www.pudn.com > WAPpush.zip > Info.java

package info;

import commercials.Commercials;
import members.Members;
import feedback.Feedback;
import javax.servlet.*;
import javax.servlet.http.*;
import java.text.SimpleDateFormat;
import java.sql.*;
import java.io.*;
import java.util.*;

/**
 * Info pages
 *
 */
public final class Info extends HttpServlet {
    
    private static final String XML_VERSION = "";
    private static final String CONTENT_TYPE = "text/vnd.wap.wml";
    private static final String SI_CONTENT_TYPE = "text/vnd.wap.si";
    private static final String DOC_TYPE = "";

    /**
     * Called by the server to allow a servlet to handle a GET request. 
     *
     * @param request a HttpServletRequest value
     * @param response a HttpServletResponse value
     * @exception ServletException if an error occurs
     * @exception IOException if an error occurs
     */
    public void doGet(HttpServletRequest request, HttpServletResponse response) 
	throws ServletException, IOException {
	doPost(request, response);
    }

    /**
     * Called by the server to allow a servlet to handle a POST request.
     *
     * @param request a HttpServletRequest value
     * @param response a HttpServletResponse value
     * @exception ServletException if an error occurs
     * @exception IOException if an error occurs
     */
    public void doPost(HttpServletRequest request, HttpServletResponse response) 
	throws ServletException, IOException {

	/* Session tracking. See the description in index.jsp */
	HttpSession session = request.getSession();
	boolean cookiesCheck = request.getHeader("cookie") != null && request.isRequestedSessionIdValid();
	final String jsessionID = cookiesCheck ? "" : ";jsessionid=" + session.getId();

	String dob = null; String name = null; String sex = null; String email = null; String pushMessages = null;

	/* get user information from the current session object */
	try{
	    name = (String)session.getAttribute("name");
	    dob = (String)session.getAttribute("dob");
	    sex = (String)session.getAttribute("sex");
	    email = (String)session.getAttribute("email");
	    pushMessages = (String)session.getAttribute("pushservices");
	}
	catch (Exception E){
	    E.printStackTrace();
	}

	/* check if WTAI functionality is supported by the client user agent */
	final boolean wtaiSupport = wtaiSupported(request);

	/* Administrator's user name */
	final String ADMIN_USER = "admin";

	/* start generating the response ... */
        response.setContentType(CONTENT_TYPE);
	/* prevent caching of the response */
	response.setHeader("cache-control", "no-cache");
	PrintWriter out = response.getWriter();

	out.println(XML_VERSION);
	out.println(DOC_TYPE);
	out.println("");

	out.println("\n" +
		    "");

	out.println("\n" +
		    "");
	boolean showAdminMenu = name != null && name.equals(ADMIN_USER);

