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 :
- Spring 3.2.13.RELEASE
- Maven 3
- JDK 1.6
- Eclipse 4.4
- Boostrap 3
Try this Spring 4 MVC hello world example.
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.
<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.
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.
<%@ 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.
<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-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.
<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.
$ 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 :
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
References
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