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Subject: RE: Session Times Out
Date: Mon, 3 Nov 2003 12:20:03 +0200
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Thread-Topic: Session Times Out
Thread-Index: AcOh8snf5rPfyx13SN2PTt5SXG4iBAAALDcw
From: "Seyhan BASMACI (Internet Yazilimlari Yetkilisi)" <sbasmaci@teb.com.tr>
To: "Struts Users Mailing List" <struts-user@jakarta.apache.org>
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I think best way to check session is to extend requestProcessor Class =
and override processPath method,

-----Original Message-----
From: Jose Ramon Diaz [mailto:jose.diaz@aranzadi.es]
Sent: Monday, November 03, 2003 12:06 PM
To: 'Struts Users Mailing List'
Subject: RE: Session Times Out



 Hi,
But be carefull because the actions will be executed before redirecting =
to
JSP, so I think it?s better to check the session in all the actions, =
isn?t
it?


>
> Make a custom tag like so :
>
>
>
> Create a tld file with this in  it :
>
> <?xml version=3D"1.0" encoding=3D"ISO-8859-1" ?>
> <!DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP
> Tag Library
> 1.1//EN" "http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd">
> <taglib>
>       <tlibversion>1.0</tlibversion>
>       <jspversion>1.1</jspversion>
>       <shortname>Tag Libs</shortname>
>       <info>ustom Tags</info>
>       <tag>
>             <name>checkLogin</name>
>
> <tagclass>com.cpaglobal.cpadirect.tag.CheckLogin</tagclass>
>             <bodycontent>empty</bodycontent>
>             <info>Checks the login status of a user and
> forward them to the
> login page if not logged in.</info>
>             <attribute>
>                   <name>loginPage</name>
>                   <required>false</required>
>                   <rtexprvalue>false</rtexprvalue>
>             </attribute>
>             <attribute>
>                   <name>default</name>
>                   <required>false</required>
>                   <rtexprvalue>false</rtexprvalue>
>             </attribute>
>       </tag>
> </taglib>
>
>
>
> Code for the custom tag :
>
> package com.cpaglobal.cpadirect.tag;
>
> import java.io.IOException;
>
> import javax.servlet.ServletException;
> import javax.servlet.http.HttpSession;
> import javax.servlet.jsp.JspException;
> import javax.servlet.jsp.tagext.TagSupport;
>
> import com.cpaglobal.cpadirect.applicationlogic.SessionVariables;
> import com.cpaglobal.cpadirect.applicationlogic.User;
>
>
> public class CheckLogin extends TagSupport {
>
>
>       private String loginPage =3D "/JSP/Timeout.jsp";
>
>
>       public void setLoginPage(String loginPage) {
>             this.loginPage =3D loginPage;
>       }
>
>       public int doStartTag() throws JspException {
>          return (SKIP_BODY);
>       }
>
>       public int doEndTag() {
>             try {
>                   HttpSession session =3D pageContext.getSession();
>                   if (session !=3D null) {
>                         User user =3D (User)
> session.getAttribute(SessionVariables.SESSION_LOGGED_ON_USER);
>                         if (user =3D=3D null) {
>                               pageContext.forward(loginPage);
>                               return (SKIP_PAGE);
>                         }
>                   } else {
>                         pageContext.forward(loginPage);
>                         return (SKIP_PAGE);
>                   }
>             } catch(ServletException e) {
>                   new JspException(e.toString());
>             } catch(IOException e) {
>                   new JspException(e.toString());
>             }
>             return (EVAL_PAGE);
>       }
>
> }
>
> How to use it :
>
> <%@ taglib uri=3D"/WEB-INF/cpa.tld" prefix=3D"cpa"%>
> <cpa:checkLogin/>
>
> Mike
>
>
>
>
> |---------+---------------------------->
> |         |           Caroline Jen     |
> |         |           <jiapei_jen@yahoo|
> |         |           .com>            |
> |         |                            |
> |         |           03/11/2003 06:23 |
> |         |           AM               |
> |         |           Please respond to|
> |         |           "Struts Users    |
> |         |           Mailing List"    |
> |---------+---------------------------->
>
> >-------------------------------------------------------------
> -----------------------------------------------------------------|
>   |
>                                                                    |
>   |       To:       struts-user@jakarta.apache.org
>                                                                    |
>   |       cc:
>                                                                    |
>   |       Subject:  Session Times Out
>                                                                    |
>
> >-------------------------------------------------------------
> -----------------------------------------------------------------|
>
>
>
>
> I check if session expires for each action in the
> application.  If the session times out, I forward the
> user to index.jsp so that the user can log on again.
>
> How do I inform the user with a message that he/she is
> at the welcome page because the session has expired?
>
> __________________________________
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