men her kommer et skelet til en web baseret løsning
gamelogin.jsp
=============
<%@ page import="test.Game" %>
<%
if(Game.getInstance().isEnough()) {
%>
Beklager ikke flere ledige pladser.
<%
} else {
%>
<form method="post" action="LoginServlet">
Brugernavn: <input type="text" name="username">
<br>
<input type="submit" value="Login">
</form>
<%
}
%>
gamemain.jsp
============
<%@ page import="test.Game,java.util.List" %>
<%
if(Game.getInstance().isEnough()) {
if(session.getAttribute("username").equals(Game.getInstance().playerToMove())) {
%>
<form method="post" action="MoveServlet">
Træk: <input type="text" name="move">
<br>
<input type="submit" value="Træk">
</form>
<%
} else {
%>
<meta http-equiv="refresh" content="5">
Venter på <%=Game.getInstance().playerToMove()%>.
<%
}
%>
<hr>
Træk:<br>
<%
List moves = Game.getInstance().getAllMoves();
for(int i = 0; i < moves.size(); i++) {
%>
<%=(i+1)%> : <%=moves.get(i)%><br>
<%
}
} else {
%>
<meta http-equiv="refresh" content="5">
Venter på flere spillere.
<%
}
%>
web.xml
=======
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="
http://java.sun.com/xml/ns/j2ee" xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="
http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">
<servlet>
<servlet-name>LoginServlet</servlet-name>
<servlet-class>test.LoginServlet</servlet-class>
</servlet>
<servlet>
<servlet-name>MoveServlet</servlet-name>
<servlet-class>test.MoveServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>LoginServlet</servlet-name>
<url-pattern>/LoginServlet</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>MoveServlet</servlet-name>
<url-pattern>/MoveServlet</url-pattern>
</servlet-mapping>
</web-app>
LoginServlet.java
=================
package test;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class LoginServlet extends HttpServlet {
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Game.getInstance().addPlayer(request.getParameter("username"));
request.getSession(true).setAttribute("username", request.getParameter("username"));
response.sendRedirect("gamemain.jsp");
}
}
MoveServlet.java
================
package test;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class MoveServlet extends HttpServlet {
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Game.getInstance().doMove(request.getParameter("move"));
response.sendRedirect("gamemain.jsp");
}
}
Game.java
=========
package test;
import java.util.ArrayList;
import java.util.List;
public class Game {
private static Game instance = null;
private List moves;
private List players;
private Game() {
moves = new ArrayList();
players = new ArrayList();
}
public static synchronized Game getInstance() {
if(instance == null) {
instance = new Game();
}
return instance;
}
public void addPlayer(String player) {
players.add(player);
}
public void doMove(String move) {
moves.add(move);
}
public List getAllMoves() {
return moves;
}
public boolean isEnough() {
return players.size() == 2;
}
public String playerToMove() {
return (String)players.get(moves.size() % players.size());
}
}
Ny bruger
Nybegynder
Opret
Preview
