Question

With the below page, I’m expecting to see my message This page requires... but all I’m seeing is a blank page (no errors).

package guest;

import java.io.IOException;
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;

@WebServlet(urlPatterns = {"/guestExport"})
public class GuestExportServlet extends HttpServlet {

    //Injected DAO EJB
    @EJB GuestDao guestDao;

    @Override
    protected void doGet(
        HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        System.out.println("This page requires a POST");
    }

    @Override
    protected void doPost(
        HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        System.out.println("This page is a POST");
    }
}

Any obvious problems here?

Answer 1

Obvious problem: System.out writes to the local console, not the web page you want to display. Everything you want to deliver to the requesting client has to be written to the HttpServletResponse object.