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. 1. In your IDE create a project called Hello World

1. 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

1. 1. Create the file /WEB-INF/web.xml
      
      XHTML

      <?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>

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      <?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>

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

      <?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>

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      <?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>

1. 1. Create the file index.jsp in the application root
      
      PHP

      <%@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>

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      <%@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>

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

      <%@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>

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      <%@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>

1. 1. Create the file /WEB-INF/classes/it/helloworld/controller/HelloWorldController.java
      
      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"); } }

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      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");     } }

1. Deploy and launch the application