需求: 添加页码

		<properties><easypoi.version>4.0.0</easypoi.version></properties>

        <!-- easypoi --><dependency><groupId>cn.afterturn</groupId><artifactId>easypoi-base</artifactId><version>${easypoi.version}</version></dependency><dependency><groupId>cn.afterturn</groupId><artifactId>easypoi-web</artifactId><version>${easypoi.version}</version></dependency><dependency><groupId>cn.afterturn</groupId><artifactId>easypoi-annotation</artifactId><version>${easypoi.version}</version></dependency>

package com.platform.modules.sas.utils;
import org.apache.poi.xwpf.model.XWPFHeaderFooterPolicy;
import org.apache.poi.xwpf.usermodel.*;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.*;import java.io.*;/*** ClassName   FooterTest* Description add footer to word with poi* Author  Kalinda* Date  2020/7/1 13:54* Version 1.0*/
public class FooterTest {public static void main(String[] args) {try {// file pathFile is = new File("D:/test.docx");FileInputStream fis = new FileInputStream(is);// document objectXWPFDocument doc = new XWPFDocument(fis);// calling methodcreateFooter(doc);// or this method both ok!// createFooter(doc);// outputOutputStream os = new FileOutputStream("D:\\Test1.docx");doc.write(os);} catch (Exception e) {e.printStackTrace();}}public static void createFooter(XWPFDocument doc) {// create footerXWPFHeaderFooterPolicy policy = doc.getHeaderFooterPolicy();CTP ctpFooter = CTP.Factory.newInstance();XWPFParagraph[] parsFooter;// add style (s.th.)CTPPr ctppr = ctpFooter.addNewPPr();CTString pst = ctppr.addNewPStyle();pst.setVal("style21");CTJc ctjc = ctppr.addNewJc();ctjc.setVal(STJc.CENTER);ctppr.addNewRPr();// add everything from the footerXXX.xml you needCTR ctr = ctpFooter.addNewR();ctr.addNewRPr();CTFldChar fch = ctr.addNewFldChar();fch.setFldCharType(STFldCharType.BEGIN);ctr = ctpFooter.addNewR();ctr.addNewInstrText().setStringValue(" PAGE ");ctpFooter.addNewR().addNewFldChar().setFldCharType(STFldCharType.SEPARATE);ctpFooter.addNewR().addNewT().setStringValue("1");ctpFooter.addNewR().addNewFldChar().setFldCharType(STFldCharType.END);XWPFParagraph footerParagraph = new XWPFParagraph(ctpFooter, doc);parsFooter = new XWPFParagraph[1];parsFooter[0] = footerParagraph;policy.createFooter(XWPFHeaderFooterPolicy.DEFAULT, parsFooter);}public static void createDefaultFooter(final XWPFDocument document) {CTP pageNo = CTP.Factory.newInstance();XWPFParagraph footer = new XWPFParagraph(pageNo, document);CTPPr begin = pageNo.addNewPPr();begin.addNewPStyle().setVal("style21");begin.addNewJc().setVal(STJc.CENTER);pageNo.addNewR().addNewFldChar().setFldCharType(STFldCharType.BEGIN);pageNo.addNewR().addNewInstrText().setStringValue("PAGE   \\* MERGEFORMAT");pageNo.addNewR().addNewFldChar().setFldCharType(STFldCharType.SEPARATE);CTR end = pageNo.addNewR();CTRPr endRPr = end.addNewRPr();endRPr.addNewNoProof();endRPr.addNewLang().setVal("zh-CN");end.addNewFldChar().setFldCharType(STFldCharType.END);CTSectPr sectPr = document.getDocument().getBody().isSetSectPr() ? document.getDocument().getBody().getSectPr() : docx.getDocument().getBody().addNewSectPr();XWPFHeaderFooterPolicy policy = new XWPFHeaderFooterPolicy(document, sectPr);policy.createFooter(STHdrFtr.DEFAULT, new XWPFParagraph[] { footer });}}