如何使用JAVA Apache POI为每张powerpoint幻灯片的背景设置不同的图像？

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>4.1.2</version>
</dependency>

XMLSlideShow ppt = new XMLSlideShow();

List<XSLFSlide> slides = ppt.getSlides();

for (int i = 0; i < slides.size(); i++) {
    XSLFSlide slide = slides.get(i);
    
    // 创建背景填充对象
    XSLFPictureData pictureData = ppt.addPicture(new File("image" + i + ".jpg"), PictureData.PictureType.JPEG);
    XSLFPictureShape picture = slide.createBackgroundPicture(pictureData);
    
    // 设置背景填充方式为拉伸
    picture.setAnchor(new Rectangle2D.Double(0, 0, slide.getSlideShow().getPageSize().getWidth(), slide.getSlideShow().getPageSize().getHeight()));
    picture.setPictureFill(PictureFill.PictureFillType.STRETCH);
}

FileOutputStream out = new FileOutputStream("output.pptx");
ppt.write(out);
out.close();

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

import java.awt.geom.Rectangle2D;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;

public class PowerPointBackgroundExample {
    public static void main(String[] args) throws IOException {
        // 创建PPT文档对象
        XMLSlideShow ppt = new XMLSlideShow();

        // 获取幻灯片列表
        List<XSLFSlide> slides = ppt.getSlides();

        // 设置每张幻灯片的背景图像
        for (int i = 0; i < slides.size(); i++) {
            XSLFSlide slide = slides.get(i);

            // 创建背景填充对象
            XSLFPictureData pictureData = ppt.addPicture(new File("image" + i + ".jpg"), PictureData.PictureType.JPEG);
            XSLFPictureShape picture = slide.createBackgroundPicture(pictureData);

            // 设置背景填充方式为拉伸
            picture.setAnchor(new Rectangle2D.Double(0, 0, slide.getSlideShow().getPageSize().getWidth(), slide.getSlideShow().getPageSize().getHeight()));
            picture.setPictureFill(PictureFill.PictureFillType.STRETCH);
        }

        // 保存PPT文档
        FileOutputStream out = new FileOutputStream("output.pptx");
        ppt.write(out);
        out.close();
    }
}