Hello World with Spring 3.0

This post explains how to implement a simple web application with Spring 3.0 on Tomcat.

I used the following tools:

Java 1.6.0_22
Tomcat 6.0.20
Spring 3.0.4
NetBeans 6.9

1. In your IDE create a project called Hello World

1. Add the following libraries:
  - commons-logging.jar
  - org.springframework.aop-3.0.4.RELEASE.jar
  - org.springframework.asm-3.0.4.RELEASE.jar
  - org.springframework.aspects-3.0.4.RELEASE.jar
  - org.springframework.beans-3.0.4.RELEASE.jar
  - org.springframework.context-3.0.4.RELEASE.jar
  - org.springframework.context.support-3.0.4.RELEASE.jar
  - org.springframework.core-3.0.4.RELEASE.jar
  - org.springframework.expression-3.0.4.RELEASE.jar
  - org.springframework.instrument-3.0.4.RELEASE.jar
  - org.springframework.instrument.tomcat-3.0.4.RELEASE.jar
  - org.springframework.jdbc-3.0.4.RELEASE.jar
  - org.springframework.jms-3.0.4.RELEASE.jar
  - org.springframework.orm-3.0.4.RELEASE.jar
  - org.springframework.oxm-3.0.4.RELEASE.jar
  - org.springframework.test-3.0.4.RELEASE.jar
  - org.springframework.transaction-3.0.4.RELEASE.jar
  - org.springframework.web-3.0.4.RELEASE.jar
  - org.springframework.web.portlet-3.0.4.RELEASE.jar
  - org.springframework.web.servlet-3.0.4.RELEASE.jar
  - org.springframework.web.struts-3.0.4.RELEASE.jar

Create the file /WEB-INF/web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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">

    <display-name>HelloWorld</display-name>
    <servlet>
        <servlet-name>HelloWorld</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>HelloWorld</servlet-name>
        <url-pattern>*.html</url-pattern>
    </servlet-mapping>

    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
    
</web-app>

Create the file /WEB-INF/HelloWorld-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    <context:component-scan base-package="it.helloworld.controller" />

    <bean id="viewResolver"
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/WEB-INF/views/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>

</beans>

Create the file index.jsp in the application root

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Welcome Page</title>
    </head>
    <body>
        <jsp:forward page="helloWorld.html" />
    </body>
</html>

Create the directory /WEB-INF/views and the file /WEB-INF/views/helloWorld.jsp

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <h1>Hello World!</h1>
    </body>
</html>

Create the file /WEB-INF/classes/it/helloworld/controller/HelloWorldController.java

package it.helloworld.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class HelloWorldController {

    @RequestMapping(value={"/index", "/helloWorld"})
    public ModelAndView helloWorld() {
        return new ModelAndView("helloWorld");
    }
}

Deploy and launch the application

Hello World with Spring 3.0

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