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Progress page display while running export servlet

Sunny Maliik
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Problem in hand: i have to show a progress page after i call excel download servlet.

current behavior: from JSP -> call servlet(excel download) -> blank page shows up and close itself after process is over and user can download excel file. i want to show progress page in between instead of blank page.
excel servlet contenttype is set to "application/x-msexcel"

what i tried so far: Main(JSP) -> calls a dummy servlet -> dummy servlet redirects call to dummy JSP with progress image/text and creates a form and on submit calls -> Excel servlet
with above, every thing works but Progress page remains open even after download is done.

basic requirement is to show atleast a static message with image on progress page and close progress page once download is done.

Please suggest any other way to perform this task........ any help is appreciated.

It is sorta covered in the JavaRanch Style Guide.
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