How to replace placeholders in header of docx in java using poi 3.8

Question

I\'m tying to replace tokens in the header of docx file.I have handled the token replacement in paragraphs and tables but its not picking the header data. Im using apache po

Answer 1

This methods will replace all selected text, in tables, headers and paragraph, in the entire document.

public XWPFDocument replacePOI(XWPFDocument doc, String placeHolder, String replaceText){
    // REPLACE ALL HEADERS
    for (XWPFHeader header : doc.getHeaderList()) 
        replaceAllBodyElements(header.getBodyElements(), placeHolder, replaceText);
    // REPLACE BODY
    replaceAllBodyElements(doc.getBodyElements(), placeHolder, replaceText);
    return doc;
}

private void replaceAllBodyElements(List bodyElements, String placeHolder, String replaceText){
    for (IBodyElement bodyElement : bodyElements) {
        if (bodyElement.getElementType().compareTo(BodyElementType.PARAGRAPH) == 0)
            replaceParagraph((XWPFParagraph) bodyElement, placeHolder, replaceText);
        if (bodyElement.getElementType().compareTo(BodyElementType.TABLE) == 0)
            replaceTable((XWPFTable) bodyElement, placeHolder, replaceText);
    }
}

private void replaceTable(XWPFTable table, String placeHolder, String replaceText) {
    for (XWPFTableRow row : table.getRows()) {
        for (XWPFTableCell cell : row.getTableCells()) {
            for (IBodyElement bodyElement : cell.getBodyElements()) {
                if (bodyElement.getElementType().compareTo(BodyElementType.PARAGRAPH) == 0) {
                    replaceParagraph((XWPFParagraph) bodyElement, placeHolder, replaceText);
                }
                if (bodyElement.getElementType().compareTo(BodyElementType.TABLE) == 0) {
                    replaceTable((XWPFTable) bodyElement, placeHolder, replaceText);
                }
            }
        }
    }  
}

private void replaceParagraph(XWPFParagraph paragraph, String placeHolder, String replaceText) {
    for (XWPFRun r : paragraph.getRuns()) {
        String text = r.getText(r.getTextPosition());
        if (text != null && text.contains(placeHolder)) {
            text = text.replace(placeHolder, replaceText);
            r.setText(text, 0);
        }
    }
}