Java 使用 Apache POI 合并 Word 文档并复制书签内容

package word;

import org.apache.poi.xwpf.usermodel.*;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTSimpleField;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.List;

public class Word {
    public static void main(String[] args) {
        try {
            // 打开输入文档1
            XWPFDocument inputDoc1 = new XWPFDocument(new FileInputStream('input01.docx'));

            // 打开输入文档2
            XWPFDocument inputDoc2 = new XWPFDocument(new FileInputStream('input02.docx'));

            // 创建输出文档
            XWPFDocument outputDoc = new XWPFDocument();

            // 复制输入文档1的内容到输出文档
            copyDocumentContent(inputDoc1, outputDoc);

            // 复制输入文档1中指定书签的内容到输出文档
            copyBookmarkContent('应变计', inputDoc1, outputDoc);

            // 复制输入文档2中指定书签的内容到输出文档
            copyBookmarkContent('位移计', inputDoc2, outputDoc);

            // 保存输出文档
            FileOutputStream out = new FileOutputStream('input04.docx');
            outputDoc.write(out);
            out.close();

            System.out.println('复制完成');
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    // 复制文档内容
    private static void copyDocumentContent(XWPFDocument sourceDoc, XWPFDocument targetDoc) {
        for (IBodyElement element : sourceDoc.getBodyElements()) {
            if (element instanceof XWPFParagraph) {
                XWPFParagraph paragraph = (XWPFParagraph) element;
                targetDoc.createParagraph().createRun().setText(paragraph.getText());
            } else if (element instanceof XWPFTable) {
                XWPFTable table = (XWPFTable) element;
                targetDoc.createTable().getCTTbl().setTblPr(table.getCTTbl().getTblPr());
            }
        }
    }

    // 复制书签内容
    private static void copyBookmarkContent(String bookmarkName, XWPFDocument sourceDoc, XWPFDocument targetDoc) {
        for (XWPFParagraph paragraph : sourceDoc.getParagraphs()) {
            for (XWPFRun run : paragraph.getRuns()) {
                List<CTSimpleField> fields = run.getCTR().getFldSimpleList(); // 更新方法名
                for (CTSimpleField field : fields) {
                    if (field.getInstr().contains(' FORMTEXT ')) {
                        String fieldValue = field.getInstr().split("'")[1];
                        if (fieldValue.equals(bookmarkName)) {
                            targetDoc.createParagraph().createRun().setText(paragraph.getText());
                            break;
                        }
                    }
                }
            }
        }
    }
}