quick-search.html Front end to travel site
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!--
Front end to travel servlet.
Taken from Core Web Programming Java 2 Edition
from Prentice Hall and Sun Microsystems Press,
.
May be freely used or adapted.
-->
<HTML>
<HEAD>
<TITLE>Online Travel Quick Search</TITLE>
<LINK REL=STYLESHEET
HREF="travel-styles.css"
TYPE="text/css">
</HEAD>
<BODY>
<BR>
<H1>Online Travel Quick Search</H1>
<FORM ACTION="/servlet/cwp.Travel" METHOD="POST">
<CENTER>
Email address: <INPUT TYPE="TEXT" NAME="emailAddress"><BR>
Password: <INPUT TYPE="PASSWORD" NAME="password" SIZE=10><BR>
Origin: <INPUT TYPE="TEXT" NAME="origin"><BR>
Destination: <INPUT TYPE="TEXT" NAME="destination"><BR>
Start date (MM/DD/YY):
<INPUT TYPE="TEXT" NAME="startDate" SIZE=8><BR>
End date (MM/DD/YY):
<INPUT TYPE="TEXT" NAME="endDate" SIZE=8><BR>
<P>
<TABLE CELLSPACING=1>
<TR>
<TH> <IMG SRC="airplane.gif" WIDTH=100 HEIGHT=29
ALIGN="TOP" ALT="Book Flight">
<TH> <IMG SRC="car.gif" WIDTH=100 HEIGHT=31
ALIGN="MIDDLE" ALT="Rent Car">
<TH> <IMG SRC="bed.gif" WIDTH=100 HEIGHT=85
ALIGN="MIDDLE" ALT="Find Hotel">
<TH> <IMG SRC="passport.gif" WIDTH=71 HEIGHT=100
ALIGN="MIDDLE" ALT="Edit Account">
<TR>
<TH><SMALL>
<INPUT TYPE="SUBMIT" NAME="flights" VALUE="Book Flight">
</SMALL>
<TH><SMALL>
<INPUT TYPE="SUBMIT" NAME="cars" VALUE="Rent Car">
</SMALL>
<TH><SMALL>
<INPUT TYPE="SUBMIT" NAME="hotels" VALUE="Find Hotel">
</SMALL>
<TH><SMALL>
<INPUT TYPE="SUBMIT" NAME="account" VALUE="Edit Account">
</SMALL>
</TABLE>
</CENTER>
</FORM>
<BR>
<P ALIGN="CENTER">
<B>Not yet a member? Get a free account
<A HREF="accounts.jsp">here</A>.</B></P>
</BODY>
</HTML>
Travel.java Servlet used by travel site. Uses the MVC architecture in that servlet just does computation; all presentation done by JSP. Uses the TravelCustomer bean.
package cwp;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
/** Top-level travel-processing servlet. This servlet sets up
* the customer data as a bean, then forwards the request
* to the airline booking page, the rental car reservation
* page, the hotel page, the existing account modification
* page, or the new account page.
* <P>
* Taken from Core Web Programming Java 2 Edition
* from Prentice Hall and Sun Microsystems Press,
* .
* May be freely used or adapted.
*/
public class Travel extends HttpServlet {
private TravelCustomer[] travelData;
public void init() {
travelData = TravelData.getTravelData();
}
/** Since password is being sent, use POST only. However,
* the use of POST means that you cannot forward
* the request to a static HTML page, since the forwarded
* request uses the same request method as the original
* one, and static pages cannot handle POST. Solution:
* have the "static" page be a JSP file that contains
* HTML only. That's what accounts.jsp is. The other
* JSP files really need to be dynamically generated,
* since they make use of the customer data.
