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I develope a GWT-application which creates a PDF-file at the server, and then transferres it to the client. At the client-side, a window appears which allows the user either to

  • open it with a program assigned to the file name ending, or
  • save it to disc.

I have read several threads to this topic, such as

and that helped me coding the doGet()-methode in my print-servlet like this: 

resp.setContentType("application/octet-stream");
resp.setHeader("Content-Disposition:", "attachment; filename=\"" + fileName + "\"");

This works fine when testing and debugging using the local GWT-developement server.

But my big problem is:
After deploying to GAE and running the code on GAE, the created pdf-name is not transferred to the client...!
Instead of e.g. TestPdf-25072016.pdf, the name only consists of the word print.

This leads to the fact that the standard-program for a PDF is not invoked automatically when I want to open it. And, of course, print is not the name of the PDF I want to have...

Where is my failure? Especially I am confused that everything works fine when using the local developement server?

Thanks a lot for your support!

Community
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Nullpointer
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1 Answers1

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You could use a tool like Wireshark or Fiddler to capture the actual HTTP header sent to you when you call printing in GAE. Maybe GAE is adjusting the header or just blocking it.

Sebastian Baumhekel
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