<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>登录</title>
<style type="text/css">
</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);
String intsum=intmethod1+""+intmethod2+intmethod3+intmethod4;
%>
<input type="hidden" name="validationCode1" value="<%=intsum%>">
<img style="height:20px;weight:20px" src="num/<%=intmethod1 %>.png">
<img style="height:20px;weight:20px" src="num/<%=intmethod2 %>.png">
<img style="height:20px;weight:20px" src="num/<%=intmethod3 %>.png">
<img style="height:20px;weight:20px" src="num/<%=intmethod4 %>.png">
<br>
<input type="submit" name="submit1" value="登录" onClick="mycheck()">
<input type="reset" value="重置">
</form>
<br>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</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")))
if(name.equals("l")&&(password.equals("1"))){
//把用户名到session中
session.setAttribute("userName",name);
response.sendRedirect(" main.jsp");
}else{
response.sendRedirect("login.jsp");
}else{
response.sendRedirect("loginjsp");
}
%>
</body>
</html>
