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Monday, October 14, 2013
Tuesday, September 17, 2013
Spring 3 MVC (RESTful) Hello World Example
pom.xml
add these dependencies to your maven project (dynamic web application which converted to a maven project).
<dependencies>
<!-- Spring MVC depends on spring-core, spring-beans, spring-context, spring-web -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
web.xml
<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- <init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/appServlet/dashboardservlet-context.xml</param-value>
</init-param> -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
dispatcher-servlet.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
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-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">
<context:component-scan base-package="com.iitWebApp.framework.web.controller" />
<!-- the mvc resources tag does the magic -->
<mvc:resources mapping="/resources/**" location="/resources/" />
<mvc:annotation-driven />
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/pages/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
TestController.java
@Controller
public class TestController {
@RequestMapping(value = "/", method = RequestMethod.GET)
public final ModelAndView TestControllerMethod() {
ModelAndView HomeModelView = new ModelAndView("Welcome");
HomeModelView.addObject("welcomeMessage", "Welcome");
return HomeModelView;
}
Welcome.jsp
<html>
<head></head>
<body>
<h1>Spring 3 MVC REST web service</h1>
<h3> ${welcomeMessage}</h3>
</body>
</html>
Cheers!! :) :)
add these dependencies to your maven project (dynamic web application which converted to a maven project).
<dependencies>
<!-- Spring MVC depends on spring-core, spring-beans, spring-context, spring-web -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
web.xml
<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- <init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/appServlet/dashboardservlet-context.xml</param-value>
</init-param> -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
dispatcher-servlet.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
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-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">
<context:component-scan base-package="com.iitWebApp.framework.web.controller" />
<!-- the mvc resources tag does the magic -->
<mvc:resources mapping="/resources/**" location="/resources/" />
<mvc:annotation-driven />
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/pages/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
TestController.java
@Controller
public class TestController {
@RequestMapping(value = "/", method = RequestMethod.GET)
public final ModelAndView TestControllerMethod() {
ModelAndView HomeModelView = new ModelAndView("Welcome");
HomeModelView.addObject("welcomeMessage", "Welcome");
return HomeModelView;
}
Welcome.jsp
<html>
<head></head>
<body>
<h1>Spring 3 MVC REST web service</h1>
<h3> ${welcomeMessage}</h3>
</body>
</html>
Cheers!! :) :)
An architectural overview of Spring Web MVC
Model-View-Controller (MVC) pattern
Spring Web MVC Architecture
image courtesy : spring in practice (Willie Wheeler)
Spring Web MVC Architecture
image courtesy : spring in practice (Willie Wheeler)
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