java poi生成目录

你可以使用Apache POI库来生成目录。下面是一个简单的示例代码，演示如何使用POI生成目录：

import org.apache.poi.xwpf.usermodel.*;

import java.io.FileOutputStream;

public class GenerateTOC {
    public static void main(String[] args) {
        try {
            XWPFDocument document = new XWPFDocument();

            // 添加标题
            XWPFParagraph title = document.createParagraph();
            XWPFRun titleRun = title.createRun();
            titleRun.setText("Table of Contents");
            titleRun.setBold(true);
            titleRun.setFontSize(16);

            // 创建目录
            XWPFParagraph toc = document.createParagraph();
            XWPFRun tocRun = toc.createRun();
            tocRun.addBreak();
            tocRun.setText("Table of Contents");
            tocRun.setFontSize(12);
            tocRun.setBold(true);

            // 创建页码
            XWPFParagraph pageNumber = document.createParagraph();
            XWPFRun pageNumberRun = pageNumber.createRun();
            pageNumberRun.addBreak();
            pageNumberRun.setText("Page");
            pageNumberRun.setFontSize(12);
            pageNumberRun.setBold(true);

            // 添加标题和页码到目录
            for (int i = 1; i <= 5; i++) {
                XWPFParagraph paragraph = document.createParagraph();
                XWPFRun run = paragraph.createRun();
                run.setText("Chapter " + i);
                run.setFontSize(12);
                run.setBold(true);
                run.addTab();
                run.setText(Integer.toString(i + 1));
                paragraph.setIndentationLeft(300);
                paragraph.setSpacingAfter(0);
                paragraph.setSpacingBefore(0);
                paragraph.setNumID(document.addNewNumbering().getNumberingID());
            }

            // 保存文档
            FileOutputStream out = new FileOutputStream("TOC.docx");
            document.write(out);
            out.close();

            System.out.println("目录生成成功！");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

这段代码会生成一个包含目录的Word文档。你可以根据需要修改标题和页码的内容、字体大小、加粗等样式。保存的文档名为 "TOC.docx"。