在Apache POI中更改pptx幻灯片母版中的字体

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

File pptFile = new File("presentation.pptx");
XMLSlideShow ppt = new XMLSlideShow(new FileInputStream(pptFile));

XSLFSlideMaster slideMaster = ppt.getSlideMasters().get(0);

List<XSLFTextShape> textShapes = slideMaster.getPlaceholders();
for (XSLFTextShape textShape : textShapes) {
    XSLFTextParagraph paragraph = textShape.getTextParagraphs().get(0);
    XSLFTextRun textRun = paragraph.getTextRuns().get(0);
    textRun.setFontFamily("Arial"); // 设置字体为Arial
    textRun.setFontSize(16.0); // 设置字体大小为16
}

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