<%@ 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 'index.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">
-->
<style type="text/css">
body{font-size:16px;}
</style>
<script type="text/javascript">
function mycheck(){
if(form1.userName.value==""){
alert("用户名不能为空，请输入用户名");
form1.userName.focuse();
return;
}
if(form1.password.value==""){
alert("密码不能为空，请输入密码");
form1.password.focus();
return;
}
if(form1.validationCode.value==""){
alert("验证码不能为空，请输入验证码");
form1.validationCode.focus();
return;
}
if(form1.validationCode.value!=form1.validationCode1.value){
alert("请输入正确的验证码");
form1.validationCode.focus();
return;
}
form1.submit1();
}
</script>
</head>
<body>
<form action="loginCheck.jsp" name="form1" method="post">
用户名:<input type="text" name="userName" size="16"><br>
密 码:
<input type="password" name="password" size="18"><br>
验证码:<input type="text" name="validationCode"
onkeyDown="if(event.keyCode==13){form1.submit.focus();}" size=6>
<%
int intmethod1 = (int)(((Math.random())*11)-1);
int intmethod2 = (int)(((Math.random())*11)-1);
int intmethod3 = (int)(((Math.random())*11)-1);
int intmethod4 = (int)(((Math.random())*11)-1);
//将的到的随机数进行连接
String intsum = ""+intmethod1+intmethod2+intmethod3+intmethod4;
%>
<!--设置隐藏域验证比较时使用 -->
<input type="hidden" name="validationCode1" value="<%=intsum%>">
<input type="text" value="<%=intsum%>" size=5>
<br>
<input type="submit" name="submit1" value="登录" onClick="mycheck()">
<input type="reset" value="重置">
</form>
<br>
</body>
</html>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<html>
<head>
<title>处理登录页面的数据</title>
</head>
<body bgcolor="pink">
<%
//设置请求的编码，永远解决中文乱码问题
request.setCharacterEncoding("UTF-8");
String name = request.getParameter("userName");
String password = request.getParameter("password");
if(request.getParameter("validationCode1").equals(request.getParameter("validationCode"))){
if(name.equals("xufeifan")&&password.equals("666666")){
session.setAttribute("userName", name);
response.sendRedirect("main.jsp");
}else{
response.sendRedirect("Login.jsp");
}
}else{
response.sendRedirect("Login.jsp");
}
%>
</body>
</html>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<html>
<head>
<title>系统主页面</title>
</head>
<body bgcolor="pink">
<%
//获取保存在session中的用户名
String name=(String)session.getAttribute("userName");
%>
您好<%=name%>,欢迎您访问！<br>
<a href="exit.jsp">[退出系统]</a>
</body>
</html>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<html>
<head>
<title>退出系统</title>
</head>
<body>
<%
session.invalidate();//销毁session
response.sendRedirect("login.jsp");
%>
</body>
</html>
