Servlets - Mostrar la informacion de un servlet en un jsp

   
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Mostrar la informacion de un servlet en un jsp

Publicado por cristhianp cristh2496@hotmail.es (1 intervención) el 12/04/2016 06:26:58
Buena noche lo que pasa es que tengo un servlet en el cual estoy mostrando y trallendo la informacion de la base de datos ademas de guardandola lo que quiero saber es que ten go que hacer para que dicha informacion se muestre en un jsp o jsf mis servlets son estos :

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package com.empresariales.ejb.servlets;
 
import com.empresariales.ejb.entity.NewEntityE191;
import com.empresariales.ejb.facade.NewEntityE191Facade;
import com.empresariales.ejb.sessionbean.SessionManagerBean;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
/**
 *
 * @author CRISTHIANALBEIRO
 */
@WebServlet(name = "ListNews", urlPatterns = {"/ListNews"})
public class ListNews extends HttpServlet {
    @EJB
    private NewEntityE191Facade newEntityE191Facade;
    @EJB
    private SessionManagerBean sessionManagerBean;
 
 
 
    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        request.getSession(true);
        response.setContentType("text/html;charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {
            /* */
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet ListNews</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet ListNews at " + request.getContextPath() + "</h1>");
 
            List news = newEntityE191Facade.findAll();
 
            for(Iterator it = news.iterator(); it.hasNext();){
            NewEntityE191 elem = (NewEntityE191) it.next();
            out.print("<b>" + elem.getTitle() +"</b><br />"); /*  it.next()"<br /><br />" */
            out.print(elem.getBody() + "<br />");
            }
            out.println("<a href='PostMessage'>Publicar mensaje nuevo</a>");
 
             out.println("<br><br>");
 
             out.println(sessionManagerBean.getActiveSessionCount()+ "usuario(s) leyendo las noticias ");
 
 
            out.println("</body>");
            out.println("</html>");
        }
    }
 
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }
 
    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }
 
    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
 
}
 
 
este es mi otro servlet :
 
package com.empresariales.ejb.servlets;
 
import com.empresariales.ejb.entity.NewEntityE191;
import java.io.IOException;
import java.io.PrintWriter;
import javax.annotation.Resource;
import javax.jms.*;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
 
/**
 *
 * @author CRISTHIANALBEIRO
 */
@WebServlet(name = "PostMessage", urlPatterns = {"/PostMessage"})
public class PostMessage extends HttpServlet {
 
    @Resource(mappedName = "jms/NewMessageFactory")
    private ConnectionFactory connectionFactory;
 
    @Resource(mappedName = "jms/NewMessageBeanE191")
    private Queue queue;
 
 
    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
 
        String title = request.getParameter("title");
        String body = request.getParameter("body");
 
        if((title != null )&&(body != null)){
            try{
                Connection connection = connectionFactory.createConnection();
                Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
                MessageProducer msgProd = session.createProducer(queue);
                ObjectMessage objectmessage = session.createObjectMessage();
                NewEntityE191 newMsg = new NewEntityE191();
                newMsg.setTitle(title);
                newMsg.setBody(body);
                objectmessage.setObject(newMsg);
                msgProd.send(objectmessage);
                msgProd.close();
                connection.close();
                response.sendRedirect("ListNews");
 
            }catch (JMSException ex){
            ex.printStackTrace();
            }
 
            }
 
        try (PrintWriter out = response.getWriter()) {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet PostMessage</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet PostMessage at " + request.getContextPath() + "</h1>");
            out.println("<form>");
            out.println("Titulo: <input type='text' name='title'><br>");
            out.println("Noticia: <textarea name='body'></textarea>");
            out.println("<input type='submit'><br>");
            out.println("</form>");
            out.println("</body>");
            out.println("</html>");
        }
    }
 
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }
 
    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }
 
    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
 
}

les agradesco la ayuda :)
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