Mostrar la informacion de un servlet en un jsp
Publicado por cristhianp (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 :
les agradesco la ayuda :)
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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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