*/
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
String emailAddress = request.getParameter("emailAddress");
String password = request.getParameter("password");
TravelCustomer customer =
TravelCustomer.findCustomer(emailAddress, travelData);
if ((customer == null) || (password == null) ||
(!password.equals(customer.getPassword()))) {
gotoPage("/travel/accounts.jsp", request, response);
}
// The methods that use the following parameters will
// check for missing or malformed values.
customer.setStartDate(request.getParameter("startDate"));
customer.setEndDate(request.getParameter("endDate"));
customer.setOrigin(request.getParameter("origin"));
customer.setDestination(request.getParameter
("destination"));
HttpSession session = request.getSession(true);
session.setAttribute("customer", customer);
if (request.getParameter("flights") != null) {
gotoPage("/travel/BookFlights.jsp",
request, response);
} else if (request.getParameter("cars") != null) {
gotoPage("/travel/RentCars.jsp",
request, response);
} else if (request.getParameter("hotels") != null) {
gotoPage("/travel/FindHotels.jsp",
request, response);
} else if (request.getParameter("cars") != null) {
gotoPage("/travel/EditAccounts.jsp",
request, response);
} else {
gotoPage("/travel/IllegalRequest.jsp",
request, response);
}
}
private void gotoPage(String address,
HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
RequestDispatcher dispatcher =
getServletContext().getRequestDispatcher(address);
dispatcher.forward(request, response);
}
}
TravelCustomer Bean
package cwp;
import java.util.*;
import java.text.*;
/** Describes a travel services customer. Implemented
* as a bean with some methods that return data in HTML
* format, suitable for access from JSP.
* <P>
* Taken from Core Web Programming Java 2 Edition
* from Prentice Hall and Sun Microsystems Press,
* .
* May be freely used or adapted.
*/
public class TravelCustomer {
private String emailAddress, password, firstName, lastName;
private String creditCardName, creditCardNumber;
private String phoneNumber, homeAddress;
private String startDate, endDate;
private String origin, destination;
private FrequentFlyerInfo[] frequentFlyerData;
private RentalCarInfo[] rentalCarData;
private HotelInfo[] hotelData;
public TravelCustomer(String emailAddress,
String password,
String firstName,
String lastName,
String creditCardName,
String creditCardNumber,
String phoneNumber,
String homeAddress,
FrequentFlyerInfo[] frequentFlyerData,
RentalCarInfo[] rentalCarData,
HotelInfo[] hotelData) {
setEmailAddress(emailAddress);
setPassword(password);
setFirstName(firstName);
setLastName(lastName);
setCreditCardName(creditCardName);
setCreditCardNumber(creditCardNumber);
setPhoneNumber(phoneNumber);
setHomeAddress(homeAddress);
setStartDate(startDate);
setEndDate(endDate);
setFrequentFlyerData(frequentFlyerData);
setRentalCarData(rentalCarData);
setHotelData(hotelData);
}
public String getEmailAddress() {
return(emailAddress);
}
public void setEmailAddress(String emailAddress) {
this.emailAddress = emailAddress;
}
public String getPassword() {
return(password);
}
public void setPassword(String password) {
this.password = password;
}
public String getFirstName() {
return(firstName);
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return(lastName);
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getFullName() {
return(getFirstName() + " " + getLastName());
}
public String getCreditCardName() {
return(creditCardName);
}
public void setCreditCardName(String creditCardName) {
this.creditCardName = creditCardName;
}
public String getCreditCardNumber() {
return(creditCardNumber);
}
public void setCreditCardNumber(String creditCardNumber) {
this.creditCardNumber = creditCardNumber;
}
public String getCreditCard() {
String cardName = getCreditCardName();
String cardNum = getCreditCardNumber();
cardNum = cardNum.substring(cardNum.length() - 4);
return(cardName + " (XXXX-XXXX-XXXX-" + cardNum + ")");
}
public String getPhoneNumber() {
return(phoneNumber);
}
public void setPhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}
public String getHomeAddress() {
return(homeAddress);
}
public void setHomeAddress(String homeAddress) {
this.homeAddress = homeAddress;
