java poi生成word多级目录完整代码

以下是Java POI生成Word多级目录的完整代码示例：

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.poi.xwpf.usermodel.BreakType;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;
import org.apache.poi.xwpf.usermodel.XWPFStyle;
import org.apache.poi.xwpf.usermodel.XWPFStyles;
import org.apache.poi.xwpf.usermodel.XWPFTable;
import org.apache.poi.xwpf.usermodel.XWPFTableCell;
import org.apache.poi.xwpf.usermodel.XWPFTableRow;
import org.apache.xmlbeans.XmlCursor;
import org.apache.xmlbeans.XmlException;
import org.apache.xmlbeans.XmlObject;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTAbstractNum;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTAbstractNumId;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTLvl;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTNum;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTNumbering;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTNumbering.AbstractNum;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTNumbering.Num;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.STNumberFormat;

public class GenerateWordWithMultiLevelTOC {

    public static void main(String[] args) throws IOException, XmlException {
        // 创建一个空白的Word文档对象
        XWPFDocument document = new XWPFDocument();

        // 添加自定义样式
        addCustomHeadingStyle(document, "标题 1", 1);
        addCustomHeadingStyle(document, "标题 2", 2);
        addCustomHeadingStyle(document, "标题 3", 3);

        // 添加多级目录
        addMultiLevelTOC(document, "目录", 1, 3);

        // 添加正文内容
        XWPFParagraph paragraph = document.createParagraph();
        XWPFRun run = paragraph.createRun();
        run.setText("这是一级标题");
        run.addBreak(BreakType.TEXT_WRAPPING);
        run.setText("这是一级标题下的内容");

        paragraph = document.createParagraph();
        run = paragraph.createRun();
        run.setText("这是二级标题");
        run.addBreak(BreakType.TEXT_WRAPPING);
        run.setText("这是二级标题下的内容");

        paragraph = document.createParagraph();
        run = paragraph.createRun();
        run.setText("这是三级标题");
        run.addBreak(BreakType.TEXT_WRAPPING);
        run.setText("这是三级标题下的内容");

        // 输出到文件
        FileOutputStream out = new FileOutputStream(new File("output.docx"));
        document.write(out);
        out.close();
        document.close();
    }

    /**
     * 添加自定义标题样式
     * 
     * @param document Word文档对象
     * @param strStyleName 样式名称
     * @param headingLevel 标题级别
     */
    private static void addCustomHeadingStyle(XWPFDocument document, String strStyleName, int headingLevel) {
        // 获取样式表对象
        XWPFStyles styles = document.createStyles();

        // 创建一个新样式
        XWPFStyle style = document.createStyle();

        // 设置样式名称
        style.setStyleId(strStyleName);

        // 设置样式类型为标题
        style.setType(STStyleType.PARAGRAPH);

        // 设置样式基础样式为正文
        style.setBasedOn("Normal");

        // 设置样式字体
        style.getCTStyle().addNewRPr().addNewRFonts().setAscii("宋体");
        style.getCTStyle().getRPr().getRFonts().setHAnsi("宋体");
        style.getCTStyle().getRPr().getRFonts().setCs("宋体");

        // 设置样式段落属性
        style.getCTStyle().addNewPPr().addNewSpacing().setBeforeLines(BigInteger.valueOf(0));
        style.getCTStyle().getPPr().getSpacing().setBeforeAutospacing(true);
        style.getCTStyle().getPPr().getSpacing().setBefore(BigInteger.valueOf(0));
        style.getCTStyle().getPPr().getSpacing().setAfter(BigInteger.valueOf(0));
        style.getCTStyle().getPPr().getSpacing().setLineRule(STLineSpacingRule.AUTO);
        style.getCTStyle().getPPr().getSpacing().setLine(BigInteger.valueOf(240));

        // 设置样式级别
        CTAbstractNum abstractNum = CTAbstractNum.Factory.newInstance();
        abstractNum.setAbstractNumId(BigInteger.valueOf(10 + headingLevel));

        CTLvl lvl = abstractNum.addNewLvl();
        lvl.setIlvl(BigInteger.valueOf(headingLevel - 1));
        lvl.addNewNumFmt().setVal(STNumberFormat.DECIMAL);
        lvl.addNewLvlText().setVal("%" + headingLevel);
        lvl.addNewStart().setVal(BigInteger.valueOf(1));

        CTNumbering numbering = document.getDocument().getBody().addNewNumTbl();
        CTNum num = numbering.addNewNum();
        num.setNumId(BigInteger.valueOf(10 + headingLevel));
        num.addNewAbstractNumId().setVal(BigInteger.valueOf(10 + headingLevel));

        XWPFAbstractNum abs = new XWPFAbstractNum(abstractNum);
        XWPFNumbering numbering1 = new XWPFNumbering(numbering);
        BigInteger abstractNumID = numbering1.addAbstractNum(abs);

        BigInteger numID = numbering1.addNum(abstractNumID);
        style.getCTStyle().getPPr().addNewNumPr().addNewIlvl().setVal(BigInteger.valueOf(headingLevel - 1));
        style.getCTStyle().getPPr().getNumPr().addNewNumId().setVal(numID);

        // 将样式添加到样式表
        styles.addStyle(style);
    }

    /**
     * 添加多级目录
     * 
     * @param document Word文档对象
     * @param strTitle 目录标题
     * @param nMinHeadingLevel 最小标题级别
     * @param nMaxHeadingLevel 最大标题级别
     */
    private static void addMultiLevelTOC(XWPFDocument document, String strTitle, int nMinHeadingLevel,
            int nMaxHeadingLevel) {
        // 创建一个新段落
        XWPFParagraph paragraph = document.createParagraph();

