Java: Need to create PDF from byte-Array

Question

From a DB2 table I\'ve got blob which I\'m converting to a byte array so I can work with it. I need to take the byte array and create a PDF out of it.

This

Answer 1

Read from file or string to bytearray.

byte[] filedata = null;
String content = new String(bytearray);
content = content.replace("\r", "").replace("\uf8ff", "").replace("'", "").replace("\"", "").replace("`", "");
String[] arrOfStr = content.split("\n");
PDDocument document = new PDDocument();
PDPage page = new PDPage();
document.addPage(page);
try (PDPageContentStream cs = new PDPageContentStream(document, page)) {
    // setting font family and font size
    cs.beginText(); 
    cs.setFont(PDType1Font.HELVETICA, 14);
    cs.setNonStrokingColor(Color.BLACK);
    cs.newLineAtOffset(20, 750);
    for (String str: arrOfStr) {
        cs.newLineAtOffset(0, -15);
        cs.showText(str);
    }
    cs.newLine();
    cs.endText();
}
document.save(znaFile);
document.close();

Answer 2

 public static String getPDF() throws IOException {

        File file = new File("give complete path of file which must be read");
        FileInputStream stream = new FileInputStream(file);
        byte[] buffer = new byte[8192];
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        int bytesRead;enter code here
        while ((bytesRead = stream.read(buffer)) != -1) {
            baos.write(buffer, 0, bytesRead);
        }
        System.out.println("it came back"+baos);
        byte[] buffer1= baos.toByteArray();
        String fileName = "give your filename with location";

        //stream.close();
        
        
         FileOutputStream outputStream =
                    new FileOutputStream(fileName);
         
         outputStream.write(buffer1);
        
         return fileName;
        
    }

Answer 3

One can utilize the autoclosable interface that was introduced in java 7.

try (OutputStream out = new FileOutputStream("out.pdf")) {
   out.write(bArray);
}

Answer 4

Sending your output through a FileWriter is corrupting it because the data is bytes, and FileWriters are for writing characters. All you need is:

OutputStream out = new FileOutputStream("out.pdf");
out.write(bArray);
out.close();