<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" errorPage="error.jsp"%>
<%@ page import= "edu.jmi.db.*" %>
<%@ page import= "edu.jmi.dao.*" %>
<%@ page import= "java.sql.*" %>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Custom Login Form Styling</title>
<meta name="description" content="Custom Login Form Styling with CSS3" />
<meta name="keywords" content="css3, login, form, custom, input, submit, button, html5, placeholder" />
<meta name="author" content="Codrops" />
<link rel="shortcut icon" href="../favicon.ico">
<link rel="stylesheet" type="text/css" href="css/style.css" />
<script src="js/modernizr.custom.63321.js"></script>
<!--[if lte IE 7]><style>.main{display:none;} .support-note .note-ie{display:block;}</style><![endif]-->
<style>
@import url(http://fonts.googleapis.com/css?family=Raleway:400,700);
body {
background: #7f9b4e url(images/bg2.jpg) no-repeat center top;
-webkit-background-size: cover;
-moz-background-size: cover;
background-size: cover;
}
.container > header h1,
.container > header h2 {
color: #fff;
text-shadow: 0 1px 1px rgba(0,0,0,0.7);
}
</style>
</head>
<body>
<%
request.setCharacterEncoding("UTF-8"); //设置编码
String name=request.getParameter("login"); //获取用户名
String pw = request.getParameter("password");
if(session.getAttribute("usr")!=null){
response.sendRedirect("main.jsp");
return;
}
if(name!=null){ //保证有输入值，第一次访问页面该值页面为null
//String dbpw=DB.validUser(name);//从数据库获取密码
UserDao ud=new UserDao();
String dbpw=ud.validUser(name);
if(dbpw!=null&&dbpw.equals(pw)){//登录成功
//设置传给主页面的参数:用户名
session.setAttribute("usr", name);
//进入主页面
response.sendRedirect("main.jsp");
}else{//登录出错
//设置出错参数
session.setAttribute("errmsg", "用户名或者密码错，请重新输入");
}
}
String err = (String)session.getAttribute("errmsg");
if(err==null){
err="";
}
%>
<div class="container">
<header>
<h1>登录界面</h1>
</header>
<section class="main">
<p>
<font color="red" size="28px"> <%=err %> </font>
</p>
<form class="form-4" method="post">
<p>
<label for="login">用户名或者邮箱</label>
<input type="text" name="login" placeholder="login" required>
</p>
<p>
<label for="password">密码</label>
<input type="password" name="password" placeholder="password" required >
</p>
<p>
<input type="submit" name="submit" value="提交">
</p>
</form>
</section>
</div>
</body>
</html>
确认密码可以在失去焦点时验证，使用ajax
输入id是什么意思？
你是要做一个注册功能吧？？？
input输入id就好啦，他有一个隐藏hidden属性的
验证密码用ajax可以同步验证返回结果，不过我看你前面验证用户名是否存在都没有用ajax而是用源生代码，那你验证也可以用源生代码写的