Se genereaza un numar aleator intre 0 - 10 (inclusiv) care se posteaza intr-un cookie. Utilizatorul introduce numele sau si incepe jocul. Primeste raspunsuri in legatura cu raspunsul sau: numarul este mai mare sau mai mic decat cel introdus. La final se afiseaza numarul de incercari facute pentru a ghici numarul.
Codul primei pagini: startGuessGame.jsp
html
<%@page import="javax.servlet.http.Cookie" %>
Introduceti numele dumneavoastra:
html
Codul paginii a doua: guessGame.jsp
html
<%@page import="javax.servlet.http.Cookie" %>
Bine ai venit, <%if(request.getAttribute("playerName") != null){
out.print(request.getAttribute("playerName")); } %> !
Introduceti in textfield un numar intre 0 - 10!
<%
if(request.getAttribute("eroare") != null){
out.print(request.getAttribute("eroare"));
}
if(request.getAttribute("mesaj") != null){
out.print(request.getAttribute("mesaj"));
}
%>
html
Codul servletului GuessGame.java
package teste;
import java.io.IOException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Random;
/**
* Servlet implementation class GuessGame
*/
public class GuessGame extends HttpServlet {
private static final long serialVersionUID = 1L;
private static int searchCookie(HttpServletRequest request, String cookieName){
int value = 0;
Cookie[] cookieArray = request.getCookies();
if(cookieArray != null){
for(int i = 0; i < cookieArray.length; i++){
String name = cookieArray[i].getName();
if(name.equals(cookieName)){
//ia valoarea cookie-ului si o pune intr-un String, apoi o transf in int:
String valCookie = cookieArray[i].getValue();
value = Integer.parseInt(valCookie);
}
}
}
return value;
}
/**
* @see HttpServlet#HttpServlet()
*/
public GuessGame() {
super();
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doRequest(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doRequest(request, response);
}
protected void doRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
int guessingNumber = 0;
int number = 0;
int numarIncercari = 0;
String mesaj = "";
String eroare = "";
String aux = "";
String playerName = request.getParameter("playerName");
log("playerName: " + playerName);
Random randomNumber = new Random();
if(playerName != null){
guessingNumber = randomNumber.nextInt(11);
} else {
guessingNumber = searchCookie(request,"guessNumber");
}
Cookie trialNumber = new Cookie("trialNumber", "trialNumber");
Cookie guessNumber = new Cookie("guessNumber", "guessNumber");
String initGuessCookie = Integer.toString(numarIncercari);
trialNumber.setValue(initGuessCookie);
String initNumberCookie = Integer.toString(guessingNumber);
guessNumber.setValue(initNumberCookie);
try{
String nr = request.getParameter("number");
number = Integer.parseInt(nr);
if(number
log("< incercari: " + numarIncercari);
} else if(number>guessingNumber){
numarIncercari++;
log("> incercari: " + numarIncercari);
} else {
numarIncercari++;
log("= incercari: " + numarIncercari);
}
} catch (NumberFormatException nfe) {
eroare = "Eroare! Introduceti un numar valid!";
} finally {
int value = 0;
if(number
value++;
aux = Integer.toString(value);
trialNumber.setValue(aux);
mesaj = "Numarul este mai mic! Mai incearca! Incercari: "+ trialNumber.getValue();
log("Numarul de incercari este: "+ trialNumber.getValue());
} else if (number>guessingNumber){
value = searchCookie(request,"trialNumber");
value++;
aux = Integer.toString(value);
trialNumber.setValue(aux);
mesaj = "Numarul este mai mare! Mai incearca! Incercari: "+ trialNumber.getValue();
log("Numarul de incercari este: "+ trialNumber.getValue());
} else if(number == guessingNumber){
value = searchCookie(request,"trialNumber");
value++;
aux = Integer.toString(value);
trialNumber.setValue(aux);
mesaj = "Ati ghicit numarul! Incercari: "+ trialNumber.getValue();
log("Numarul de incercari este: "+ trialNumber.getValue());
trialNumber.setValue("0");
}
request.setAttribute("mesaj", mesaj);
request.setAttribute("eroare", eroare);
request.setAttribute("playerName", playerName);
response.addCookie(trialNumber);
response.addCookie(guessNumber);
RequestDispatcher dispatcher=getServletContext().getRequestDispatcher( "/teste/guessGame.jsp" );
dispatcher.forward( request, response );
}
}
}
