如何用POI将PPT的内容转换为图片

少年民仔 2015-10-20 10:33:07

我用POI提供的方法去转换ppt内容为图片时，出错了，具体代码如下：



public static void main(String[] args) throws FileNotFoundException,

        IOException {

    final String PPT_TEMPLATE = "data/test.pptx";

    float scale = 1;

    XMLSlideShow ppt = new XMLSlideShow(new FileInputStream(PPT_TEMPLATE));



    Dimension pgsize = ppt.getPageSize();

    int width = (int) (pgsize.width * scale);

    int height = (int) (pgsize.height * scale);



    XSLFSlide slide = ppt.getSlides()[5];



    BufferedImage img = new BufferedImage(width, height,

            BufferedImage.TYPE_INT_ARGB);

    Graphics2D graphics = img.createGraphics();



    // default rendering options

    graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING,

            RenderingHints.VALUE_ANTIALIAS_ON);

    graphics.setRenderingHint(RenderingHints.KEY_RENDERING,

            RenderingHints.VALUE_RENDER_QUALITY);

    graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION,

            RenderingHints.VALUE_INTERPOLATION_BICUBIC);

    graphics.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,

            RenderingHints.VALUE_FRACTIONALMETRICS_ON);



    graphics.setColor(Color.white);

    graphics.clearRect(0, 0, width, height);



    graphics.scale(scale, scale);



    // draw stuff

    slide.draw(graphics);



    // save the result

    FileOutputStream out = new FileOutputStream(new File("D:/test.png"));

    try {

        ImageIO.write(img, "png", out);

    } finally {

        out.close();

    }

    System.out.println("Job Done");

}