<%@ 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>My JSP ‘game.jsp‘ starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%!int count = 0;%>
<%
Object obj = session.getAttribute("numint");//第一次访问的时候，为null，第二次访问之后，都有值
if (obj == null) {
Random r = new Random();
obj = r.nextInt(100);
session.setAttribute("numint", obj);
}
int rm = Integer.parseInt(obj.toString());
%>
<%
String numstr = request.getParameter("num");//获取猜数的数字
int cou=0;
if (numstr != null && !"".equals(numstr)) {//直接浏览器url访问jsp，num值为null，提交的时候，没有输入num的值，num值为""
//num肯定是有值
count++;
cou=count;
int num = Integer.parseInt(numstr);
if (num > rm) {
out.println("太大了");
} else if (num < rm) {
out.println("太小了");
} else {
out.println("终于猜正确了");
Random r = new Random();
obj = r.nextInt(100);
session.setAttribute("numint", obj);
count=0;
}
}
%>
欢迎您玩猜数游戏,猜了
<%=cou%>次<%--<%out.print(rm); --%>
<form action="game.jsp" method="post">
<br> 输入数字 <input name="num"> <input type="submit"
value="点击确认">
</form>
</body>
</html>
运行截图:
时间： 2024-12-11 18:36:02