}
public String getStartDate() {
return(startDate);
}
public void setStartDate(String startDate) {
this.startDate = startDate;
}
public String getEndDate() {
return(endDate);
}
public void setEndDate(String endDate) {
this.endDate = endDate;
}
public String getOrigin() {
return(origin);
}
public void setOrigin(String origin) {
this.origin = origin;
}
public String getDestination() {
return(destination);
}
public void setDestination(String destination) {
this.destination = destination;
}
public FrequentFlyerInfo[] getFrequentFlyerData() {
return(frequentFlyerData);
}
public void setFrequentFlyerData(FrequentFlyerInfo[]
frequentFlyerData) {
this.frequentFlyerData = frequentFlyerData;
}
public String getFrequentFlyerTable() {
FrequentFlyerInfo[] frequentFlyerData =
getFrequentFlyerData();
if (frequentFlyerData.length == 0) {
return("<I>No frequent flyer data recorded.</I>");
} else {
String table =
"<TABLE>\n" +
" <TR><TH>Airline<TH>Frequent Flyer Number\n";
for(int i=0; i<frequentFlyerData.length; i++) {
FrequentFlyerInfo info = frequentFlyerData[i];
table = table +
"<TR ALIGN=\"CENTER\">" +
"<TD>" + info.getAirlineName() +
"<TD>" + info.getFrequentFlyerNumber() + "\n";
}
table = table + "</TABLE>\n";
return(table);
}
}
public RentalCarInfo[] getRentalCarData() {
return(rentalCarData);
}
public void setRentalCarData(RentalCarInfo[] rentalCarData) {
this.rentalCarData = rentalCarData;
}
public HotelInfo[] getHotelData() {
return(hotelData);
}
public void setHotelData(HotelInfo[] hotelData) {
this.hotelData = hotelData;
}
// This would be replaced by a database lookup
// in a real application.
public String getFlights() {
String flightOrigin =
replaceIfMissing(getOrigin(), "Nowhere");
String flightDestination =
replaceIfMissing(getDestination(), "Nowhere");
Date today = new Date();
DateFormat formatter =
DateFormat.getDateInstance(DateFormat.MEDIUM);
String dateString = formatter.format(today);
String flightStartDate =
replaceIfMissing(getStartDate(), dateString);
String flightEndDate =
replaceIfMissing(getEndDate(), dateString);
String [][] flights =
{ { "Java Airways", "1522", "455.95", "Java, Indonesia",
"Sun Microsystems", "9:00", "3:15" },
{ "Servlet Express", "2622", "505.95", "New Atlanta",
"New Atlanta", "9:30", "4:15" },
{ "Geek Airlines", "3.14159", "675.00", "JHU",
"MIT", "10:02:37", "2:22:19" } };
String flightString = "";
for(int i=0; i<flights.length; i++) {
String[] flightInfo = flights[i];
flightString =
flightString + getFlightDescription(flightInfo[0],
flightInfo[1],
flightInfo[2],
flightInfo[3],
flightInfo[4],
flightInfo[5],
flightInfo[6],
flightOrigin,
flightDestination,
flightStartDate,
flightEndDate);
}
return(flightString);
}
private String getFlightDescription(String airline,
String flightNum,
String price,
String stop1,
String stop2,
String time1,
String time2,
String flightOrigin,
String flightDestination,
String flightStartDate,
String flightEndDate) {
String flight =
"<P><BR>\n" +
"<TABLE WIDTH=\"100%\"><TR><TH CLASS=\"COLORED\">\n" +
"<B>" + airline + " Flight " + flightNum +
" ($" + price + ")</B></TABLE><BR>\n" +
"<B>Outgoing:</B> Leaves " + flightOrigin +
" at " + time1 + " AM on " + flightStartDate +
", arriving in " + flightDestination +
" at " + time2 + " PM (1 stop -- " + stop1 + ").\n" +
"<BR>\n" +
"<B>Return:</B> Leaves " + flightDestination +
" at " + time1 + " AM on " + flightEndDate +
", arriving in " + flightOrigin +
" at " + time2 + " PM (1 stop -- " + stop2 + ").\n";
return(flight);
}
private String replaceIfMissing(String value,
String defaultValue) {
if ((value != null) && (value.length() > 0)) {
return(value);
} else {
return(defaultValue);
}
}
public static TravelCustomer findCustomer
(String emailAddress,
TravelCustomer[] customers) {
if (emailAddress == null) {
return(null);
}
for(int i=0; i<customers.length; i++) {
String custEmail = customers[i].getEmailAddress();
if (emailAddress.equalsIgnoreCase(custEmail)) {
return(customers[i]);
}
}
return(null);
}
}
BookFlights.jsp, RentCars.jsp, FindHotels.jsp, EditAccounts.jsp, and IllegalRequest.jsp Pages used by the Travel servlet to do its presentation.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!--
Flight-finding page for travel example.
