XWPF POI footer different in last page - header

Question

How to set footer diferrent only in last page. I mean, in last page no footer or different. in first page and other are same.
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this is my docx

Answer 1

There is not a header/footer only for the last page in Microsoft Word.
There are different header/footer settings possible for first page, even pages and default pages. There the default header/footer gets used for each pages if not else is defined. So if there is a header/footer for even pages and a setting that odd and even pages shall be different, then default header/footer gets used as header/footer for odd pages only. If there is no such setting, then the default header/footer gets used for each page. This is except first page, if there is a special header/footer for first page set.
But a Word document can be separated into different sections. And each section may have own header/footer settings. So if, and only if, the last page is in its own section, then there can be a different header/footer for the last page (last section) only.
Unfortunately apache poi do not provide methods to set sections in XWPF. And it only provides methods to set the three different header/footer types in document. So to get a XWPFDocument separated into sections and to set different header/footer settings for those sections, a little bit cheating is necessary.
One could create one of the three possible header/footer types only to set it to be the default header/footer for an own section later. The following example shows this. It creates a footer for even pages in document, which never gets used but later gets referenced as the default footer for the last section. Note the further comments in the code.
Of course that only can work if one at least knows where the last page starts. That must be known because the section break needs to be set before the content of the lase page.
import java.io.*;
import org.apache.poi.xwpf.usermodel.*;
import org.apache.poi.wp.usermodel.HeaderFooterType;
public class CreateWordDifferentFooters {
public static void main(String[] args) throws Exception {
XWPFDocument document = new XWPFDocument();
XWPFParagraph paragraph;
XWPFRun run;
XWPFFooter footer;
//create footers
//footer for first page
footer = document.createFooter(HeaderFooterType.FIRST);
paragraph = footer.createParagraph();
run = paragraph.createRun();
run.setText("Footer FIRST");
//default footer = footer for each what is not else defined
footer = document.createFooter(HeaderFooterType.DEFAULT);
paragraph = footer.createParagraph();
run = paragraph.createRun();
run.setText("Footer DEFAULT");
//footer for even pages - gets default footer for page in last section later
footer = document.createFooter(HeaderFooterType.EVEN);
paragraph = footer.createParagraph();
run = paragraph.createRun();
run.setText("Footer EVEN = DEFAULT in last section");
//the body content
//section 1
paragraph = document.createParagraph();
run = paragraph.createRun();
run.setText("First page in first section ...");
paragraph = document.createParagraph();
run = paragraph.createRun();
run.addBreak(BreakType.PAGE);
paragraph = document.createParagraph();
run = paragraph.createRun();
run.setText("Second page in first section ...");
paragraph = document.createParagraph();
run = paragraph.createRun();
run.addBreak(BreakType.PAGE);
paragraph = document.createParagraph();
run = paragraph.createRun();
run.setText("Third page in first section ...");
paragraph = document.createParagraph();
//paragraph with section setting for section above and section break
paragraph = document.createParagraph();
org.openxmlformats.schemas.wordprocessingml.x2006.main.CTSectPr ctSectPrSect1 = paragraph.getCTP().addNewPPr().addNewSectPr(); //we need ctSectPrSect1 later
//section 2
paragraph = document.createParagraph();
run = paragraph.createRun();
run.setText("Fourth and last page. Only page in last section ...");
//section setting for section above = last section in document
org.openxmlformats.schemas.wordprocessingml.x2006.main.CTDocument1 ctDocument = document.getDocument();
org.openxmlformats.schemas.wordprocessingml.x2006.main.CTBody ctBody = ctDocument.getBody();
org.openxmlformats.schemas.wordprocessingml.x2006.main.CTSectPr ctSectPrLastSect = ctBody.getSectPr(); //there must be a SectPr already because of the footer settings above
//move first and default footer to section 1
org.openxmlformats.schemas.wordprocessingml.x2006.main.CTHdrFtrRef ctHdrFtrRef0 = ctSectPrLastSect.getFooterReferenceArray(0); // first footer
org.openxmlformats.schemas.wordprocessingml.x2006.main.CTHdrFtrRef ctHdrFtrRef1 = ctSectPrLastSect.getFooterReferenceArray(1); // default footer
org.openxmlformats.schemas.wordprocessingml.x2006.main.CTHdrFtrRef[] ctHdrFtrRefs = new org.openxmlformats.schemas.wordprocessingml.x2006.main.CTHdrFtrRef[]{ctHdrFtrRef0, ctHdrFtrRef1};
ctSectPrSect1.setFooterReferenceArray(ctHdrFtrRefs);
//set "there is a title page" for section 1 to make first footer work
org.openxmlformats.schemas.wordprocessingml.x2006.main.CTOnOff ctOnOff = org.openxmlformats.schemas.wordprocessingml.x2006.main.CTOnOff.Factory.newInstance();
ctOnOff.setVal(true);
ctSectPrSect1.setTitlePg(ctOnOff);
//set footer reference of even footer to be default footer reference for last section
org.openxmlformats.schemas.wordprocessingml.x2006.main.CTHdrFtrRef ctHdrFtrRef = ctSectPrLastSect.getFooterReferenceArray(2);
ctHdrFtrRef.setType(org.openxmlformats.schemas.wordprocessingml.x2006.main.STHdrFtr.DEFAULT); //change this from STHdrFtr.EVEN to STHdrFtr.DEFAULT
//unset "there is a title page" for the last section
ctSectPrLastSect.unsetTitlePg();
//remove first and old default footer references from last section
ctSectPrLastSect.removeFooterReference(1);
ctSectPrLastSect.removeFooterReference(0);
FileOutputStream out = new FileOutputStream("./CreateWordDifferentFooters.docx");
document.write(out);
out.close();
document.close();
}
}
This is tested and works using current apache poi 5.2.0.