CODEWITHSUNDEEP
pdfitext
Emerald
Emerald

Reputation: 11

How to replace hyperlink text in PDF using itext

I need to replace a particular hyperlink in multiple PDF pages which has images, links, paragraph texts, etc. I am able to change the annotations but not the corresponding link text. Here's the code so far

for (int i = 1; i <= reader.getNumberOfPages(); i++) {
PdfArray array = reader.getPageN(i).getAsArray(PdfName.ANNOTS); 
if (array == null) continue;
for (int j = 0; j < array.size(); j++) {        
    PdfDictionary annot = array.getAsDict(j);
    PdfDictionary link = (PdfDictionary)reader.getPdfObjectRelease(annot);
    if(i==1 && j==0 || i==2 && j==0 || i==3 && j==0 || i==4 && j==0 || i==4 && j==1){
        link.put(PdfName.A, new PdfAction(newurl));
    }
}
}

I have tried replacing the link text using the below code but it doesn't seem to be present in the stream bytes.

PdfObject object = dict.getDirectObject(PdfName.CONTENTS);
if (object instanceof PRStream) {
    PRStream stream = (PRStream)object;
    byte[] data = PdfReader.getStreamBytes(stream);
    stream.setData(new String(data).replace(oldstring, newstring).getBytes());
}

Also, the link text underline has to be retained

Upvotes: 0

Views: 1346

Answers (1)

Emerald
Emerald

Reputation: 11

Below code worked for me where I had to change hyperlinks appearing at the same location in multiple pages

Chunk url = new Chunk(new_url_text);
url.setUnderline(0.1f, -2f);        
BaseColor bcolor = new BaseColor(0xFF, 0xFF, 0xFF);
Font ffont = new Font();
ffont.setColor(0, 114, 53);
ffont.setSize(12);
Phrase p = new Phrase("",ffont);    // Text that appears before the link can be added here (optional)
p.add(url); 
int pages = reader.getNumberOfPages();
for (int j = 1; j <= reader.getNumberOfPages(); j++) {
    PdfContentByte canvas = stamper.getOverContent(j);
    canvas.setColorFill(bcolor);
    canvas.rectangle(270, 135, 500, 40);
    canvas.fill();          
    ColumnText.showTextAligned(canvas, Element.ALIGN_LEFT, p, 340, 160, 0);
}

Upvotes: 1

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