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A simple test application for JSTL 

Fang
Joined:
08/13/2009
Posts:
164

March 23, 2010 03:50:11    Last update: August 18, 2010 21:59:52
This is a simple web application with a single servlet and a single JSP page. It is intended to be a test bed for JSTL tags. You may want to store all syntax, rules, and exceptions in your head, but in my opinion nothing beats a simple test program that allows you play with it all you want. So here it is (build with Maven).

Prerequisites:


Steps:
  1. The directory layout 
    ./pom.xml
./src
./src/main
./src/main/java
./src/main/java/jstl
./src/main/java/jstl/demo
./src/main/java/jstl/demo/JSTLDemoServlet.java
./src/main/resources
./src/main/webapp
./src/main/webapp/home.jsp
./src/main/webapp/index.jsp
./src/main/webapp/WEB-INF
./src/main/webapp/WEB-INF/web.xml

  2. Contents of pom.xml 
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>jstl-demo</groupId>
    <artifactId>jstl-demo</artifactId>
    <packaging>war</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>jstl-demo Maven Webapp</name>
    <url>http://maven.apache.org</url>

    <repositories>
	<repository>
	    <id>maven2-repository.dev.java.net</id>
	    <name>Java.net Repository for Maven</name>
	    <url>http://download.java.net/maven/2/</url>
	    <layout>default</layout>
	</repository>
    </repositories>

    <dependencies>
	<dependency>
	    <groupId>javax</groupId>
	    <artifactId>javaee-api</artifactId>
	    <version>6.0-SNAPSHOT</version>
	    <scope>provided</scope>
	</dependency>

	<dependency>
	    <groupId>javax.servlet</groupId>
	    <artifactId>jstl</artifactId>
	    <version>1.2</version>
	    <scope>compile</scope>
	</dependency>
    </dependencies>

    <build>
	<finalName>jstl-demo</finalName>
    </build>
</project>

  3. JSTLDemoServlet 
    package jstl.demo;

import java.io.IOException;
import javax.servlet.*;
import javax.servlet.http.*;

public class JSTLDemoServlet extends HttpServlet {
    public void service(HttpServletRequest req,
		        HttpServletResponse resp) 
		throws IOException, ServletException {
	req.setAttribute("world", "John Doe");
	RequestDispatcher d = req.getRequestDispatcher("home.jsp");
	d.forward(req, resp);
    }
}

  4. The contents of home.jsp: 
    <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<html>
<head>
<title>JSTL Test Page</title>
</head>

<body>
Hello <c:out value="${world}"/>!
</body>
</html>

  5. index.jsp 
    <html>
<head>
<title>Index</title>
</head>

<body>
<h2>Hello World!</h2>

<script type="text/javascript">
    window.location = "demo";
</script>
</body>
</html>

  6. web.xml 
    <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
	 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	 version="2.5">
    <display-name>Simple JSTL Demo Application</display-name>
    <servlet>
        <servlet-name>jstldemo</servlet-name>
        <servlet-class>jstl.demo.JSTLDemoServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>jstldemo</servlet-name>
        <url-pattern>/demo</url-pattern>
    </servlet-mapping>
</web-app>


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