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Antiguo 17/07/2012, 18:05
JohnEdiSantDe
 
Fecha de Ingreso: julio-2012
Mensajes: 8
Antigüedad: 12 años, 4 meses
Puntos: 0
Respuesta: Problemas GetJson y JQuery en MVC

El servlet de Departamentos:


/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package controlador;

import datos.dao.DAODepartamento;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
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 PC
*/
@WebServlet(name="Departamentos", urlPatterns={"/Departamentos"})
public class Departamentos extends HttpServlet {
String lista = new String("");

public Departamentos(){
super();
}
/**
* 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, Exception {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
DAODepartamento Consultar = new DAODepartamento();
//acceder al metodo buscaPaises
ArrayList Departamentos = Consultar.buscarDepartamentos();
if (Departamentos.size() != 0) {
lista = "\"" + "Departamentos" + "\":" + "[";
for (int x = 0; x < Departamentos.size(); x=x+2) {
lista += "{" + "\"" + "id" + "\"" + ":" + Departamentos.get(x).toString() + "," +
"\"" + "TNAME" + "\"" + ":" + " \"" + Departamentos.get(x+1) + "\"" + "}" + ",";
//formar la cadena en formato JSON para enviarlo a la vista con jquery
}
//quitar la ultima coma para parsear la cadena JSON
lista = lista.substring(0, lista.length() - 1);
} else {
out.println("No se logro obtener datos");
}
} finally {
out.println("{" + lista + "]}");
System.out.println("{" + lista + "]}");
out.close();
}
}

// <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 {
try {
processRequest(request, response);
} catch (Exception ex) {
Logger.getLogger(Departamentos.class.getName()).lo g(Level.SEVERE, null, ex);
}
}

/**
* 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 {
try {
processRequest(request, response);
} catch (Exception ex) {
Logger.getLogger(Departamentos.class.getName()).lo g(Level.SEVERE, null, ex);
}
}

/**
* Returns a short description of the servlet.
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>

}