Using the SimpleUrlHandlerMapping
Class of Spring WebMVC Framework 4, a simple "Hello World" web application example can be created.
Built and tested with the following:
Set up a new Maven Project with the following details:
Tutorials:
Create a New Maven Project in Eclipse
Configure Run on Server option on a Maven Project on Eclipse IDE
Configure details needed to build the project together with the project information.
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.consistentcoder</groupId>
<artifactId>spring-4-mvc-hello-world-simple-url-handler-mapping</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>spring 4 mvc hello world simple url handler mapping</name>
<dependencies>
<!-- Spring Framework -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.2.2.RELEASE</version>
</dependency>
<!-- Java Servlet API -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
</dependencies>
</project>
/pom.xml
Map all incoming request to the "DispatcherServlet" which will be declared on the "Deployment Descriptor".
<?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_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>spring-4-mvc-hello-world-simple-url-handler-mapping</display-name>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
/src/main/webapp/WEB-INF/web.xml
Find corresponding controller of an incoming request which will create a model that will return the view file.
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
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-4.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd">
<!-- SimpleUrlHandlerMapping -->
<bean id="simpleUrlHandlerMapping"
class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<value>
/=simpleController
</value>
</property>
</bean>
<bean name="simpleController" class="com.consistentcoder.controllers.Main" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/jsp/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
</beans>
/src/main/webapp/WEB-INF/spring-servlet.xml
Create another folder inside "WEB-INF" and name it "jsp". Create a new jsp file inside it and name it "hello.jsp", then put the following code inside it.
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Spring 4 MVC Hello World Simple Url Handler Mapping Example</title>
</head>
<body>
<h1>${ message }</h1>
</body>
</html>
/src/main/webapp/WEB-INF/jsp/hello.jsp
Interpret and transform incoming request into a model. Create a new package and name it "com.consistentcoder.controllers". Create a new class inside it, name the class "Main".
Tutorials:
Create a New Package on Eclipse IDE
Create a New JAVA Class on Eclipse IDE
package com.consistentcoder.controllers;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;
public class Main extends AbstractController {
public ModelAndView handleRequestInternal(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelAndView model = new ModelAndView();
model.addObject("message", "Spring 4 MVC Hello World<br>Simple Url Handler Mapping Example");
model.setViewName("hello");
return model;
}
}
/src/main/java/com/consistentcoder/constrollers/Main.java
Spring 4 MVC Hello World Simple Url Handler Mapping Example has been developed.
Start your server and browse this link. http://localhost:8080/spring-4-mvc-hello-world-simple-url-handler-mapping/
Create a NodeJs Hello World example - https://t.co/7PS2IOu7bF
— Consistent Coder (@ConsistentCoder) Nobyembre 17, 2015