spring 3 mvc hello world + mavern +jetty

spring 3 mvc hello world + mavern +jetty

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 :

spring 3 mvc hello world + mavern +jetty
 

2. Maven

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

spring 3 mvc hello world + mavern +jetty

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

spring 3 mvc hello world + mavern +jetty

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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