CODEWITHSUNDEEP
javaservletspdfoutputstream
bethlis
bethlis

Reputation: 55

OutputStream via Servlet destroys pdf

I'm trying to send a static pdf (which is on the system) to a outputStream in order to display a save-as-dialog. But when the Pdf is opened only an empty page is displayed:

here's the code which should display the dialog:

    //get the pdf:
    String pathToPdf = servletContext.getRealPath("/pdfFiles/dealer.pdf");
    File pdfFile = new File (pathToPdf);

    response.setContentType("application/pdf");
    response.addHeader("Content-Disposition", "attachment; filename=dealer.pdf");
    response.setContentLength((int) pdfFile.length());

    FileInputStream fileInputStream = new FileInputStream(pdfFile);
    OutputStream responseOutputStream = response.getOutputStream();
    int bytes;
    while ((bytes = fileInputStream.read()) != -1) {
        responseOutputStream.write(bytes);
        }
    responseOutputStream.flush();
    responseOutputStream.close();

The Stacktrace says the following:

WARNING: Invalid HTML; bare lessthan sign found at line 4. Surroundings: '<
/Creator (Apache FOP Version'.
WARNING: Invalid HTML; bare lessthan sign found at line 5. Surroundings: '/Creator (Apache FOP Version 1'.
WARNING: Invalid HTML; bare lessthan sign found at line 11. Surroundings: '<
  /N 3
  /Length 11 0 R
  /F'.
WARNING: Invalid HTML; bare lessthan sign found at line 12. Surroundings: '/N 3
  /Length 11 0 R
  /Filte'.
WARNING: Invalid HTML; bare lessthan sign found at line 18. Surroundings: '?s??e???'?9???`??2?&c?tI?'.
WARNING: Invalid tag found: unexpected input while looking for attr name or '/>' at line 25. Surroundings: '?+?U?Zp'pWp?????????e?F|'.
WARNING: Invalid HTML; bare lessthan sign found at line 68. Surroundings: '<
  /Name /Im1
  /Type /XObjec'.
WARNING: Invalid HTML; bare lessthan sign found at line 69. Surroundings: '/Name /Im1
  /Type /XObject
  '.
WARNING: Invalid tag found: unexpected input while looking for attr name or '/>' at line 85. Surroundings: '??r??"?F?t??$??n{?q??O~??{?'.

Can anyone say what I'm missing or doing wrong? Thanks!!

Upvotes: 1

Views: 565

Answers (2)

bethlis
bethlis

Reputation: 55

I had to add the following:

context.responseComplete();

So the complete code looks like this now:

response.setContentType("application/pdf");
            response.setHeader("Content-Disposition", "attachment; filename=\"PdfName.pdf\"");
            response.setContentLength(outStream.size());

            OutputStream responseOutputStream = response.getOutputStream();
            outStream.writeTo(responseOutputStream);

            responseOutputStream.flush();
            responseOutputStream.close();
            context.responseComplete();

Upvotes: 0

david
david

Reputation: 862

You should try to call

response.reset();

before setting the content type. Maybe a library has set the headers already and the different headers would collide.

Upvotes: 1

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