index.jsp

用JSP写的一个在线购物网站的代码

<%@ page contentType="text/html; charset=gb2312" import="java.sql.*" %>
<jsp:useBean id="data" scope="page" class="shop.data.conn" />
<style type="text/css">
<!-- @import url(../images/css.css); -->
</style>
<script language="javascript">
function check()
{
   if(document.login.adminid.value.length==0)
   {
      alert("请填写您的管理员帐号");
	  document.login.adminid.focus();
	  return false;
   }
   if(document.login.adminpwd.value.length==0)
   {
      alert("请填写您的管理员密码");
	  document.login.adminpwd.focus();
	  return false;
   }
}
</script>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<form action="" method="post" name="login" onSubmit="return check()">
<input type="hidden" name="thislogin" value="">
<table width="250" border="0" align="center" cellpadding="0" cellspacing="0">
  <tr> 
    <td width="80" height="20"><div align="right">用户名:</div></td>
    <td width="10"></td>
    <td><input type="text" name="adminid" size="15" maxtlength="10" style="background-color:#ECECEC; border-style:1; font-size: 11; color: #000000; font-family: arial, verdana, geneva"></td>
  </tr>
  <tr> 
    <td height="20"><div align="right">密　码:</div></td>
    <td></td>
    <td><input type="password" name="adminpwd" size="15" maxlength="10" style="background-color:#ECECEC; border-style:1; font-size: 11; color: #000000; font-family: arial, verdana, geneva"></td>
  </tr>
  <tr> 
    <td height="10" colspan="3"></td>
  </tr>
  <tr>
    <td height="30" colspan="3"><div align="center"><input type="submit" value="登陆" style="background-color:#ECECEC; border-style:1; font-size: 11; color: #000000; font-family: arial, verdana, geneva" onClick="document.all.thislogin.value='true';">　<input type="button" value="关闭" onClick="javascript:window.close()" style="background-color:#ECECEC; border-style:1; font-size: 11; color: #000000; font-family: arial, verdana, geneva"></div></td>
  </tr>
</table>
</form>
<%
String thislogin=request.getParameter("thislogin");
if(thislogin!=null && thislogin.equals("true"))
{
String adminid=request.getParameter("adminid");
String adminpwd=request.getParameter("adminpwd");
String sql="select * from admin where admin=\'"+adminid+"\' and password=\'"+adminpwd+"\'";
ResultSet rs=data.executeQuery(sql);
if(!rs.next())
{%>
<script language="javascript">
alert("错误的管理员帐号和密码");
</script>
<%}else{
session.putValue("admin",adminid);
response.sendRedirect("main.jsp");
}}%>