Java 示例 - 将幻灯片转换为图像

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  问题描述

  如何将 PPT 的幻灯片转换为图像。
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  解决方案

  以下是将PPT的幻灯片转换为图像的程序。

  
  import java.awt.Color;
  import java.awt.Dimension;
  import java.awt.Graphics2D;
  import java.awt.geom.Rectangle2D;
  import java.awt.image.BufferedImage;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import org.apache.poi.xslf.usermodel.XMLSlideShow;
  import org.apache.poi.xslf.usermodel.XSLFSlide;
  public class PptToImage {
     public static void main(String args[]) throws IOException {
        //creating an empty presentation
        File file = new File("addingimage.pptx");
        XMLSlideShow ppt = new XMLSlideShow(new FileInputStream(file));
        //getting the dimensions and size of the slide
        Dimension pgsize = ppt.getPageSize();
        XSLFSlide[] slide = ppt.getSlides();
        BufferedImage img = null;
        for (int i = 0; i < slide.length; i++) {
           img = new BufferedImage(pgsize.width, pgsize.height,BufferedImage.TYPE_INT_RGB);
           Graphics2D graphics = img.createGraphics();
           //clear the drawing area
           graphics.setPaint(Color.white);
           graphics.fill(new Rectangle2D.Float(0, 0, pgsize.width, pgsize.height));
           
           //render
           slide[i].draw(graphics);
        }
        //creating an image file as output
        FileOutputStream out = new FileOutputStream("ppt_image.png");
        
        javax.imageio.ImageIO.write(img, "png", out);
        ppt.write(out);
        System.out.println("Image successfully created");
        out.close();
     }
  }
  

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  输入

  
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  输出