Thanks for sharing this Matt. I was just going down this road (caching) myself. This will save an afternoon or more. regards, mike
-----Original Message----- From: Savino, Matt C [mailto:[EMAIL PROTECTED]] Sent: Thursday, January 03, 2002 12:32 PM To: '[EMAIL PROTECTED]' Subject: Servlet called multiple times solved Thanks to David Frankson and the other members of this board, I have finally fully solved the problem with IE calling FOP two or three times problem. The first solution came from this: http://support.microsoft.com/support/kb/articles/Q293/7/92.ASP But if you read the fine print, you notice that IE only uses user-agent=contype on the second hit. That still leaves the first and third hits calling FOP. There are some clues to tell the difference betweent the first and third hits, so I was trying to only return the full PDF on the third hit. The problem is that IE sometimes decides to be content with only one hit, and sometimes it decides to make all three. There is no apparent rhyme or reason to this decision. If you only return the content-type on the first call when IE has decided to only make one call it just sits there. Anyway, the second part of the solution was to cache the PDF byte-array in the user's session and return it on any subsequent hits on the first pass. As a key to test that the PDFs are truly the same, I use a counter in the query string which is the time in milliseconds. Anyway here's the code. As usual there's a bunch of extra stuff, but I figure it may help. Please ask if you have any questions. -Matt <<ReportGeneratorServlet.java>> --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
