RE: prevent multiple form posts using only servlets
The way I handle this is to use javascript to disable the submit button after it has been clicked. This used in conjuction with the other suggestions should cover all possibilities -Original Message- From: Elihu Smails [mailto:[EMAIL PROTECTED] Sent: Thursday, December 09, 2004 7:13 PM To: Tomcat User List Subject: prevent multiple form posts using only servlets Is there a way to prevent multiple form posts from the same page/user/session using only servlets? I have a page where users can upload files, but I do not want them to keep smashing the upload button if their files are large, and the user becomes impatient. thank you. __ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Any opinions expressed in this E-mail may be those of the individual and not necessarily the company. This E-mail and any files transmitted with it are confidential and solely for the use of the intended recipient. If you are not the intended recipient or the person responsible for delivering to the intended recipient, be advised that you have received this E-mail in error and that any use or copying is strictly prohibited. If you have received this E-mail in error please notify the beCogent postmaster at [EMAIL PROTECTED] Unless expressly stated, opinions in this email are those of the individual sender and not beCogent Ltd. You must take full responsibility for virus checking this email and any attachments. Please note that the content of this email or any of its attachments may contain data that falls within the scope of the Data Protection Acts and that you must ensure that any handling or processing of such data by you is fully compliant with the terms and provisions of the Data Protection Act 1984 and 1998. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: prevent multiple form posts using only servlets
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Elihu Smails wrote: | Is there a way to prevent multiple form posts from the | same page/user/session using only servlets? I have a | page where users can upload files, but I do not want | them to keep smashing the upload button if their files | are large, and the user becomes impatient. ~ When they click the button, store a cookie, or set a value on the page, saying that the button was pressed, then ignore anything with the same filenames until this value is cleared. Or, just save each filename that is uploaded as a hidden variable in the form, and ignore duplicate names. - -- Love is mutual self-giving that ends in self-recovery. Fulton Sheen James Black[EMAIL PROTECTED] -BEGIN PGP SIGNATURE- Version: GnuPG v1.2.5 (MingW32) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFBuKR98psvJTl+fosRAu3HAJ41haEp/Oq52WfPGyn20OJq53ENiQCg2SNQ 7eBN42uboeFtE8lrbgxOYCk= =odrz -END PGP SIGNATURE- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: prevent multiple form posts using only servlets
Yes there is. But the problem is not really related to a servlet just to web architecture. A strategy is to put an object token in the session when you show the form and remove it when the user clicks upload. You will then deny uploads if you don't have the token in the session . Spring forms have support for it (www.springframework.com). /Roberto Elihu Smails wrote: Is there a way to prevent multiple form posts from the same page/user/session using only servlets? I have a page where users can upload files, but I do not want them to keep smashing the upload button if their files are large, and the user becomes impatient. thank you. __ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Roberto Cosenza Infoflex Connect AB, Sweden Tel: +46-(0)8-55576860, Fax: +46-(0)8-55576861 -- Nordic Messaging Technologies is a trademark of Infoflex Connect. Please visit www.nordicmessaging.se for more information about our carrier-grade messaging products. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: prevent multiple form posts using only servlets
Try this one: http://java.sun.com/developer/EJTechTips/2003/tt0114.html look on Preventing Repeated Operations Mark. --- Roberto Cosenza [EMAIL PROTECTED] wrote: Yes there is. But the problem is not really related to a servlet just to web architecture. A strategy is to put an object token in the session when you show the form and remove it when the user clicks upload. You will then deny uploads if you don't have the token in the session . Spring forms have support for it (www.springframework.com). /Roberto Elihu Smails wrote: Is there a way to prevent multiple form posts from the same page/user/session using only servlets? I have a page where users can upload files, but I do not want them to keep smashing the upload button if their files are large, and the user becomes impatient. thank you. __ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Roberto Cosenza Infoflex Connect AB, Sweden Tel: +46-(0)8-55576860, Fax: +46-(0)8-55576861 -- Nordic Messaging Technologies is a trademark of Infoflex Connect. Please visit www.nordicmessaging.se for more information about our carrier-grade messaging products. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] __ Do you Yahoo!? Dress up your holiday email, Hollywood style. Learn more. http://celebrity.mail.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[OT] Re: prevent multiple form posts using only servlets
Use javascript to disable or remove the button. [EMAIL PROTECTED] 12-09-2004 12:12 Is there a way to prevent multiple form posts from the same page/user/session using only servlets? I have a page where users can upload files, but I do not want them to keep smashing the upload button if their files are large, and the user becomes impatient. thank you. __ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
