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servlet dont redirect to a jsp page

Greenhorn

Posts: 28

posted 3 years ago

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from a jsp redirected page to a servlet, this redirects to another jsp page, but when I click the submit button, the form deletes all data and does not redirect.

The resulting address is:

http://localhost:8080/ClienteWebParking/parquear.do?nombre=ives&tipo=carro&placa=aws-128&horain=10%3A00&horaout=12%3A00&fecha=2018-05-31&Reserva=reserva

this is the index.jsp

this is servlet Parquear

protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String Nombre =request.getParameter("nombre");
       String Tipo = request.getParameter("tipo");
       String Placa = request.getParameter("placa");
       String Fecha= request.getParameter("fecha");
       String Hora_in = request.getParameter("horain");
       String Hora_out= request.getParameter("horaout");
       if(Hora_in !=null && !Hora_in.isEmpty() && Hora_out !=null && !Hora_out.isEmpty()){
       jaxws.Parking_Service service;
       jaxws.Parking port;
       try{
       service= new jaxws.Parking_Service();
       port=service.getParkingPort();
       String parqueo = port.reserva(Hora_in, Hora_out);
       request.setAttribute("result",parqueo);
       
       request.getRequestDispatcher("reserva.jsp").forward(request, response);
       
       }
      catch (NumberFormatException ex)
      {
        System.out.println("numero incorrecto\n");  
      }
      catch (Exception ex)
      {
        System.out.println(ex.getMessage());  
      }
       
       }
    }

I've tried the following options but it does not work:

this is reserva.jsp

on this page you must show the data entered in the form

What should I change so that it can be redirected from the servlet to reserva.jsp?

Paul Clapham

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posted 3 years ago

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Let me point out that it's common for a servlet to forward to a JSP. However you have chosen to redirect instead of forwarding; was that a specific requirement which somebody gave to you? If not, I'd suggest changing the servlet to forward to the JSP after it completes its work.

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Prasad Saya

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posted 3 years ago

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from a jsp redirected page to a servlet, this redirects to another jsp page, but when I click the submit button, the form deletes all data and does not redirect...

So the navigation is: index.jsp -> Parquear servlet -> reserva.jsp

1. The servlet Parquear: can you tell the configuration of the servlet in the web.xml
2. Place a debug statement in Parquear like a log or System.out.println("I am in the Parquear...") and verify the log files/console and see this debug output is appearing.

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Dave Tolls

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posted 3 years ago

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Do you see anything in your logs (for example do either of the messages in the catch blocks appear)?
If not, as Prasad says, add some logging into the servlet so you can at least see where in the code it is going, and what values it is dealing with.

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