Spring 3 MVC hello world example

By mkyong | August 2, 2011 | Updated : June 15, 2015

In this tutorial, we show you a Spring 3 MVC hello world example, using Maven build tool.

Technologies used :

  1. Spring 3.2.13.RELEASE
  2. Maven 3
  3. JDK 1.6
  4. Eclipse 4.4
  5. Boostrap 3
Spring 4 MVC XML
Try this Spring 4 MVC hello world example.
Spring 3 MVC Annotation
Try this Spring 3 MVC hello world annotation example.

1. Project Structure

Download the project source code and review the project folder structure :

 

2. Maven

A pom.xml template to quick start a Spring MVC project, it defines Spring 3 dependencies, an embedded Jetty container and Eclipse workspace configuration.

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>com.mkyong</groupId>

	<artifactId>spring3-web</artifactId>

	<packaging>war</packaging>

	<version>1.0-SNAPSHOT</version>

	<name>spring css</name>

	<properties>

		<jdk.version>1.6</jdk.version>

		<spring.version>3.2.13.RELEASE</spring.version>

		<jstl.version>1.2</jstl.version>

	</properties>

	<dependencies>

		<dependency>

			<groupId>org.springframework</groupId>

			<artifactId>spring-webmvc</artifactId>

			<version>${spring.version}</version>

		</dependency>

		<dependency>

			<groupId>javax.servlet</groupId>

			<artifactId>jstl</artifactId>

			<version>${jstl.version}</version>

		</dependency>

	</dependencies>

	<build>

	  <plugins>

		<plugin>

			<groupId>org.apache.maven.plugins</groupId>

			<artifactId>maven-compiler-plugin</artifactId>

			<version>3.3</version>

			<configuration>

				<source>${jdk.version}</source>

				<target>${jdk.version}</target>

			</configuration>

		</plugin>

		<!-- embedded Jetty server, for testing -->

		<plugin>

			<groupId>org.eclipse.jetty</groupId>

			<artifactId>jetty-maven-plugin</artifactId>

			<version>9.2.11.v20150529</version>

			<configuration>

				<scanIntervalSeconds>10</scanIntervalSeconds>

				<webApp>

					<contextPath>/spring3</contextPath>

				</webApp>

			</configuration>

		</plugin>

		<!-- configure Eclipse workspace -->

		<plugin>

			<groupId>org.apache.maven.plugins</groupId>

			<artifactId>maven-eclipse-plugin</artifactId>

			<version>2.9</version>

			<configuration>

				<downloadSources>true</downloadSources>

				<downloadJavadocs>true</downloadJavadocs>

				<wtpversion>2.0</wtpversion>

				<wtpContextName>spring3</wtpContextName>

			</configuration>

		</plugin>

	  </plugins>

	</build>

  </project>
 

3. Controller & Mapping

The @RequestMapping has been available since 2.5, but now enhanced to support REST style URLs.

HelloController.java
package com.mkyong.web.controller;

import org.springframework.stereotype.Controller;

import org.springframework.ui.ModelMap;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.servlet.ModelAndView;

@Controller

public class HelloController {

	@RequestMapping(value = "/", method = RequestMethod.GET)

	public String printWelcome(ModelMap model) {

		model.addAttribute("message", "Spring 3 MVC Hello World");

		return "hello";

	}

	@RequestMapping(value = "/hello/{name:.+}", method = RequestMethod.GET)

	public ModelAndView hello(@PathVariable("name") String name) {

		ModelAndView model = new ModelAndView();

		model.setViewName("hello");

		model.addObject("msg", name);

		return model;

	}

}

4. JSP Views

A JSP page to display the value, and include bootstrap css and js.

html4strict
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%>

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

<!DOCTYPE html>

<html lang="en">

<head>

<spring:url value="/resources/core/css/hello.css" var="coreCss" />

<spring:url value="/resources/core/css/bootstrap.min.css" var="bootstrapCss" />

<link href="${bootstrapCss}" rel="stylesheet" />

<link href="${coreCss}" rel="stylesheet" />

</head>

<nav class="navbar navbar-inverse navbar-fixed-top">

  <div class="container">

	<div class="navbar-header">

		<a class="navbar-brand" href="#">Spring 3 MVC Project</a>

	</div>

  </div>

</nav>

<div class="jumbotron">

  <div class="container">

	<h1>${title}</h1>

	<p>

		<c:if test="${not empty name}">

			Hello ${name}

		</c:if>

		<c:if test="${empty name}">

			Welcome Welcome!

