registrationservlet.java

simple mvc model of j2ee

package coreservlets;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

/** Reads firstName and lastName request parameters and forwards
 *  to JSP page to display them. Uses session-based bean sharing
 *  to remember previous values.
 *  <P>
 *  From <a href="http://courses.coreservlets.com/Course-Materials/">the
 *  coreservlets.com tutorials on servlets, JSP, Struts, JSF, Ajax, GWT, and Java</a>.
 */


public class RegistrationServlet extends HttpServlet {
  @Override
  public void doGet(HttpServletRequest request,
                    HttpServletResponse response)
      throws ServletException, IOException {
    HttpSession session = request.getSession();
    synchronized(session) {
     NameBean nameBean = 
        (NameBean)session.getAttribute("name");   
    	// NameBean nameBean =new NameBean();
      if (nameBean == null) {
    	  nameBean = new NameBean();       
        session.setAttribute("name", nameBean);
      }
      nameBean.setFirstName(request.getParameter("firstName"));
      nameBean.setLastName(request.getParameter("lastName"));
      String address = "/WEB-INF/mvc-sharing/ShowName.jsp";
     
      RequestDispatcher dispatcher =
        request.getRequestDispatcher(address);
      dispatcher.forward(request, response);
    }
  }
}