MVC using Abstract Controller Class
------------------------------------------

-------------------------------
Create controller Class HelloController
-------------------------------------------------
package com.controller;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;
import org.springframework.web.servlet.mvc.Controller;
import org.w3c.dom.views.AbstractView;

public class HelloController extends AbstractController {

/*@Override
public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
String name = request.getParameter("name");
Map m = new HashMap();
m.put("msg", "hello...." + name);
ModelAndView mav = new ModelAndView("success", m);
return mav;
}*/

@Override
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response)
throws Exception {
String name = request.getParameter("name");
Map m = new HashMap();
m.put("msg", "hello...." + name);
ModelAndView mav = new ModelAndView("success", m);
return mav;
}

}
----------------------------
create HelloworldServlet.xml
----------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
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-2.0.xsd">

<bean
class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />


<!-- DEFAULT hANDLER MAPPING -->
<bean name="/hello.ds" class="com.controller.HelloController" />
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/" />
<property name="suffix" value=".jsp" />
</bean>

</beans>
----------------------------------------------
modify web.xml file
--------------------------------------------

<?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" id="WebApp_ID" version="3.0">
  <display-name>Spring_MVC_AbstractControllerClass</display-name>
  <welcome-file-list>

    <welcome-file>Index.jsp</welcome-file>

  </welcome-file-list>

<!-- Default -->
<servlet>
<servlet-name>HelloWorld</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

</servlet>

<!-- Map all requests to the DispatcherServlet for handling -->
<servlet-mapping>
<servlet-name>HelloWorld</servlet-name>
<url-pattern>*.ds</url-pattern>
</servlet-mapping>

</web-app>
-------------------------------------
Create index.jsp file
----------------------------------------
<%@ 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>Insert title here</title>
</head>
<body>
<h1> Hello World </h1>
<Form action="./hello.ds">
Name:<input type="text" name="name"/>
<input type="submit" value="sayHello"/>

</Form>
</body>
</html>
-------------------------------------------------
Create Success.jsp file
---------------------------------
<%@ 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>Insert title here</title>
</head>
<body>
<h1> ${msg}</h1>
You are welcome
</body>
</html>
--------------------------

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