jsp第四作业第二道题
<%@ 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%>">
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<TITLE>登录验证</TITLE>
<STYLE type="text/css">
td{font-size:12px}
</STYLE>
<SCRIPT type="text/javascript">
function checkLogin(){
var userName=document.myform.userid.value;
var userPass=document.myform.passwd.value;
var vegName=/^[a-zA-Z0-9]+$/;
if(!vegName.test(userName)){
alert("用户名错误，请重新输入");
document.myform.userid.focus();
return false;
}
var regPwd=/^\w{6,}$/;
if(!regPwd.test(userPass)){
alert("密码输入错误，请重新输入");
document.myform.passwd.select();
return false;
}
return true;
}
</SCRIPT>
</HEAD>
<BODY>
<FORM NAME="myform" METHOD="POST" action="dologin.jsp" onSubmit="return checkLogin()">
<TABLE align="center">
<TR>
<TD>
<IMG src="images/Snap1.jpg"><DIV style="position:absolute; left: 490px; top: 216px; width: 356px;">
<TABLE width="100%" height="100%" border=0 cellPadding=0 cellSpacing=0>
<TBODY>
<TR vAlign=top>
<TD width="23%"
height=27 align=right class=bld>用户名: </TD>
<TD height="27" align=left><INPUT TYPE="text" SIZE="20" NAME="userid"><BR>用户名由字母和数字组成</TD>
</TR>
<TR vAlign=top>
<TD class=bld align=right height=27>密码: </TD>
<TD height="27" align=left><INPUT TYPE="password" SIZE="20" NAME="passwd"><BR>密码由字母、数字和下划线组成，至少6位</TD>
</TR>
<TR vAlign=top>
<TD class=bld align=right height=40> </TD>
<TD align=left valign="middle"><A href="#"><INPUT name="submit" type="image" src="images/login.gif" width="101" height="22" border="0" ></A> </TD>
</TR>
</TABLE></DIV>
</TD>
</TR>
</TABLE>
</FORM>
</BODY>
</HTML>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String userid=request.getParameter("userid");
String passwd=request.getParameter("passwd");
if(userid.equals("lucky")&&passwd.equals("123456")){
//跳转到ok页面
request.getRequestDispatcher("ok.jsp").forward(request, response);
}else{
//跳转到No页面
request.getRequestDispatcher("no.jsp").forward(request, response);
}
%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <h2>你好 lucky</h2> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> 登录失败 <br> <a href="mailLogin.jsp"> <input type="button" value="重新登录"> </a> </body> </html>
