/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package edu.ccsu.json;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import javax.annotation.Resource;
import javax.json.JsonArray;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;

/**
 *
 * @author cwilliam
 */
@WebServlet(name = "AjaxJsonFindByNameServlet", urlPatterns = {"/AjaxJsonFindByNameServlet"})
public class AjaxJsonFindByNameServlet extends HttpServlet {

    @Resource(name = "jdbc/Lect8aDB")
    DataSource dataSource;

    /**
     * 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("application/xml;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            String firstNameStart = request.getParameter("firstName");
            if (firstNameStart == null) {
                firstNameStart = "";
            }
            firstNameStart += "%";
            Connection connection = dataSource.getConnection();
            String selectSQL = "select * from person where firstname like ?";
            PreparedStatement selectStatement = connection.prepareStatement(selectSQL);
            selectStatement.setString(1, firstNameStart);
            ResultSet resultSet = selectStatement.executeQuery();
            JsonArray jsonResult = JsonResultSetConverter.convert(resultSet);
            resultSet.close();
            selectStatement.close();
            connection.close();
            out.println(jsonResult.toString());

            // Not required, for lecture purposes only
            request.getServletContext().log(jsonResult.toString());
        } catch (Exception e) {
            request.getServletContext().log(e.getMessage());
        } finally {
            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 {
        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>
}

@@ -1710,17 +1710,35 @@
 %22select 
-*
+firstname, lastname
  from pe

Change select to only select fields needed