank you very much for the PDF version. 

For the code you could use Eclipse - Export as archived projected which creates a zip of your project.  Other Eclipse users can then import the project directly from the zip.  Non-Eclipse users can unzip the project and view the files also.

 

Henk De Boer replied on Fri, 2012/10/26 - 12:11pm

It's thorough and explains things well, but it's a somewhat confusing setup.

The material being explained; Servlets, JSP and then Scriptlets vs JSTL feels like it comes straight from the early 2000s, but then we do see relative modern annotations on the Servlets and even the use of CDI.

Bill Digman replied on Thu, 2012/11/01 - 11:38am in response to: Henk De Boer

Yep... This is true. In a future article we are going to cover a more CDI centric approach covering @Produces @RequestScoped. Later we will cover JPA, JAX-RS, JCache, etc. and yes maybe even JSF (grumble, grumble)....

Bill Digman replied on Thu, 2012/11/01 - 11:39am

Stay tuned. I have a lot more to say. I think Java EE is more of a cafeteria plan than a one size fits all. You can use Servlets, CDI and JSP for model 2 apps. JAX-RS for RIA clients. Websockets, JCache, etc. Most tutorials wrt Java EE seem to really push JSF and EJB. If you tie Java EE to JSF and EJB and I think it turns a lot of folks off. Java EE is more than this.

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Keenee Madison replied on Thu, 2013/10/31 - 6:33am

JSP technology enables rapid development of web-based applications that are server- and platform-independent.  

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