📜  Apache POI PPT-PPT到图像

📅  最后修改于: 2020-11-18 08:53:16             🧑  作者: Mango


您可以将演示文稿转换为图像文件。以下程序显示了如何进行处理。

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("pptToImage.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();    
   }
}

将上面的Java代码另存为PpttoPNG.java ,然后从命令提示符下编译并执行它,如下所示:

$javac PpttoPNG.java
$java PpttoPNG

它将编译并执行以生成以下输出-

Image created successfully

以下快照显示了作为输入给出的演示-

Presentation1

下面给出的是在指定位置创建的映像的快照。

PPT图片