This is a simple Model View Controller (MVC) example:
- Controller: Servlet controller. Let the controller servlet listen on a specific url-pattern of interest in web.xml, and forward the request to the JSP page of interest using RequestDispatcher.
- Model: A simple java class
- View: An JSP view
(1) Servlet Controller:
public class ExampleServlet extends HttpServlet {
public void doPost( HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
// The exampleObject will be passed back (as an attribute) to the JSP view
// The attribute will be a name/value pair, the value in this case will be a List object
request.setAttribute("exampleParameter", exampleObject);
// Forward the request to the JSP page of interest using RequestDispatcher.
request.getRequestDispatcher("/WEB-INF/example.jsp").forward(request, response);
}
}
(2) Model
public class ModelExample {
public Object getExampleObject(String key) {
...
return exampleObject
}
}
(3) JSP view (example.jsp)
<%@ page import="java...." %>
<html>
<body>
<%
Object exampleObject = (Object) request.getAttribute("exampleParameter");
...
%>
</body>
</html>
References:
http://www.datadisk.co.uk/html_docs/jsp/jsp_mvc_tutorial.htm
http://stackoverflow.com/questions/2575471/how-to-develop-jsp-servlets-web-app-using-mvc-pattern
