Jumat, 20 Maret 2009

Spring - bagian 1

Spring MVC : Hello World

Spring Servlet Declaration

Declare Spring DispatcherServlet dan map "*.html" URL, dalam WEB-INF/web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" >

<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>*.html</url-pattern>
</servlet-mapping>

<welcome-file-list>
<welcome-file>
jsp/index.jsp
</welcome-file>
</welcome-file-list>

</web-app>


Spring Servlet Configuration

membuat Spring configuration file pada WEB-INF/springmvc-servlet.xml (nama berdasarkan nama servlet di atas):

<?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-2.5.xsd">

<bean name="/hello_world.html" class="springmvc.web.HelloWorldController"/>

<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>

</beans>

Map URL /hello_world.html ke Controller HelloWorldController

Controller


buat controller HelloWorldController.java

package springmvc.web;

import java.io.IOException;

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

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

public class HelloWorldController implements Controller {

public ModelAndView handleRequest(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {

String aMessage = "Hello World MVC!";

ModelAndView modelAndView = new ModelAndView("hello_world");
modelAndView.addObject("message", aMessage);

return modelAndView;
}
}

Controller ini memanggil tampilan 'hello_world', melalui 'message' (seperti Struts attribute)

View

buat jsp/hello_world.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<body>
<p>This is my message: ${message}</p>
</body>
</html>

Menampilkan message attribute yang telah di-set dalam Controller.

diambil dan di terjemahkan dari :
http://maestric.com/en/doc/java/spring/hello_world

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