jsp大富翁猜数字游戏

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>大富翁猜数字游戏</title>
  </head>
  
  <body>
  <%
  	String msg = (String)request.getAttribute("msg");
  	if(msg!=null){
  	  out.write("<font color='red'>"+msg+"</font>");
  	}
   %>
    <%
  	 	//获取竞猜次数
  	 	Integer times = (Integer)request.getAttribute("times");
  	 	if(times!=null){
  	 		out.write(",你还有"+(5-times)+"次机会！");
  	 	}
  	  %>
<form action="/myday14guess/GuessServlet" method="get">
请输入30以内的整数：<input type="text" name="lucyNo">
<%
    		if(times!=null){
    	 %>
    	<input type="hidden" name="times" value="<%=times %>"/>
    	<%
    	}
    	 %>

<input type="submit" value="开始竞技">

</form>
  </body>
</html>

package gz.itcast.a_exec;

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

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

public class GuessServlet extends HttpServlet {

	int anwer;
	public void newGame(){
		Random random = new Random();
		anwer = random.nextInt(30);
	}
	
	public GuessServlet() {
		newGame();
	}
	
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		response.setContentType("text/html;charset=utf-8");
			//接收数据
		String lucyNoStr = request.getParameter("lucyNo");
		System.out.println("产生的随机数是：" + anwer);
		Integer lucyNo=null;
		if(lucyNoStr!=null || !lucyNoStr.equals("")){
			lucyNo = Integer.parseInt(lucyNoStr);
		}
		//当前竞技的次数
		Integer times=1;//初始的数值
		
		//接收客户端当前竞猜的次数
		String timesStr = request.getParameter("times");
		if(timesStr!=null && !timesStr.equals("")){
			times = Integer.parseInt(timesStr)+1;
		}
		
		if(times<5){
			String msg = "";
			//比较
			if(lucyNo>anwer){
				//大了
				msg = "可惜，大了点";
			}else if(lucyNo<anwer){
				//小了
				msg = "可惜，小了点";
			}else if(lucyNo==anwer){
				//等于,中奖
				msg = "恭喜你，中得1000000元现金大奖,请带身份证到xxx地方领奖！";
				times = null;
			}
			//把当前竞猜的次数放入域对象
			request.setAttribute("times", times);
			//把信息放入域对象中
			request.setAttribute("msg", msg);
		}else{
			//产生新的幸运数字
			newGame();
			//游戏结束
			response.getWriter().write("游戏结束。<a href='"+request.getContextPath()+"/guess.jsp'>再来一盘</a>");
			return;
		}
		//转发
		request.getRequestDispatcher("/guess.jsp").forward(request, response);
	}

	
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doGet(request,response);
	}

}

jsp大富翁猜数字游戏

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