Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

about remember login in JSP

Posted on 2003-11-13
3
Medium Priority
?
1,009 Views
Last Modified: 2008-02-01
Hi There,
I have made a JSP login page in which Iwant to make a Remember Me check box .
If any user comes again my Username text box will display its username automatically.
Can anybody help me or give me any idea about it.
If possible with some example code.
Thanks in advance.
0
Comment
Question by:m_sharma98
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 2

Accepted Solution

by:
DidierD earned 80 total points
ID: 9785957
You have to use a cookie for this.

something like:


with JSP
  To set the cookie
 
    with JSP
      <%
        if (request.getParameter("rememberMe") != null) {
          Cookie myCookie = new Cookie("username", request.getParameter("username"));
          //myCookie .setMaxAge(24 * 60 * 60);
          response.addCookie(myCookie );
        }
    %>


  To read the cookie

  <%
    String username;
    Cookie [] cookies = request.getCookies();
    for( int i =0 ; i < cookies.length ; i++){
      if(cookies[i].getName().equals("username")){
         username = cookies[i].getValue();              
      }
    }
  %>

  and to put it on the screen

  <input type="text" name="username" value="<%=username%>">



Or with Javascript

  <script>
    function setCookie(name, value, expires, path, domain, secure){
      document.cookie= name + "=" + escape(value) +
          ((expires) ? "; expires=" + expires.toGMTString() : "") +
          ((path) ? "; path=" + path : "") +
          ((domain) ? "; domain=" + domain : "") +
          ((secure) ? "; secure" : "");
   }

   function getCookie(name){
      var dc = document.cookie;
      var prefix = name + "=";
      var begin = dc.indexOf("; " + prefix);
      if (begin == -1)
      {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
      }
      else
      {
        begin += 2;
      }
      var end = document.cookie.indexOf(";", begin);
      if (end == -1)
      {
        end = dc.length;
      }
      return unescape(dc.substring(begin + prefix.length, end));
    }

    function gotoOK(){
      setCookie(username, document.all.username.value);
      document.yourForm.action="yourjsp.jsp";
      document.submit();
    }

  </script>

  and then on you form a button to do your submit
 
  <input type="button" name="myButton" value="OK" onclick="javascript:gotoOK();">


  <input type="text" name="username" value="<script>getCookie(username)</script>">


I can not test all the code here, so you might have to change some things. But this should give you an idea how to do it.

Greetz,
Didier
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article demonstrates how to create a simple responsive confirmation dialog with Ok and Cancel buttons using HTML, CSS, jQuery and Promises
This article explains how to prepare an HTML email signature template file containing dynamic placeholders for users' Azure AD data. Furthermore, it explains how to use this file to remotely set up a department-wide email signature policy in Office …
In this tutorial viewers will learn how to style a corner ribbon overlay for an image using CSS Create a new class by typing ".Ribbon":  Define the class' "display:" as "inline-block": Define its "position:" as "relative": Define its "overflow:" as …
The viewer will learn how to create a basic form using some HTML5 and PHP for later processing. Set up your basic HTML file. Open your form tag and set the method and action attributes.: (CODE) Set up your first few inputs one for the name and …

660 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question