Spring MVC Hello World Example

This post will describe step by step process of creating spring MVC project in eclipse with following technologies:

  • Eclipse Mars (4.5.0)
  • Java 1.8
  • Maven
  • Spring framework (core and web)

Following are the steps to create web based project with spring MVC:

Create Maven project in eclipse

First step to create maven based project with Archetype web and update pom.xml file as below:

<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">
	<name>Spring MVC</name>


		<!-- Spring MVC -->

		<!-- Servlet API -->

Update web.xml

Update web.xml file under webapp/WEB-INF/web.xml to configure dispatcher servlet as below:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
	<!-- Dispatcher servlet configuration -->

	<display-name>Archetype Created Web Application</display-name>

DispatcherServlet is a root servlet to receive all the request from client and delegate request to appropriate controllers according to URL.

dispatcher is a root servlet name and spring will look the configuration with the same name under webapp/WEB-INF/dispatcher-servlet.xml.

Create dispatcher-servlet.xml

Create same file under webapp/WEB-INF/ directory as below:

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

	<!--Scan all the spring components including services, controllers etc. -->
	<context:component-scan base-package="com.threadminions" />
	<context:annotation-config />

	<!-- Resolver configuration to resolve a view -->
	<bean 		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="WEB-INF/html/" />
		<property name="suffix" value=".html" />

Here, we have defined InternalResourceViewResolver which resolves view for a request and we have defined prefix as WEB-INF/html/ and suffix as .html which means that all the views should be in WEB-INF/html folder and every view will have suffix .html.

Create controllers

Create a package name com.threadminions.controllers and create a following class in this.

package com.threadminions.controllers;

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

public class ExampleController {

	 * Returns a String message
	@RequestMapping(value = "getMessage", method =RequestMethod.GET)
	public @ResponseBody String getMessage()
		return "Spring MVC Hello World Example";

	 * Returns a view which is basically a HTML page
	@RequestMapping(value = "getHelloWorld", method = RequestMethod.GET)
	public ModelAndView getHelloWorld()
		return new ModelAndView("hello_world");

In above code, there are two request mappings getMessage and getHelloWorld which returns a string message and a html view respectively.

In getHelloWorld mapping, it returns a model namely hello_world which will be resolved by view resolver and spring will look this view as hello_world.html in WEB-INF/html directory.

Create HTML views

Create hello_world.html view under webapp/WEB-INF/ directory as below:

<!DOCTYPE html>
<title>Spring MVC</title>
<h1>Welcome to Spring MVC world</h1>

This is all done for web based hello_world application in spring framework.

Run this project
Right click on project -> Run As -> Run on server using tomcat.

After running,

Hit http://localhost:port_number/mvc/getMessage.mvc on your local browser and you will see the following output:


And to get the view, hit http://localhost:port_number/mvc/getHelloWorld.mvc and you will see following output:


This is all about how to create spring mvc program in eclipse.


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