<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>登录页面</title>
<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.fouse();
return;
}
if(form1.password.value==""){
alert("密码不能为空，请输入密码！");
form1.password.fouse();
return;
}
if(form1.validationCode.value==""){
alert("验证码不能为空，请输入验证码！");
form1.validationCode.fouse();
return;
}
if(form1.validationCode.value!=form1.validationCode1.value){
alert("请输入正确的验证码！");
form1.validationCode.fouse();
return;
}
form1.submit();
}
</script>
</head>
<body bgcolor="white">
<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="17">
<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);
String intsum=intmethod1+""+intmethod2+intmethod3+intmethod4;
%>
<input type="hidden" name="validationCode1" value="<%=intsum%>">
<input type="text" value="<%=intsum%>" readonly="true" size=2>
<br>
<input type="button" name="submit1" value="登录" onClick="mycheck()">
<input type="reset" value="重置">
</form>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>处理登录页面的数据</title>
</head>
<body bgcolor="white">
<%
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("djp")&&(password.equals("666666"))){
session.setAttribute("userName",name);
response.sendRedirect("main.jsp");
}else{
response.sendRedirect("login.jsp");
}
}else{
response.sendRedirect("login.jsp");
}
%>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>系统主页面</title>
</head>
<body bgcolor="white">
<%
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 language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>退出系统</title>
</head>
<body>
<%
session.invalidate();
response.sendRedirect("login.jsp");
%>
</body>
</html>
