Issues in loading pdf file in browser Play Framework(Scala)

Question

I'm generating pdf file in my project using pdfbox api,initially i just stored the dynamically generated pdf file in my server and now i'm trying to stream pdf file in browser with following code

 Ok.stream(Enumerator.outputStream { os => 
          doc.writeToStream(os)//doc holds content of pdf file
          os.close()
        }).withHeaders(
          CONTENT_TYPE -> "application/pdf",
          CONTENT_DISPOSITION -> "attachment; filename=report.pdf"
        )

i have some response begins as

%PDF-1.4
%����
1 0 obj
<<
/Type /Catalog
/Version /1.4
/Pages 2 0 R
>>
endobj
2 0 obj

hope it looks like pdf file have generated ,but doesnt load in browser ..i dont know what i'm missing,i just want to load pdf file new tab

@barnesjd ya i tried chrome,safari,firefox...but no one worked.. — immutable, Sep 26 '13 at 09:55
"Doesn't load in Browser": Does that mean the browser does not download anything at all or that it's just downloaded an not displayed? — adhominem, Sep 26 '13 at 11:07
@adhominem im not downloading anything here...just try to open dynamically generated pdf in browser — immutable, Sep 26 '13 at 11:31
Well, but the browser has to download first before it can display — adhominem, Sep 26 '13 at 12:02
Can you capture the bytes actually send to the browser in the response? I suspect that would be revealing (fiddler2 would do it, or wireshark). And you are downloading something - the browser is downloadinf the pdf so it can display it. — The Archetypal Paul, Sep 26 '13 at 18:07

score 0 · Answer 1 · answered Sep 26 '13 at 11:10

Maybe the Enumerator is not closed properly.

Try this :

Ok.stream(Enumerator.outputStream { os => 
      doc.writeToStream(os)//doc holds content of pdf file
      os.close()
    } >>> Enumerator.eof).withHeaders(
      CONTENT_TYPE -> "application/pdf",
      CONTENT_DISPOSITION -> "attachment; filename=report.pdf"
    )

score 0 · Answer 2 · answered Sep 26 '13 at 13:02

something like:

val enumerator = Enumerator.outputStream { os =>
  doc.writeToStream(os)
  os.close
}

Ok.stream(enumerator >>> Enumerator.eof).as("application/pdf")

works great in my case too so i suppose there is something wrong with writeToStream. you could do a test by streaming a static image there is nothing special to configure in play framework

score 0 · Accepted Answer · edited May 23 '17 at 11:59

0

Try setting your CONTENT_DISPOSITION to "inline":

Ok.stream(Enumerator.outputStream { os => 
      doc.writeToStream(os)//doc holds content of pdf file
      os.close()
    }).withHeaders(
      CONTENT_TYPE -> "application/pdf",
      CONTENT_DISPOSITION -> "inline; filename=report.pdf"
    )

And see if it makes a difference.

It should, even though the specific behavior is browser dependent.

You can find more details regarding the Content-Disposition header here.

edited May 23 '17 at 11:59

Community

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answered Sep 26 '13 at 15:36

Jack Leow

21,945
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i just solved now...few problems in js about handling response...now i can open generated pdf in new window...i already tried CONTENT_DISPOSITION -> "inline; filename=report.pdf" ,anyway m accepting ur answer... – immutable Sep 27 '13 at 04:13

score 0 · Answer 4 · answered May 04 '16 at 16:25

0

The content length attribute in the header is missing .

https://www.playframework.com/documentation/2.5.x/ScalaStream

answered May 04 '16 at 16:25

Guillaume agis

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Issues in loading pdf file in browser Play Framework(Scala)

4 Answers4