可以查看官方文檔 Apache POI官網(wǎng)

    poi-3.12.jar
    poi-ooxml-3.12.jar
    poi-ooxml-schemas-3.12.jar
    poi-scratchpad-3.12.jar
    xmlbeans-2.6.0.jar

    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi-ooxml</artifactId>
      <version>3.12</version>
    </dependency>
    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi-scratchpad</artifactId>
      <version>3.12</version>
    </dependency>

/**
   * ppt2003 文檔的轉換 后綴名為.ppt
   * @param pptFile ppt文件
   * @param imgFile 圖片將要保存的目錄（不是文件）
   * @return
   */
public static Boolean doPPT2003toImage(File pptFile,File imgFile,List<String> list) {
	try {
		FileInputStream is = new FileInputStream(pptFile);
		SlideShow ppt = new SlideShow(is);
		//及時關閉掉 輸入流
		is.close();
		Dimension pgsize = ppt.getPageSize();
		Slide[] slide = ppt.getSlides();
		for (int i = 0; i < slide.length; i++) {
			log.info("第" + i + "頁。");
			TextRun[] truns = slide[i].getTextRuns();
			for (int k = 0; k < truns.length; k++) {
				RichTextRun[] rtruns = truns[k].getRichTextRuns();
				for (int l = 0; l < rtruns.length; l++) {
					// 原有的字體索引 和 字體名字
					int index = rtruns[l].getFontIndex();
					String name = rtruns[l].getFontName();
					log.info("原有的字體索引 和 字體名字: "+index+" - "+name);
					// 重新設置 字體索引 和 字體名稱 是為了防止生成的圖片亂碼問題
					rtruns[l].setFontIndex(1);
					rtruns[l].setFontName("宋體");
				}
			}
			//根據(jù)幻燈片大小生成圖片
			BufferedImage img = new BufferedImage(pgsize.width,pgsize.height, BufferedImage.TYPE_INT_RGB);
			Graphics2D graphics = img.createGraphics();
			graphics.setPaint(Color.white);
			graphics.fill(new Rectangle2D.float(0, 0, pgsize.width,pgsize.height));
			slide[i].draw(graphics);
			// 圖片的保存位置
			String absolutePath = imgFile.getAbsolutePath()+"/"+ (i + 1) + ".jpeg";
			File jpegFile = new File(absolutePath);
			// 圖片路徑存放
			list.add((i + 1) + ".jpeg");
			// 如果圖片存在，則不再生成
			if (jpegFile.exists()) {
				continue;
			}
			// 這里設置圖片的存放路徑和圖片的格式(jpeg,png,bmp等等),注意生成文件路徑
			FileOutputStream out = new FileOutputStream(jpegFile);
			ImageIO.write(img, "jpeg", out);
			out.close();
		}
		log.error("PPT轉換成圖片 成功！");
		return true;
	}
	catch (Exception e) {
		log.error("PPT轉換成圖片 發(fā)生異常！", e);
	}
	return false;
}

/**
   * ppt2007文檔的轉換 后綴為.pptx
   * @param pptFile PPT文件
   * @param imgFile 圖片將要保存的路徑目錄（不是文件）
   * @param list 存放文件名的 list
   * @return
   */
public static Boolean doPPT2007toImage(File pptFile,File imgFile,List<String> list) {
	FileInputStream is = null ;
	try {
		is = new FileInputStream(pptFile);
		XMLSlideShow xmlSlideShow = new XMLSlideShow(is);
		is.close();
		// 獲取大小
		Dimension pgsize = xmlSlideShow.getPageSize();
		// 獲取幻燈片
		XSLFSlide[] slides = xmlSlideShow.getSlides();
		for (int i = 0 ; i < slides.length ; i++) {
			// 解決亂碼問題
			XSLFShape[] shapes = slides[i].getShapes();
			for (XSLFShape shape : shapes) {
				if (shape instanceof XSLFTextShape) {
					XSLFTextShape sh = (XSLFTextShape) shape;
					List<XSLFTextParagraph> textParagraphs = sh.getTextParagraphs();
					for (XSLFTextParagraph xslfTextParagraph : textParagraphs) {
						List<XSLFTextRun> textRuns = xslfTextParagraph.getTextRuns();
						for (XSLFTextRun xslfTextRun : textRuns) {
							xslfTextRun.setFontFamily("宋體");
						}
					}
				}
			}
			//根據(jù)幻燈片大小生成圖片
			BufferedImage img = new BufferedImage(pgsize.width,pgsize.height, BufferedImage.TYPE_INT_RGB);
			Graphics2D graphics = img.createGraphics();
			graphics.setPaint(Color.white);
			graphics.fill(new Rectangle2D.float(0, 0, pgsize.width,pgsize.height));
			// 最核心的代碼
			slides[i].draw(graphics);
			//圖片將要存放的路徑
			String absolutePath = imgFile.getAbsolutePath()+"/"+ (i + 1) + ".jpeg";
			File jpegFile = new File(absolutePath);
			// 圖片路徑存放
			list.add((i + 1) + ".jpeg");
			//如果圖片存在，則不再生成
			if (jpegFile.exists()) {
				continue;
			}
			// 這里設置圖片的存放路徑和圖片的格式(jpeg,png,bmp等等),注意生成文件路徑
			FileOutputStream out = new FileOutputStream(jpegFile);
			// 寫入到圖片中去
			ImageIO.write(img, "jpeg", out);
			out.close();
		}
		log.error("PPT轉換成圖片 成功！");
		return true;
	}
	catch (Exception e) {
		log.error("PPT轉換成圖片 發(fā)生異常！", e);
	}
	return false;
}

org.apache.poi.poifs.filesystem.OfficeXmlFileException: The supplied data appears to be in the Office 2007+ XML. You are calling the part of POI that deals with OLE2 Office Documents. You need to call a different part of POI to process this data (eg XSSF instead of HSSF)

// 最核心的代碼
slides[i].draw(graphics);