JSP / Servet (2)Bayu Priyambadha, S.Kom

MVC (Model View Controller) Model (data logic)

Java Class (standard class, servlet, JavaBeans, or other classes that use JEE API)

JSP Data access component, JDBC or EJB

View JSP

Controller Servlet

Controller The controller acts as a layer of business logic The Controller will be implement function forward and include Using :

RequestDispatcher dispatcher Example :RequestDispatcher dispatcher = request.getRequestDispatcher("hasil.jsp");dispatcher.forward(request, response);

Controller can send any data by using :request.setAttribute(“name”,”value”);

View View implemented using JSP View present the presentation layer Can be used as interface template View can get data that sent by Controller using :request.getAttribute(“name")

Model The Model is present as the layer of data model Can use usual java class, Java Beans, servlet or even JSP

page Example : Class person{String name;String addr;

}

Set Servlet as Default Page<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <servlet> <servlet-name>myServlet</servlet-name> <servlet-class>myServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>myServlet</servlet-name> <url-pattern>/myServlet</url-pattern> </servlet-mapping> <session-config> <session-timeout> 30 </session-timeout> </session-config> <welcome-file-list> <welcome-file>myServlet</welcome-file> </welcome-file-list></web-app>