When you use request.sendRedirect, I assume that's what you're using to forward the page, you must make this call before you have written anything to the response, ie. using out.print or writing any html code.
Hans --- Pius Didimus <[EMAIL PROTECTED]> wrote: > Dear jsp expert, > I would like to continue this discussion but with > abit lower issue since I'm > a JSP beginner. I use Tomcat 4.1 and J2SDK 1.4.2 > > I made 3 basic pages: > 1. login page where user can submit his username and > pwd > 2. validation page to validate username and pwd from > database, I set the > session attribute here > 3. index page where is the main page, I tried to get > the session attribute > here > > When user has been validated at the validation page, > I then forward it to index page. > But I always got this at the index page: > "org.apache.jasper.JasperException: Error: Attempt > to clear a buffer that's > already been flushed" > > No matter what method I use to set and get the > session attribute, that error > always appear. I believe there must be a solution > for this as it is a very > common practise. Any suggestion maybe? Thank you in > advance.. > > > Regards, > Pius > > > -----Original Message----- > From: vtr [mailto:[EMAIL PROTECTED] > Sent: Friday, December 26, 2003 4:39 PM > Subject: Re: JSP issue > > That is because that page is not reloading and the > html has already been > created. It can be countered by adding a refresh > whenever the page returns > due to the back button. > > What i mean to say is > Check if the page is opened by back button , if it > is so then refresh the > page then all the variables get resend .. > and you can check if it is null. > > > regards > > V.T.R.Ravi Kumar, Engg.(CCX), BHEL Phone Office +91 > 1334285260 Mobile +91 > 1353114861 Woolsey-Swanson Rule: People would rather > live with a problem > they cannot solve rather than accept a solution they > cannot understand. > ----- Original Message ----- > From: "Mikil" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Friday, December 26, 2003 12:03 PM > Subject: Re: JSP issue > > > > Thanks for the reply. > > > > I have already tried that, but it doesn't work > when you click on the back > button of the browser, though the value is null. > > > > Any other suggestions welcomed. > > > > Rgds > > > > Mikil > > > > > > ----- Original Message ----- > > From: "vtr" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Friday, December 26, 2003 2:02 PM > > Subject: Re: JSP issue > > > > > > > The simple solution would be > > > Check the variable for null and redirect it to > someother page if it is > > > null.... > > > or just give a message > > > > > > > > > V.T.R.Ravi Kumar, Engg.(CCX), BHEL Phone Office > +91 1334285260 Mobile > +91 > > > 1353114861 > > > ----- Original Message ----- > > > From: "Mikil" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Monday, December 22, 2003 5:49 PM > > > Subject: JSP issue > > > > > > > > > > Hello everyone, > > > > > > > > I have a scenario which is very common but > don't know the solution and > > > thats where I need some help. > > > > > > > > Scenario: > > > > > > > > After signing out from a web application the > cookies are killed and > > > sessions invalidated. But when I click on the > back arrow key of the > browser, > > > the page with the user name appears though > infact the value is null. > > > > > > > > Solution: > > > > > > > > I am looking for the solution that when I > click on the back arrow of > the > > > browser, it should not allow what I mentioned > above but instead should > > > direct to a new page or home page. > > > > > > > > Await for your replies. > > > > > > > > Thank you in advance. > > > > > > > > Rgds > > > > > > > > Mikil > > =========================================================================== > To unsubscribe: mailto [EMAIL PROTECTED] with > body: "signoff JSP-INTEREST". > For digest: mailto [EMAIL PROTECTED] with body: > "set JSP-INTEREST DIGEST". > > Some relevant archives, FAQs and Forums on JSPs can > be found at: > > http://java.sun.com/products/jsp > http://archives.java.sun.com/jsp-interest.html > http://forums.java.sun.com > http://www.jspinsider.com __________________________________ Do you Yahoo!? Win a $20,000 Career Makeover at Yahoo! HotJobs http://hotjobs.sweepstakes.yahoo.com/careermakeover =========================================================================== To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST DIGEST". Some relevant archives, FAQs and Forums on JSPs can be found at: http://java.sun.com/products/jsp http://archives.java.sun.com/jsp-interest.html http://forums.java.sun.com http://www.jspinsider.com
