How to remove a line with a particular content in docx4j - docx4j

Question

I want to delete a particular line in the docx if it has a particular word, say "killer".
How i can write a program using docx4j?
If i replace it with empty data, the line will be still there. I want to remove the whole line.
I tried something like this,
private void replacePlaceholders(WordprocessingMLPackage targetDocument,
String nameOfTheInvitedGuest) throws JAXBException {
List<Object> texts = targetDocument.getMainDocumentPart()
.getJAXBNodesViaXPath(XPATH_TO_SELECT_TEXT_NODES, true);
System.out.println(texts.size());
Iterator<Object> itr = texts.iterator();
while (itr.hasNext()) {
Object obj = itr.next();
Text text = (Text) ((JAXBElement) obj).getValue();
// System.out.println(text.getValue());
if (text.getValue().contains("Hulk Hogan")) {
itr.remove();
}
else {
String textValue = replacePlaceholderOfInvitedGuestWithGivenName(
nameOfTheInvitedGuest, text.getValue());
for (Object key : templateProperties.keySet()) {
textValue = textValue.replaceAll("\\$\\{" + key + "\\}",
(String) templateProperties.get(key));
}
text.setValue(textValue);
}
}
System.out.println(texts.size());
}
But its still showing in the docx file.

Answer 1

A Text element in a docx file has parent elements. The text will reside within a Run which in turn will sit within a block element like a paragraph (P node) or a table cell. If you're looking to remove a particular block element based on its textual content, once you've located the relevant text elements, you need to move up the parent elements, and remove them too -- for example, if the ultimate parent is a paragraph node, remove that.
If say, a paragraph displays as 3 lines in Word and you are trying to remove the 2nd line in that paragraph, then you have a different and more challenging problem.

Answer 2

maybe this will help futur people :
if(((org.docx4j.wml.Text) o2).getValue().contains("WhatYouWant")) {
// if your text contains "WhatYouWant" then...
Object o4 =((org.docx4j.wml.Text)o2).getParent();
//gets R
Object o5 = ((org.docx4j.wml.R) o4).getParent();
// gets P
Object o6 = ((org.docx4j.wml.P) o5).getParent();
// gets SdtElement
((List<List<Object>>) o6).remove(o5);
// now you remove your P (paragraph)
}
I had a content control (SdtElement) but I needed to put it in List < List < Object > > don't really know why but.... You might have something else so check in your document.xml before copy/pasting this.
This is for others who have a hard time, like I did to understand docx4j

Answer 3

You could use Apache POI to remove Text from docx file as shown below.
public static void removeTextFromDocx(FileInputStream inpudocxfile, String stringToBeReplaced,
String stringToBeReplacedWith, FileOutputStream outputdocxfile) {
XWPFDocument document = null;
try {
//loading docx file
document = new XWPFDocument(inpudocxfile);
for (XWPFParagraph paragraph : document.getParagraphs()) {
List<XWPFRun> runs = paragraph.getRuns();
for (XWPFRun run : runs) {
//reading an entire paragraph. So size of list is 1 and index of first element is 0
String text = run.getText(0);
if (text != null) {
if (text.contains(stringToBeReplaced)) {
text = text.replace(stringToBeReplaced, stringToBeReplacedWith);
text = text.trim();
run.setText(text, 0);
}
}
}
}
for (XWPFTable table : document.getTables()) {
for (XWPFTableRow row : table.getRows()) {
for (XWPFTableCell cell : row.getTableCells()) {
for (XWPFParagraph paragraph : cell.getParagraphs()) {
for (XWPFRun run : paragraph.getRuns()) {
String text = run.getText(0);
if (text != null) {
if (text.contains(stringToBeReplaced)) {
text = text.replace(stringToBeReplaced, stringToBeReplacedWith);
text = text.trim();
run.setText(text, 0);
}
}
}
}
}
}
}
document.write(outputdocxfile);
} catch (IOException e) {
LOGGER.error("Could not create outputdocxFile --> IOEXception" + e);
}
}