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<%@ 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>登录界面的数据处理</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>
<%
//设置请求的编码，用于解决中文乱码问题
request.setCharacterEncoding("UTF-8");
String name =request.getParameter("userName");
String password=request.getParameter("password");
if(request.getParameter("validationCode1").equals(request.getParameter("validationCode")))//判断输入的和随机的是否相等
{
if(name.equals("hanbing")&&(password.equals("123456"))){
//把用户名到session中
session.setAttribute("userName",name); //若用户名密码正确，将用户名添加到对象中
response.sendRedirect("loginCheckmain.jsp");
}else{
response.sendRedirect("login.jsp"); //若用户名密码不正确执行
}
}else{
response.sendRedirect("login.jsp"); //若验证码不相等执行
}
%>
<br>
</body>
</html>
<%@ 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>退出系统</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>
<%
session.invalidate();//销毁session
response.sendRedirect("login.jsp");//再次去登陆页面
%>
<br>
</body>
</html>
<%@ 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>登录界面</title>
<style type="text/css">
<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>
{font-size: 15px;}
</style>
<script type="text/javascript">
function mycheck() {
//判断用户名是否为空
if (form1.userName.value==""){
alert("用户名不能为空，请输入用户名！");
form1.userName.focus();
return;
}
//判断密码是否为空
if (form1.password.value=="") {
alert("密码不能为空，请输入密码！");
form1.password.focus();
return;
}
//判断验证码是否为空
if (form1.validationCode.value==""){
alert("验证码不能为空，请输入验证码!");
form1.validationCode.focus();
return;
}
//判断验证码是否正确
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 bgcolor="grey">
<form action="loginCheck.jsp" name="form1" method="post">
用户名：<input type="text" name="userName" size="15">
<br> 密 码：
<input type="password" name="password" size="15">
<br>
验证码：<input type="text" name="validationCode"
onKeyDown="if(event.keyCode==13){form1.submit.focus();}" size="6">
<%
int intmethod1 = (int) ((((Math.random()) * 5)) - 1);
int intmethod2 = (int) ((((Math.random()) * 5)) - 1);
int intmethod3 = (int) ((((Math.random()) * 5)) - 1);
int intmethod4 = (int) ((((Math.random()) * 5)) - 1);
//将得到的随机数进行连接
String intsum=intmethod1+""+intmethod2+intmethod3+intmethod4;
%>
<input type="hidden" name="validationCode1" value="<%=intsum%>">
<img style="height:20px;weight:20px" src="image/<%=intmethod1 %>.jpg">
<img style="height:20px;weight:20px" src="image/<%=intmethod2 %>.jpg">
<img style="height:20px;weight:20px" src="image/<%=intmethod3 %>.jpg">
<img style="height:20px;weight:20px" src="image/<%=intmethod4 %>.jpg">
<br>
<input type="submit" name="submit1" value="登录" onClick="mycheck()">
<input type="reset" value="重置">
</form>
<br>
</body>
</html>
<%@ 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>主界面</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 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="loginCheckexit.jsp">[退出系统]</a>
<br>
</body>
</html>
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