Jsp页面中代码:
<% String name=""; String psw=""; String checked=""; Cookie[] cookies=request.getCookies(); if(cookies!=null && cookies.length!=0){ for(int i=0;i<cookies.length;i++){ Cookie cookie = cookies[i]; if(cookie.getName().equals("name")){ name = cookie.getValue(); checked="checked"; } if(cookie.getName().equals("psw")){ psw = cookie.getValue(); } } } %>
因为登录服务器端的用户可能不止一个,所以这里采用Cookie[ ]来记录所有访问该服务器的用户cookie。然后遍历该Cookie数组,找到该用户、密码则登录成功!
HTML代码如下:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>Cookie</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="css/style.css"> </head> <body> <div align="center" style="margin:10px; "> <fieldset> <legend>登录信息</legend> <form action="login.jsp" method="post"> <table> <tr> <td> 您的帐号: </td> <td> <%= name %> </td> </tr> <tr> <td> 密码: </td> <td> <%= pwd %> </td> </tr> </table> </form> </fieldset> </div> </body> </html>
<%= var%>是JSP获取变量的脚本,可以获取<% %>里int String boolean等各种类型的变量。