Android Open Source - spotthestation Registration Servlet

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Back to project page spotthestation.
License

The source code is released under:
Apache License
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Java Source Code

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor./*from w  ww  .  ja  v a2  s.  co  m*/
 */
package Servlets;

import Entities.NASARegistrationTable;
import Utilities.ZoneCalculator;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.Resource;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.transaction.HeuristicMixedException;
import javax.transaction.HeuristicRollbackException;
import javax.transaction.NotSupportedException;
import javax.transaction.RollbackException;
import javax.transaction.SystemException;
import javax.transaction.UserTransaction;

/**
 *
 * @author xxc9071
 */
public class RegistrationServlet extends HttpServlet
{

    @PersistenceContext
    private EntityManager em;
    @Resource
    private UserTransaction transaction;

    /**
     * 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
    {
        try
        {
            // Retrieve values
            String regID = request.getParameter("regID");
            String gpsLocation = request.getParameter("location");
            String[] gpsValues = gpsLocation.split(",");

            // Calculate zone
            double latitude = Double.parseDouble(gpsValues[0]);
            double longitude = Double.parseDouble(gpsValues[1]);
            int zone = ZoneCalculator.calculateZone(longitude, latitude);

            // Persist registration
            transaction.begin();
            NASARegistrationTable nrt = new NASARegistrationTable(regID);
            nrt.setZone(zone);

            System.out.println("nrt: " + nrt + ", zone: " + nrt.getZone());

            em.persist(nrt);

            transaction.commit();
        }
        catch (RollbackException ex)
        {
            Logger.getLogger(RegistrationServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
        catch (HeuristicMixedException ex)
        {
            Logger.getLogger(RegistrationServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
        catch (HeuristicRollbackException ex)
        {
            Logger.getLogger(RegistrationServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
        catch (SecurityException ex)
        {
            Logger.getLogger(RegistrationServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
        catch (IllegalStateException ex)
        {
            Logger.getLogger(RegistrationServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
        catch (NotSupportedException ex)
        {
            Logger.getLogger(RegistrationServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
        catch (SystemException ex)
        {
            Logger.getLogger(RegistrationServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    // <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>
}
Java Source Code List
