<%@ 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:
jsp-简单的猜数小游戏
原文地址：http://www.cnblogs.com/a1045417817/p/7582465.html