		</c:if>

    </p>

    <p>

	<a class="btn btn-primary btn-lg" href="#" role="button">Learn more</a>

    </p>

  </div>

</div>

<div class="container">

  <div class="row">

	<div class="col-md-4">

		<h2>Heading</h2>

		<p>ABC</p>

		<p>

		<a class="btn btn-default" href="#" role="button">View details</a>

		</p>

	</div>

	<div class="col-md-4">

		<h2>Heading</h2>

		<p>ABC</p>

		<p>

		<a class="btn btn-default" href="#" role="button">View details</a>

		</p>

	</div>

	<div class="col-md-4">

		<h2>Heading</h2>

		<p>ABC</p>

		<p>

		<a class="btn btn-default" href="#" role="button">View details</a>

		</p>

	</div>

  </div>

  <hr />

  <footer>

	<p>© Mkyong.com 2015</p>

  </footer>

</div>

<spring:url value="/resources/core/css/hello.js" var="coreJs" />

<spring:url value="/resources/core/css/bootstrap.min.js" var="bootstrapJs" />

<script src="${coreJs}"></script>

<script src="${bootstrapJs}"></script>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>

</body>

</html>

5. Spring XML Configuration

5.1 Enable component scanning, view resolver and resource mapping.

spring-web-servlet.xml
<beans xmlns="http://www.springframework.org/schema/beans"

	xmlns:context="http://www.springframework.org/schema/context"

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

	xmlns:mvc="http://www.springframework.org/schema/mvc"

	xsi:schemaLocation="

        http://www.springframework.org/schema/beans

        http://www.springframework.org/schema/beans/spring-beans-3.2.xsd

        http://www.springframework.org/schema/mvc

        http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd

        http://www.springframework.org/schema/context

        http://www.springframework.org/schema/context/spring-context-3.2.xsd">

	<context:component-scan base-package="com.mkyong.web" />

	<bean

		class="org.springframework.web.servlet.view.InternalResourceViewResolver">

		<property name="prefix">

			<value>/WEB-INF/views/jsp/</value>

		</property>

		<property name="suffix">

			<value>.jsp</value>

		</property>

	</bean>

	<mvc:resources mapping="/resources/**" location="/resources/" />

	<mvc:annotation-driven />

</beans>

5.2 Declares a DispatcherServlet in web.xml. If the Spring XML configuration file is NOT specified, Spring will look for the {servlet-name}-servlet.xml.

In this example, Spring will look for the spring-web-servlet.xml file.

web.xml
<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>Spring3 MVC Application</display-name>

	<servlet>

		<servlet-name>spring-web</servlet-name>

		<servlet-class>

                    org.springframework.web.servlet.DispatcherServlet

                </servlet-class>

		<load-on-startup>1</load-on-startup>

	</servlet>

	<servlet-mapping>

		<servlet-name>spring-web</servlet-name>

		<url-pattern>/</url-pattern>

	</servlet-mapping>

</web-app>

You can define a Spring XML file via contextConfigLocation.

web.xml
	<servlet>

		<servlet-name>spring-web</servlet-name>

		<servlet-class>

                     org.springframework.web.servlet.DispatcherServlet

                </servlet-class>

		<load-on-startup>1</load-on-startup>

		<init-param>

			<param-name>contextConfigLocation</param-name>

			<param-value>/WEB-INF/spring-mvc-config.xml</param-value>

		</init-param>

	</servlet>

        <servlet-mapping>

		<servlet-name>spring-web</servlet-name>

		<url-pattern>/</url-pattern>

	</servlet-mapping>

6. Demo

The pom.xml file defines an embedded Jetty container. Issues mvn jetty:run to start the project.

Terminal
$ mvn jetty:run

...

[INFO] Started Jetty Server

[INFO] Starting scanner at interval of 10 seconds.

URL : http://localhost:8080/spring3

URL : http://localhost:8080/spring3/hello/mkyong

7. WAR File

To create a WAR file for deployment :

Terminal
your-project$ mvn war:war

A WAR file will be created in project\target\ folder.

${Project}\target\spring3-web-1.0-SNAPSHOT.war

Download Source Code

Download it – spring3-mvc-maven-xml-hello-world.zip (51 KB)

References

  1. What new in Spring 3
  2. Spring 3 MVC and JSR303 @Valid example
  3. Spring 3 MVC and RSS feed example
  4. Spring 3 MVC and XML example
  5. Spring 3 MVC and JSON example

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