The double-download is unavoidable AFAIK. The reason is that IE does not believe the server header for mime type. It double checks by downloading the file header. I think it only downloads the front part of the file. Maybe only the first 512 bytes. According to a Microsoft article I read, this is a feature. It allows IE to launch Excel (or Word, PowerPoint, or any other Office tool) even on ISPs that do not support the custom mime types, which would be the standard way of telling a browser what type of file is being downloaded.
The second download would be from Excel. Excel would not know about the cookies you are probably using to identify the user session, so it looks like a new session in the log. You cannot prevent the double-download (I don't think). But you can make the second download part of the session. Just send the URL through HttpSession.encodeUrl(). -----Original Message----- From: Reto Badertscher [mailto:[EMAIL PROTECTED]] Sent: Wednesday, May 22, 2002 6:05 AM To: POI Users List Subject: AW: POI and JSP Hello, i do it similar as described. Additionally I add a header as follows: response().addHeader("Content-disposition", "attachement; filename=" + file.getName()); The file will be opened by IE, but in a new session. When looking at my logs i have 2 requests for a download: 1. From the user who requested the file and has already a session and is identified 2. The same request in a new session The URL:/server/app/control?action=dir_browser_download&user=1&area=download&fil e=test.xls Does anyone knows why this happens and how to prevent it Thanks Reto -----Urspr�ngliche Nachricht----- Von: Danny Angus [mailto:[EMAIL PROTECTED]] Gesendet: Mittwoch, 22. Mai 2002 10:36 An: POI Users List; Ferruccio Spagna Betreff: RE: POI and JSP > The only problem is now that IExplorer > doesn't open Excel automatically (Netscape does), or can I do > something for > this? I tried to stream to the client an xls from a servlet that specifies > the content-type without having better result. 1/ set content-type to "application/x-excel" 2/ make your link end with .xls EG: http://mysite.com/context/servlet/org.apache.test/x.xls?param=value This works, M$IE recognises "x.xls" as an excel file, and tomcat will call org.apache.test.doGet(), and pass in the parameters correctly, to generate it. M$IE opens Excel in a COM in-browser process. You can also use the URL in the File->open dialogue of Excel to open the generated xls file directly without using IE. d. -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
