Spring - display PDF-file in browser instead of downloading

i am trying to display a pdf in my browser with spring. my problem is that the browser downloads the file instead of displaying it. this is my code:

@RequestMapping(value="/getpdf1", method=RequestMethod.GET)
public ResponseEntity<byte[]> getPDF1() {


    HttpHeaders headers = new HttpHeaders();

    headers.setContentType(MediaType.parseMediaType("application/pdf"));
    String filename = "pdf1.pdf";

    headers.add("content-disposition", "inline;filename=" + filename);

    headers.setContentDispositionFormData(filename, filename);
    headers.setCacheControl("must-revalidate, post-check=0, pre-check=0");
    ResponseEntity<byte[]> response = new ResponseEntity<byte[]>(pdf1Bytes, headers, HttpStatus.OK);
    return response;
}

i am looking forward to your answers! thanks

Content-Disposition to control either download or view in browser

View in browser

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

Download

headers.add("Content-Disposition", "attachment; filename=" + "example.pdf");

You are almost done. Just remove

headers.setContentDispositionFormData(filename, filename);

from your code block. It should be used when posting multipart/form-data to the server.

Below code Snippet will assist you display the file on the browser

@GetMapping(value = "/terms-conditions")
    public ResponseEntity<InputStreamResource> getTermsConditions() {

        String filePath = "/path/to/file/";
        String fileName = "fileName.pdf";
        File file = new File(filePath+fileName);
        HttpHeaders headers = new HttpHeaders();      
        headers.add("content-disposition", "inline;filename=" +fileName);
        
        InputStreamResource resource = new InputStreamResource(new FileInputStream(file));

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