<%@ 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">
-->
<script type="text/javascript">
function mycheck(){
//检查用户名
if(form1.userName.value==""){
alert("请输入用户名");
form1.userName.focus();
return;
}
//判断密码
if(form1.password.value==""){
alert("请输入密码");
form1.password.focue();
return;
}
//判断验证码
if(form1.validationCode.value==""){
alert("请输入验证码");
form1.validationCode.foucs();
return;
}
//判断验证码是否有误
if(form1.validationCode.value!=form1.validationcode1.value){
alert("请输入正确的验证码");
form1.validationCode.foucs();
return;
}
form1.submit();
}
</script>
</head>
<body>
<form action="dologin.jsp" method="post">
用户名:<input type="text" name="uname" value="小白" /><Br>
密码 ：<input type="password" name="upwd" value="88888"/><br>
<br>验证：<input type="text" name="validationCode" onKeyDown="if(event.keyCode==13){form1.submit.focus();}" size="6" style="margin-top:15px">
<%
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);
//连接随机数
String intsum=intmethod1+""+intmethod2+intmethod3+intmethod4;
%>
<!--设置隐藏域，验证比较时使用-->
<div style="margin-top:15px">
<input type="hidden" name="validationCode1" value="<%=intsum%>">
<img src="images/<%=intmethod1%>.gif">
<img src="images/<%=intmethod2%>.gif">
<img src="images/<%=intmethod3%>.gif">
<img src="images/<%=intmethod4%>.gif">
<input type="submit" name="submit1" value="登录" onClick="mycheck()" style="margin-top:15px">
</form>
</body>
</html>
