passwordForm.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();//获取上下文路径
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!--以上主要是获取路径地址 http://localhost:8080/projectname/jspname-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>"><!-头部类容-->
<title>My JSP 'passwordForm.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>
<!--javascript语言写的代码块-->
<script type="text/javascript">
function login(){
if(document.loginform.zhanghao.value==""){
window.alert("账号不能为空！");
return ;
}
if(document.loginform.mima.value==""){
window.alert("密码不能为空！");
return ;
}
loginform.submit();
}
</script>
<form action="passwordForm_result.jsp" name="loginform">
<h4 align="center"><b>欢迎登陆学生管理系统</b></h4><br>
<table align="center">
<tr>
<td>请输入账号：</td>
<td><input name="zhanghao" type="text"> </td>
</tr>
<tr>
<td>请输入密码：</td>
<td><input name="mima" type="password"> </td>
</tr>
<tr>
<td></td>
<td><input type="button" value="登录" onclick="login()"> <input type="button" value="忘记密码？"></td>
</tr>
</table>
</form>
</body>
</html><!--passwordForm_result.jsp-->
<%@ 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 'passwordForm_result.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>
<%
String user=request.getParameter("zhanghao");
String password=request.getParameter("mima");
%>
<table align="center">
<tr>
<td>账号为：</td>
<td><%= user %></td>
</tr>
<tr>
<td>密码为：</td>
<td><%= password %></td>
</tr>
</table>
</body>
</html>结果如图所示：
查看passwordForm_result.jsp的网页源代码
会发现java代码没有显示，是因为html和javascript都是前端语言，是浏览器编译运行的，而jsp/php/asp都是在服务器端运行的后端脚本语言
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