BL.Servlets.AddNode.java Source code

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/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package BL.Servlets;

import static BL.myLib.keyin;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import static java.lang.System.out;
import java.util.List;
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 org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.input.SAXBuilder;

/**
 *
 * @author Samuel
 */
@WebServlet(name = "Users", urlPatterns = { "/Users" })
public class AddNode extends HttpServlet {

    /**
     * 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");
        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 AddUser</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet AddUser at " + request.getContextPath() + "</h1>");
            String NodeType = "residentialProperties";
            Boolean isFound = false;
            try {
                String note_id = keyin("Please Enter note id you need to search: ");
                SAXBuilder saxBuilder = new SAXBuilder();
                String xmlFile = "src\\database.xml";
                Document xmlDoc = saxBuilder.build(new File(xmlFile));
                Element rootElement = xmlDoc.getRootElement();
                //
                List<Element> ListNodeType = rootElement.getChildren(NodeType);
                //
                List<Element> lstNotes = rootElement.getChildren();
                for (int i = 0; i < lstNotes.size(); i++) {
                    Element note = (Element) lstNotes.get(i);
                    String n_id = note.getAttributeValue("id");
                    System.out.println("Note id: " + n_id);
                    if (note_id.equalsIgnoreCase(n_id)) {
                        isFound = true;
                        String name = note.getChildText("name");
                        String value = note.getAttributeValue("value");
                        System.out.println(
                                "We found a note with id " + note_id + "; name: " + name + "Value: " + value);
                        break;
                    }

                }
                if (!isFound) {
                    System.out.println("Sorry, we don't find out any note with id: " + note_id);
                }
                System.out.println("Finished search!");
            } catch (Exception e) {
                // TODO: handle exception
            }
            out.println("</body>");
            out.println("</html>");
        } 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>

}