Taken from Core Web Programming Java 2 Edition
from Prentice Hall and Sun Microsystems Press,
.
May be freely used or adapted.
-->
<HTML>
<HEAD>
<TITLE>Best Available Flights</TITLE>
<LINK REL=STYLESHEET
HREF="/travel/travel-styles.css"
TYPE="text/css">
</HEAD>
<BODY>
<H1>Best Available Flights</H1>
<CENTER>
<jsp:useBean id="customer"
class="cwp.TravelCustomer"
scope="session" />
Finding flights for
<jsp:getProperty name="customer" property="fullName" />
<P>
<jsp:getProperty name="customer" property="flights" />
<P><BR><HR><BR>
<FORM ACTION="/servlet/BookFlight">
<jsp:getProperty name="customer"
property="frequentFlyerTable" />
<P>
<B>Credit Card:</B>
<jsp:getProperty name="customer" property="creditCard" />
<P>
<INPUT TYPE="SUBMIT" NAME="holdButton" VALUE="Hold for 24 Hrs">
<P>
<INPUT TYPE="SUBMIT" NAME="bookItButton" VALUE="Book It!">
</FORM>
</CENTER>
</BODY>
</HTML>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!--
Car rental page not implemented -- see airline booking page.
Taken from Core Web Programming Java 2 Edition
from Prentice Hall and Sun Microsystems Press,
.
May be freely used or adapted.
-->
<HTML>
<HEAD>
<TITLE>Not Implemented</TITLE>
<LINK REL=STYLESHEET
HREF="/travel/travel-styles.css"
TYPE="text/css">
</HEAD>
<BODY>
<H1>Car Rental Page Not Implemented</H1>
<CENTER>
Hey, this is only an example. See the airline booking page.
</CENTER>
</BODY>
</HTML>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!--
Hotel page not implemented -- see airline booking page.
Taken from Core Web Programming Java 2 Edition
from Prentice Hall and Sun Microsystems Press,
.
May be freely used or adapted.
-->
<HTML>
<HEAD>
<TITLE>Not Implemented</TITLE>
<LINK REL=STYLESHEET
HREF="/travel/travel-styles.css"
TYPE="text/css">
</HEAD>
<BODY>
<H1>Hotel Page Not Implemented</H1>
<CENTER>
Hey, this is only an example. See the airline booking page.
</CENTER>
</BODY>
</HTML>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!--
Account page not implemented -- see airline booking page.
Taken from Core Web Programming Java 2 Edition
from Prentice Hall and Sun Microsystems Press,
.
May be freely used or adapted.
-->
<HTML>
<HEAD>
<TITLE>Not Implemented</TITLE>
<LINK REL=STYLESHEET
HREF="/travel/travel-styles.css"
TYPE="text/css">
</HEAD>
<BODY>
<H1>Accounts Page Not Implemented</H1>
<CENTER>
Hey, this is only an example. See the airline booking page.
</CENTER>
</BODY>
</HTML>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!--
Illegal request at Travel Quick Search page.
Taken from Core Web Programming Java 2 Edition
from Prentice Hall and Sun Microsystems Press,
.
May be freely used or adapted.
-->
<HTML>
<HEAD>
<TITLE>Illegal Request</TITLE>
<LINK REL=STYLESHEET
HREF="/travel/travel-styles.css"
TYPE="text/css">
</HEAD>
<BODY>
<H1>Illegal Request</H1>
<CENTER>Please try again.</CENTER>
</BODY>
</HTML>
