prod/net/jaekl/frank/ViewSchedule.java

   1 package net.jaekl.frank;
   2
   3 import java.io.FileInputStream;
   4 import java.io.IOException;
   5 import java.io.PrintWriter;
   6 import java.util.Locale;
   7
   8 import javax.servlet.ServletException;
   9 import javax.servlet.http.HttpServlet;
  10 import javax.servlet.http.HttpServletRequest;
  11 import javax.servlet.http.HttpServletResponse;
  12
  13 import net.jaekl.frank.octranspo.Server;
  14 import net.jaekl.frank.octranspo.StopInfo;
  15 import net.jaekl.qd.util.ExceptionUtils;
  16
  17 public class ViewSchedule extends HttpServlet {
  18         private static final long serialVersionUID = 1L;
  19
  20         static final String BUNDLE_NAME = "frank";
  21         static final String STOP = "stop";
  22         static final String ROUTE = "route";
  23         static final String LANG = "lang";
  24         static final String UTF_8 = "UTF-8";
  25
  26         ErrorHandler m_errorHandler;
  27
  28         public ViewSchedule() {
  29                 m_errorHandler = new ErrorHandler();
  30         }
  31
  32         int getParamInt(HttpServletRequest req, String paramName) {
  33                 String valueStr = getParamString(req, paramName);
  34                 try {
  35                         return Integer.parseInt(valueStr);
  36                 }
  37                 catch (NumberFormatException exc) {
  38                         // TODO:  Error page
  39                         return 0;
  40                 }
  41         }
  42
  43         String getParamString(HttpServletRequest req, String paramName) {
  44                 String valueStr = req.getParameter(paramName);
  45                 if (null == valueStr|| valueStr.equals("")) {
  46                         // TODO:  Error page
  47                         return null;
  48                 }
  49                 return valueStr;
  50         }
  51
  52         Locale getLocale(HttpServletRequest req) {
  53                 Locale result = null;
  54                 String lang = getParamString(req, LANG);
  55                 if (null != lang) {
  56                         result = new Locale(lang);
  57                 }
  58                 if (null == result) {
  59                         result = Locale.getDefault();
  60                 }
  61                 return result;
  62         }
  63
  64         @Override
  65         public void doGet(HttpServletRequest req, HttpServletResponse res)
  66         throws ServletException, IOException
  67         {
  68                 res.setContentType("text/html");
  69                 res.setCharacterEncoding("utf8");       // Seems to be necessary when running in Japanese
  70                 PrintWriter pw = res.getWriter();
  71
  72                 Locale locale = getLocale(req);
  73                 int stop = getParamInt(req, STOP);
  74                 int route = getParamInt(req, ROUTE);
  75
  76                 try {
  77                         FileInputStream fis = new FileInputStream("apikey.txt");
  78                         try {
  79                                 Server server = new Server("192f31d2", fis);
  80                                 StopInfo stopInfo = null;
  81
  82                                 if (0 == route) {
  83                                         stopInfo = server.getNextTripsForStopAllRoutes(stop);
  84                                 }
  85                                 else {
  86                                         stopInfo = server.getNextTripsForStop(stop, route);
  87                                 }
  88                                 Schedule schedule = new Schedule(locale);
  89
  90                                 schedule.writePage(pw, stopInfo);
  91                         }
  92                         finally {
  93                                 ExceptionUtils.tryClose(fis);
  94                         }
  95                 }
  96                 catch (Throwable t) {
  97                         m_errorHandler.writeErrorPage(pw, t, locale);
  98                 }
  99         }
 100 }