There is already an implicit session object in every jsp page, provided you
have not added a page directive to do the converse.
There is no need for HttpSession userSession = session.putValue("staffId",
staffId);
just session.putValue("staffId", staffId);
would suffice.
Have a nice day.
With regards,
Sachin S. Khanna.
www.emailanorder.com
----- Original Message -----
From: Chin Sung Kit <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, October 23, 2000 2:42 PM
Subject: Re: help,invalidate session
> u mean HttpSession userSession = session.putValue("staffId", staffId); ?
> i've done this already.
>
> "Sachin S. Khanna" wrote:
>
> > A better option would be to add a token string to the users session when
he
> > logs on to your site. And remove the token string from the session when
the
> > user wishes to log off. Another thing, you would have to check for the
token
> > string in every jsp page to see whether the user is logged on, if not
then
> > you must direct the user to the log on page.
> > ----- Original Message -----
> > From: Chin Sung Kit <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Monday, October 23, 2000 12:39 PM
> > Subject: help,invalidate session
> >
> > > hi,
> > >
> > > i have a problem invalidating the user's session.
> > >
> > > i have a <a href> link, if the user clicks on this link, it is
supposed
> > > to sign out the user - HttpSession.invalidate();
> > >
> > > my jsp code:
> > > <%
> > > String signout = request.getParameter("signout");
> > > if (signout != null)
> > > userSession.invalidate();
> > > %>
> > >
> > > i'm using tomcat3.1
> > >
> > > thanks for any help/suggestion.
> > >
> > > ced
> > >
> > > below is the error:
> > > Internal Servlet Error:
> > >
> > > javax.servlet.ServletException:
> > > at
> > >
> >
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImp
> > l.java:386)
> > >
> > > at
> > >
> >
jsp._0002fjsp_0002fsignin_0002ejspsignin_jsp_23._jspService(_0002fjsp_0002fs
> > ignin_0002ejspsignin_jsp_23.java:149)
> > >
> > > at
> > > org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java,
Compiled
> > > Code)
> > > at javax.servlet.http.HttpServlet.service(HttpServlet.java,
> > > Compiled Code)
> > > at
> > >
> >
org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.ja
> > va,
> > > Compiled Code)
> > > at
> > > org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java,
> > > Compiled Code)
> > > at
org.apache.jasper.runtime.JspServlet.service(JspServlet.java,
> > > Compiled Code)
> > > at javax.servlet.http.HttpServlet.service(HttpServlet.java,
> > > Compiled Code)
> > > at
> > >
org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrapper.java,
> > > Compiled Code)
> > > at
> > > org.apache.tomcat.core.ContextManager.service(ContextManager.java,
> > > Compiled Code)
> > > at
> > >
> >
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC
> > onnectionHandler.java,
> > > Compiled Code)
> > > at
> > >
org.apache.tomcat.service.TcpConnectionThread.run(SimpleTcpEndpoint.java,
> > > Compiled Code)
> > > at java.lang.Thread.run(Unknown Source)
> > >
> > > Root cause:
> > >
> > > java.lang.NullPointerException:
> > > at
> > >
> >
jsp._0002fjsp_0002fsignin_0002ejspsignin_jsp_23._jspService(_0002fjsp_0002fs
> > ignin_0002ejspsignin_jsp_23.java:136)
> > >
> > > at
> > > org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java,
Compiled
> > > Code)
> > > at javax.servlet.http.HttpServlet.service(HttpServlet.java,
> > > Compiled Code)
> > > at
> > >
> >
org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.ja
> > va,
> > > Compiled Code)
> > > at
> > > org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java,
> > > Compiled Code)
> > > at
org.apache.jasper.runtime.JspServlet.service(JspServlet.java,
> > > Compiled Code)
> > > at javax.servlet.http.HttpServlet.service(HttpServlet.java,
> > > Compiled Code)
> > > at
> > >
org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrapper.java,
> > > Compiled Code)
> > > at
> > > org.apache.tomcat.core.ContextManager.service(ContextManager.java,
> > > Compiled Code)
> > > at
> > >
> >
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC
> > onnectionHandler.java,
> > > Compiled Code)
> > > at
> > >
org.apache.tomcat.service.TcpConnectionThread.run(SimpleTcpEndpoint.java,
> > > Compiled Code)
> > > at java.lang.Thread.run(Unknown Source)
> > >
> > >
> >
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> > JSP-INTEREST".
> > > Some relevant FAQs on JSP/Servlets can be found at:
> > >
> > > http://java.sun.com/products/jsp/faq.html
> > > http://www.esperanto.org.nz/jsp/jspfaq.html
> > > http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
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> > >
> >
> >
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> > Some relevant FAQs on JSP/Servlets can be found at:
> >
> > http://java.sun.com/products/jsp/faq.html
> > http://www.esperanto.org.nz/jsp/jspfaq.html
> > http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
> > http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
>
>
===========================================================================
> To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff
JSP-INTEREST".
> Some relevant FAQs on JSP/Servlets can be found at:
>
> http://java.sun.com/products/jsp/faq.html
> http://www.esperanto.org.nz/jsp/jspfaq.html
> http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
> http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
>
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Some relevant FAQs on JSP/Servlets can be found at:
http://java.sun.com/products/jsp/faq.html
http://www.esperanto.org.nz/jsp/jspfaq.html
http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