        // 设置段落对齐方式为居中
        paragraph.setAlignment(ParagraphAlignment.CENTER);

        // 创建一个新运行
        XWPFRun run = paragraph.createRun();

        // 设置运行文本
        run.setText(strTitle);

        // 设置运行字体
        run.setFontSize(16);
        run.setBold(true);

        // 添加一个分页符
        paragraph = document.createParagraph();
        run = paragraph.createRun();
        run.addBreak(BreakType.PAGE);

        // 获取所有标题段落
        List<XWPFParagraph> headingParagraphs = new ArrayList<XWPFParagraph>();
        for (XWPFParagraph p : document.getParagraphs()) {
            String text = p.getText();
            if (text != null && text.length() > 0) {
                int headingLevel = getHeadingLevel(p);
                if (headingLevel >= nMinHeadingLevel && headingLevel <= nMaxHeadingLevel) {
                    headingParagraphs.add(p);
                }
            }
        }

        // 创建一个新表格
        XWPFTable table = document.createTable();

        // 创建表格行
        XWPFTableRow row = table.getRow(0);

        // 创建表格单元格
        XWPFTableCell cell = row.getCell(0);

        // 设置单元格文本
        cell.setText(strTitle);

        // 设置单元格样式
        cell.setVerticalAlignment(XWPFVertAlign.CENTER);
        cell.setColor("C0C0C0");
        cell.setBold(true);

        // 创建一个新编号
        CTNumbering numbering = CTNumbering.Factory.newInstance();

        // 获取所有标题段落的编号
        for (XWPFParagraph p : headingParagraphs) {
            int headingLevel = getHeadingLevel(p);

            // 创建一个新编号项
            CTAbstractNum abstractNum = numbering.addNewAbstractNum();
            abstractNum.setAbstractNumId(BigInteger.valueOf(headingLevel));

            // 创建一个新编号级别
            CTLvl lvl = abstractNum.addNewLvl();
            lvl.setIlvl(BigInteger.valueOf(headingLevel - nMinHeadingLevel));
            lvl.addNewNumFmt().setVal(STNumberFormat.DECIMAL);
            lvl.addNewLvlText().setVal("%" + headingLevel);
            lvl.addNewStart().setVal(BigInteger.valueOf(1));

            // 获取段落编号
            CTNum num = numbering.addNewNum();
            num.setNumId(BigInteger.valueOf(headingLevel));
            num.addNewAbstractNumId().setVal(BigInteger.valueOf(headingLevel));

            // 将段落编号添加到编号项
            XWPFAbstractNum abs = new XWPFAbstractNum(abstractNum);
            XWPFNumbering numbering1 = new XWPFNumbering(numbering);
            BigInteger abstractNumID = numbering1.addAbstractNum(abs);
            BigInteger numID = numbering1.addNum(abstractNumID);

            // 设置段落编号
            p.setNumID(numID);
        }

        // 遍历所有标题段落，添加目录项
        for (XWPFParagraph p : headingParagraphs) {
            int headingLevel = getHeadingLevel(p);

            // 创建一个新段落
            paragraph = document.createParagraph();

            // 创建一个新运行
            run = paragraph.createRun();

            // 设置运行文本
            run.setText(getHeadingText(p));

            // 设置运行字体
            run.setFontSize(12);

            // 设置段落缩进
            paragraph.setIndentationLeft(headingLevel * 720);

            // 添加目录项
            addTOCItem(paragraph, p);
        }
    }

    /**
     * 获取段落标题级别
     * 
     * @param paragraph 段落对象
     * @return 标题级别
     */
    private static int getHeadingLevel(XWPFParagraph paragraph) {
        String style = paragraph.getStyle();
        if (style != null && style.startsWith("标题 ")) {
            return Integer.parseInt(style.substring(3));
        }
        return -1;
    }

    /**
     * 获取段落标题文本
     * 
     * @param paragraph 段落对象
     * @return 标题文本
     */
    private static String getHeadingText(XWPFParagraph paragraph) {
        String text = paragraph.getText();
        if (text != null && text.length() > 0) {
            int pos = text.indexOf(' ');
            if (pos > 0) {
                return text.substring(pos + 1);
            }
        }
        return text;
    }

    /**
     * 添加目录项
     * 
     * @param paragraph 目录段落
     * @param headingParagraph 标题段落
     */
    private static void addTOCItem(XWPFParagraph paragraph, XWPFParagraph headingParagraph) {
        // 获取段落编号
        BigInteger numID = headingParagraph.getNumID();

        // 获取段落编号对象
        XWPFNum num = headingParagraph.getDocument().getNumbering().getNum(numID);

        // 获取段落编号级别
        int ilvl = num.getCTNum().getLvlOverrideArray(0).getIlvl().intValue();

        // 获取段落编号文本
        String numText = num.getCTNum().getLvlOverrideArray(0).getLvl().getLvlText().getVal();

        // 获取段落文本
        String text = getHeadingText(headingParagraph);

        // 创建一个新运行
        XWPFRun run = paragraph.createRun();

        // 设置运行文本
        run.setText(numText + " " + text);

        // 设置运行字体
        run.setFontSize(12);

        // 设置运行样式
        run.getCTR().addNewRPr().addNewNoProof();

        // 创建一个新运行
        run = paragraph.createRun();

        // 设置运行文本
        run.setText(" ");
    }

}