游戏要求:



代码实现:

c1_caishu_.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert title here</title></head><body>        请输出一个1~20的整数进行猜数!<%    int num = (int)Math.random()*20+1;    session.setAttribute("count", new Integer(0));//猜数的次数    session.setAttribute("randomNum", new Integer(num));//产生的随机数%><form action="c1_caishu_judge.jsp" method="post">        <input type="text" name="guess">        <input type="submit" name="tijiao" value="提交"></form></body></html>

c1_caishu_judge.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert title here</title></head><body><%    String str = request.getParameter("guess");//request.getParameter返回的是String类型    if(str==null && str.length()==0){        response.sendRedirect("c1_caishu_.jsp");    }else{        int userGuessNum = Integer.parseInt(str);//用户猜的数        session.setAttribute("guessNum", new Integer(userGuessNum));        Integer randomNum = (Integer)session.getAttribute("randomNum");//生成的随机数                if(userGuessNum == randomNum.intValue()){//猜对了            int n = ((Integer)session.getAttribute("count")).intValue();//猜数的次数            n++;            session.setAttribute("count", new Integer(n));            response.sendRedirect("c1_caishu_success.jsp");        }else if(userGuessNum > randomNum.intValue()){//猜大了            int n = ((Integer)session.getAttribute("count")).intValue();//猜数的次数            n++;            session.setAttribute("count", new Integer(n));            response.sendRedirect("c1_caishu_large.jsp");        }else{    //猜小了            int n = ((Integer)session.getAttribute("count")).intValue();//猜数的次数            n++;            session.setAttribute("count", new Integer(n));            response.sendRedirect("c1_caishu_small.jsp");        }    }%></body></html>

c1_caishu_large.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert title here</title></head><body><%    int guessNum = Integer.parseInt(session.getAttribute("guessNum").toString());//用户猜的数%><%=guessNum %>数大了,请再猜:<form action="c1_caishu_judge.jsp" method="post">        <input type="text" name="guess">        <input type="submit" name="tijiao" value="送出"></form></body></html>

c1_caishu_small.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert title here</title></head><body><%    Integer guessNum = (Integer)session.getAttribute("guessNum");//用户猜的数%><%=guessNum %>数小了,请再猜:<form action="c1_caishu_judge.jsp" method="post">        <input type="text" name="guess">        <input type="submit" name="tijiao" value="送出"></form></body></html>

c1_caishu_success.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert title here</title></head><body><%    Integer guessNum = (Integer)session.getAttribute("guessNum");//用户猜的数    Integer count = (Integer)session.getAttribute("count");//用户猜的次数%>祝贺你猜对了!!!<br><br>你猜的数为:<%=guessNum %><br><br>你一共猜了<%=count %>次<br><br>再来猜一次? <a href="c1_caishu_.jsp">好</a></body></html>