<%...@page contentType="text/html; charset=GBK" language="java" import="java.sql.*" errorPage="" %>
<html><head><meta http-equiv="Content-Type" content="text/html; charset=GBK" /><title>jsp 利用cookie 记住用户名和密码</title></head><%...
if(request.getParameter("send")!=null){Cookie cookie=new Cookie(request.getParameter("userno"), request.getParameter("password")); cookie.setMaxAge(360*24*60*60); response.addCookie(cookie); }Cookie cookies[]=request.getCookies(); Cookie sCookie=null; String svalue=null; 
String sname=null; %><script language="javascript">...var UserNo=new Array(); UserNo[0]="";var Password=new Array(); Password[0]="";</script><%...for(int i=0;i<cookies.length;i++){ sCookie=cookies[i]; %><script language="javascript">...UserNo[<%=i%>]="<%=sCookie.getName()%>";Password[<%=i%>]="<%=sCookie.getValue()%>"; </script><%...out.print(sCookie.getName()+" "+sCookie.getValue()+"</br>");}%><body><form id="form1" name="form1" method="post" action=""> <p> <input type="text" name="userno" /> <input type="submit" name="send" value="s" /> </p> <p> <input type="text" name="password" onclick="return oUserNo_onchange()"/></p></form></body></html><SCRIPT language=javascript>...
function oUserNo_onchange()...{ for(i=0;i<UserNo.length;i++) if(form1.userno.value==UserNo[i]) form1.password.value=Password[i];} </script>