Changing Theme – Java and Spring Examples http://localhost/wordpress Sat, 01 Jun 2019 14:53:50 +0000 fr-FR hourly 1 https://wordpress.org/?v=5.0.4 Example Spring 4 MVC – Changing Theme http://localhost/wordpress/2019/03/19/example-spring-4-mvc-changing-theme/ Tue, 19 Mar 2019 17:41:29 +0000 http://localhost/wordpress/?p=550 This example presents the basic concept of using in Spring the changing theme.

The technologies used are :

    – Spring 4.3.18
    – JDK 1.80
    – Maven 3.3.9

You can convert this example to an Eclipse IDE project by going to folder where is the pom.xml is, and use the command :

mvn eclipse:eclipse

Inspired from « Beginning Spring » Mert Caliskan, Kenan Sevindik, Rod Johnson (Foreword by), Jürgen Höller (Foreword by).

package javaspringexamples.spring.changingtheme.controller;

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

/**
 * 
 * @author mounir.sahrani@gmail.com
 *
 */
@Controller
public class welcomeController {

    @RequestMapping(value = "/welcome")
    public ModelAndView user() {
        return new ModelAndView("welcome");
    }
}

style=css/white.css

style=css/yellow.css

body {
    background-color: white;
    color: black;
}

body {
    background-color: yellow;
    color: green;
}

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
	  http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
	version="3.1">

	<servlet>
		<servlet-name>springmvc</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<load-on-startup>1</load-on-startup>
	</servlet>

	<servlet-mapping>
		<servlet-name>springmvc</servlet-name>
		<url-pattern>*.mvc</url-pattern>
	</servlet-mapping>

</web-app>

<?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:context="http://www.springframework.org/schema/context"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
       					   http://www.springframework.org/schema/beans/spring-beans-4.0.xsd 
       					   http://www.springframework.org/schema/context
       					   http://www.springframework.org/schema/context/spring-context-4.0.xsd
       					   http://www.springframework.org/schema/mvc 
       					   http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

	<context:component-scan
		base-package="javaspringexamples.spring.changingtheme" />
	<context:annotation-config />
	<mvc:annotation-driven />

	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/pages/" />
		<property name="suffix" value=".jsp" />
	</bean>

	<bean id="themeSource"
		class="org.springframework.ui.context.support.ResourceBundleThemeSource" />

	<bean id="themeResolver"
		class="org.springframework.web.servlet.theme.SessionThemeResolver">
		<property name="defaultThemeName" value="yellow" />
	</bean>

	<mvc:interceptors>
		<bean id="themeChangeInterceptor"
			class="org.springframework.web.servlet.theme.ThemeChangeInterceptor">
			<property name="paramName" value="theme" />
		</bean>
	</mvc:interceptors>

</beans>

<%
	response.sendRedirect("welcome.mvc");
%>

<%@ page contentType="text/html;charset=ISO-8859-9"%>
<%@taglib uri="http://www.springframework.org/tags/form" prefix="mvc"%>
<%@taglib uri="http://www.springframework.org/tags" prefix="spring"%>
<html>
<head>
<title>JavaSpringExamples.io - Spring MVC Changing Theme</title>
<link rel="stylesheet" href="<spring:theme code="style"/>"
	type="text/css" />
</head>
<body>
	Theme :
	<a href="?theme=white">White theme</a> -
	<a href="?theme=yellow">Yellow theme</a>
	<br />
	<h1>JavaSpringExamples.io - Changing theme</h1>
</body>
</html>

Get the sources of the example from the following GitHub url

Or Download a .zip file

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