Open Pdf file on web page in Spring boot

Question

@GetMapping(value = "/pdf",produces= MediaType.APPLICATION_PDF_VALUE)
    public ResponseEntity<InputStreamResource> getTermsConditions() throws Exception {

        String filePath = "C:\\";
        String fileName = "PDF.pdf";
        File file = new File(filePath+fileName);
        HttpHeaders headers = new HttpHeaders();
//        headers.add("content-disposition", "inline;filename=" +fileName);
        headers.add("Content-Disposition", "attachment; filename=" + fileName);

        InputStreamResource resource = new InputStreamResource(new FileInputStream(file));
        return ResponseEntity.ok()
                .headers(headers)
                .contentLength(file.length())
                .contentType(MediaType.parseMediaType("application/pdf"))
                .body(resource);
    }

Open file, but format is incorrect.

�� 6 0 obj << /Type /ExtGState /BM /Normal /ca 1 >> endobj 7 0 obj << /Type /ExtGState /BM /Normal /CA 1 >> endobj 10 0 obj << /Filter /FlateDecode /Length 156465 /Length eP}��&֓��

Please help me. I want to open book pdf in browser like online library

It works for me (though it downloads the PDF instead of displaying it in the browser). Can you better describe what happens? What do you mean by "Open file"? In what program is the below output display? What browser are you using? Can you also show the details of the HTTP request (e.g. screen shot from browser's inspector). — Codo
– Codo, Commented Dec 25, 2021 at 14:43

Murat Kara · Accepted Answer · 2021-12-26 10:14:43Z

1

Using value "attachment" for response header "Content-Disposition" will download the PDF . Instead of displaying it in new tab.

Value "inline" for response header "Content-Disposition" will open the PDF in new tab in browser.

For example:

v1

headers.add("Content-Disposition", "inline;filename=PDF.pdf");

v2

headers.add(HttpHeaders.CONTENT_DISPOSITION, "inline;filename=PDF.pdf");

You can review: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Disposition

edited Dec 26, 2021 at 10:14

answered Dec 25, 2021 at 15:44

Murat Kara

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4 Comments

Codo Over a year ago

It's not "CONTENT_DISPOSITION", it's "CONTENT-DISPOSITION". "CONTENT_DISPOSITION" does not work.

Murat Kara Over a year ago

i mean this; headers.add(HttpHeaders.CONTENT_DISPOSITION, "inline;filename=PDF.pdf");

Codo Over a year ago

You better provide a code example. Otherwise people will write headers.add("CONTENT_DISPOSITION", ...); and wonder why it doesn't work. Even better would be headers.addContentDisposition(ContentDisposition.inline().filename(fileName).build());

Murat Kara Over a year ago

@Codo You said is true. I'm updating.

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