CODEWITHSUNDEEP
javapdfbox
Rajendra kumar Sahoo
Rajendra kumar Sahoo

Reputation: 241

Not able to add extra content to an existing PDF using PDFBox

I am using PdfBox to generate pdf with an existing Pdf containing the template which has to be used for every Pdf that i want to generate.

But When i try to load the template pdf and wants to write something in it, all previous contains were removed.

So i want both the content should be shown.

Please suggest any solution for it.

Here is the code i am trying to do :

//Loading an existing document 
File file = new File("/home/spaneos/ScoringReports-TM-110617.pdf"); 
PDDocument document = PDDocument.load(file); 

//Retrieving the pages of the document 
PDPage page = document.getPage(0);
PDPageContentStream contentStream = new PDPageContentStream(document, page);
//Begin the Content stream 
contentStream.beginText(); 

//Setting the font to the Content stream
contentStream.setFont( PDType1Font.TIMES_ROMAN, 16 );

//Setting the leading
contentStream.setLeading(14.5f);

//Setting the position for the line
contentStream.newLineAtOffset(25, 725);

String text1 = "This is an example of adding text to a page in the pdf document.we can add as many lines";
String text2 = "as we want like this using the ShowText()  method of the ContentStream class";

//Adding text in the form of string
contentStream.showText(text1);
contentStream.newLine();
contentStream.showText(text2);

//Creating PDImageXObject object
PDImageXObject pdImage = PDImageXObject.createFromFile("/home/spaneos/Downloads/man-161282_960_720.png",document);

//creating the PDPageContentStream object
PDPageContentStream contents = new PDPageContentStream(document, page);

contentStream.endText();

System.out.println("Content added");

//Closing the PDPageContentStream object
contents.close();   

//Closing the content stream
contentStream.close();

//Saving the document 
document.save(System.getProperty("user.dir").concat("/PdfBox_Examples/sample.pdf"));

//Closing the document  
document.close();

Upvotes: 2

Views: 2894

Answers (1)

mkl
mkl

Reputation: 95918

You create the PDPageContentStream instances like this

PDPageContentStream contentStream = new PDPageContentStream(document, page);
[...]
PDPageContentStream contents = new PDPageContentStream(document, page);

Creating it using this constructor replaces any existing content streams with the new one. Instead use this one:

PDPageContentStream contents = new PDPageContentStream(document, page, AppendMode.APPEND, true, true);

AppendMode.APPEND here tells PDFBox to append the new stream, the first true tells it to compress the stream, and the second true tells it to reset the graphics state at the start of your added stream.

Furthermore, you don't really use the second content stream...

Upvotes: 3

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