java word 页码

您可以使用 Apache POI 库来操作 Word 文档。以下是一个示例代码，可以在 Word 文档中添加页码：

import java.io.FileInputStream;
import java.io.FileOutputStream;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.usermodel.Range;
import org.apache.poi.hwpf.usermodel.Section;
import org.apache.poi.hwpf.usermodel.Paragraph;
import org.apache.poi.hwpf.usermodel.CharacterRun;
import org.apache.poi.hwpf.usermodel.Field;

public class AddPageNumber {
    public static void main(String[] args) throws Exception {
        FileInputStream fis = new FileInputStream("test.doc");
        HWPFDocument doc = new HWPFDocument(fis);

        Range range = doc.getRange();

        for (int s = 0; s < range.numSections(); ++s) {
            Section section = range.getSection(s);
            for (int p = 0; p < section.numParagraphs(); ++p) {
                Paragraph para = section.getParagraph(p);
                for (int r = 0; r < para.numCharacterRuns(); ++r) {
                    CharacterRun run = para.getCharacterRun(r);
                    Field field = run.getField();
                    if (field != null && field.getType() == Field.PAGE) {
                        run.setText("Page " + (s+1) + "-" + (p+1) + "-");
                    }
                }
            }
        }

        FileOutputStream fos = new FileOutputStream("test.doc");
        doc.write(fos);

        fis.close();
        fos.close();
    }
}

这个示例代码会在每一页的页脚添加页码，格式为 `Page {section}-{paragraph}-`，例如第一页的页码为 `Page 1-1-`。您可以根据自己的需求修改代码中的页码格式。