	if (showAdminMenu) {
	    out.println("\n" +
			"\n" + 
			" \n" +
			"\n" +
			"
Admin info" +
			"  \n" +
			"
");
	} 
	String commercial = Commercials.getRandomCommercial();
	out.println(" " +
		    "  " +
		    " " +
		    " " +
		    "  " +
		    " " +
		    " " +
		    "  " +
		    " " +
		    " " +
		    "  " +
		    " " + 
		    " 
" + 
		    (!commercial.equals("") ? "*** " + commercial + "***
" : "") + 
		    "  New" +
		    "   " +
		    "  
" +
		    "  Opening hours" +
		    "   " +
		    "  
" +
		    "  Prices" +
		    "   " +
		    "  
" +
		    "  Contact" +
		    "   " +
		    "  " +
		    " 
" +
		    "");
	out.println("" +
		    "" +
		    " 
Mon-Fri: 10am-8pm
" +
		    "  Sat-Sun: 12am-9pm
" +
		    "");
	out.println("" +
		    "" +
		    " 
Zoo Hill 7, 33101 Zootown
");
	if(wtaiSupport) {
	    out.println("tel. 555-555-555" +
			" " +
			"
");	
	} else {
	    out.println("tel. 555-555-555
");
	}
	out.println(" Feedback" +
		    "   " +
		    " 
" +
		    "");
	out.println("" +
		    " 
Today: Check out our new \"Safari\" family restaurant next to the gate! Exotic cuisine in exotic setting!
" +
		    "  Last week:   Flamingo pond is re-opened after the renovation." +
		    " 
" +
		    "");
	out.println("" +
		    "
Adults: 5 €
" +
		    "Children: 3 €
" +
		    "Pensioners: 3 €
" +
		    "Season pass: 20 €
");
	if (dob != null) {
	    out.println("Member information:
");
	    try {
		int age = ageCalculator(dob);
		if(age < 16) {
		    out.println("Today free entry for children!");
		}
		else if(age < 65) {
		    out.println("Special offer for you  " + name + "!  As a member you will get" + 
				" 2  € reduction out of the normal Adults ticket price.");
		}
		else {
		    out.println("Today free entry for all senior members of the Zoo!");
		}
	    }
	    catch (Exception E) {
		// E.printStackTrace();
	    }
	}
	out.println(" 
"  + 
		    "");
	if (showAdminMenu) { 
	    out.println("" +
			" 
Feedback" +
			"   " +
			"  
" +
			"  Users" +
			"   " +
			"  " +
			"  " +
			"   " +
			"  " +
			"  " +
			"   " +
			"  " +
			" 
" +
			"");
	    out.println("
");
	    out.println(Feedback.viewVotes());
	    out.println("");
	    out.println("" +
			"
" + viewUsers() +
			"");
	}
	out.println("");
    }


    /**
     * viewUsers views the number of users (males and females).
     *
     * @return a String value
     */
    private static String viewUsers() {
	int numberOfUsers = 0;
	double numberOfMales = 0;
	Statement stmt = Members.getStatement();

	try {
	    ResultSet rs = stmt.executeQuery("SELECT sex FROM members");
	    while (rs.next()) {
		++numberOfUsers;
		if (rs.getString("sex").equals("m")) ++numberOfMales;
	    }
	}
	catch (SQLException E){
	    E.printStackTrace();
	}
	if(numberOfUsers == 0)
	    return "No users";
	else
	    return "Users: " + numberOfUsers + "
Male: " + Math.round(numberOfMales / (double)numberOfUsers * 100) + "%" 
		+ "
Female: " + Math.round(((double)numberOfUsers - numberOfMales) / (double)numberOfUsers * 100) + "%";
    }

    /**
     * Calculates the current age on the basis of date of birth (dob) given in format "yyyy.mm.dd"
     *
     * @param dob a String value
     * @return an int value
     */
    public static int ageCalculator(String dob) {
	SimpleDateFormat s = new SimpleDateFormat("yyyy.MM.dd");
	try {
	    java.util.Date d = s.parse(dob);
	    Calendar c = Calendar.getInstance();
	    c.setTime(d);
	    return Calendar.getInstance().get(Calendar.YEAR) - c.get(Calendar.YEAR);
	}
	catch(Exception e) { System.err.println(e); }
	return -1;
    }

    /** 
     *  Check if the client phone supports wtai functionality.
     *  The user-agent header information is utilised.
     */
    private boolean wtaiSupported(HttpServletRequest request) {
	String wtaiSupportFile = getInitParameter("wtaisupport");
	String userAgent = request.getHeader("User-Agent");
	if(userAgent == null) return false;
	userAgent = userAgent.toLowerCase();
	wtaiSupportFile = getServletContext().getRealPath(wtaiSupportFile);
	try {
	    BufferedReader reader = new BufferedReader(new FileReader(wtaiSupportFile));
	    String line;
	    while((line = reader.readLine()) != null) {
		line = line.trim().toLowerCase();
		if(line.equals(""))  break;
		if(userAgent.startsWith(line)) return true;
	    }
	}
	catch (java.io.IOException e) {
	    System.err.println(e);
	}
	return false;
    }
}