JSP实现百万富翁猜数字游戏

本文实例为大家分享了JSP实现百万富翁猜数字游戏的具体代码，供大家参考，具体内容如下

设计一个web app，每次产生一个30以内的数字，给5次机会让客户猜测这个数字：

1）如果客户猜的数字比产生的数字值大，则提示“大了”。
2）如果客户猜的数字比产生的数字值小，则提示“小点”

猜对了就过关，猜错Game Over，给玩家重玩的机会。

JSP代码：

<%@ page language=\”java\” contentType=\”text/html; charset=UTF-8\”
pageEncoding=\”UTF-8\”%>
<!DOCTYPE html PUBLIC \”-//W3C//DTD HTML 4.01 Transitional//EN\” \”http://www.w3.org/TR/html4/loose.dtd\”>
<html>
<head>
<meta http-equiv=\”Content-Type\” content=\”text/html; charset=UTF-8\”>
<title>Insert title here</title>
</head>
<body>
<%
String result=(String)request.getAttribute(\”result\”);
if(result!=null){
out.write(\”<font color=\’red\’>\”+result+\”\'</font>\”);
}
%>

<%
Integer times=(Integer)request.getAttribute(\”times\”);
if(times!=null){
out.write(\”你还有\”+(5-times)+\”次机会!\”);
}
%>
<br/>
<form action=\”/zxz/zxz\” method=\”POST\”>
请输入你的数(20以下)：<input type=\”text\” name=\”Lucy\” /><br/>
<%
if(times!=null){
%>
<input type=\”hidden\” name=\”times\” value=\”<%=times %>\”/>
<%
}
%>
<input type=\”submit\” value=\”竞猜\” />
</form>
</body>
</html>

Servlet代码：

package hah;

import java.io.IOException;
import java.util.Random;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
* Servlet implementation class zxz
*/
@WebServlet(\”/zxz\”)
public class zxz extends HttpServlet {
private static final long serialVersionUID = 1L;

int answer;
public void newGame() {
Random random=new Random();
answer=random.nextInt(20);
}
public zxz() {
newGame();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType(\”text/html;charset=utf-8\”);
String lucyStr=request.getParameter(\”Lucy\”);
Integer lucyNb=null;
System.out.println(\”答案：\”+answer);
if(!lucyStr.equals(\”\”)) {
lucyNb=Integer.parseInt(lucyStr);
}
Integer times=1;

String timeStr=request.getParameter(\”times\”);
if(timeStr!=null&&!timeStr.equals(\”\”)) {
times=Integer.parseInt(timeStr)+1;
}
if(times<5) {
String result=\”\”;
if(lucyNb>answer) {
result=\”大了\”;
}else if(lucyNb<answer) {
result=\”小了\”;
}else if(lucyNb==answer) {
result=\”中了\”;
times=null;
}
request.setAttribute(\”times\”, times);
request.setAttribute(\”result\”, result);
}else {
newGame();
response.getWriter().write(\”游戏结束<a href=\’\”+request.getContextPath()+\”/One.jsp\’>再来一把</a>\”);
return;
}
request.getRequestDispatcher(\”/One.jsp\”).forward(request, response);
}