Create pdf and merge with pdfbox

Question

This is what I want to do:

1. Make 2 different pdf files using pdfbox

2. Merge these two files together using pdfmerger

I know how

Answer 1

Using REST and PDFBOX

@RequestMapping(value = "/getMergePdf", method = RequestMethod.GET)
    public ResponseEntity getMergePdf(@RequestParam(value = "filePath", required = true) String filePath,
            @RequestParam(value = "newFileName", required = true) String newFileName) throws IOException {

            // Step 1: Loading an Existing PDF Document
        File file = new File(filePath);
        File[] listFile = file.listFiles();

        // Step 2: Instantiating the PDFMergerUtility class
        PDFMergerUtility mergePdf = new PDFMergerUtility();

        // Step 3: Setting the source files
        for (File pdfName : listFile) {
            mergePdf.addSource(pdfName);
        }

        // Step 4: Setting the destination file
        ByteArrayOutputStream pdfDocOutputstream = new ByteArrayOutputStream();
        mergePdf.setDestinationFileName(newFileName + ".pdf");
        mergePdf.setDestinationStream(pdfDocOutputstream);
        mergePdf.mergeDocuments(MemoryUsageSetting.setupTempFileOnly());

        // Step 5: write in Response
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_PDF);

        // Here you have to set the actual filename of your pdf
        headers.setContentDispositionFormData(mergePdf.getDestinationFileName(), mergePdf.getDestinationFileName());
        headers.setCacheControl("must-revalidate, post-check=0, pre-check=0");
        ResponseEntity response = new ResponseEntity<>(pdfDocOutputstream.toByteArray(), headers, HttpStatus.OK);
        return response;


    }