Apache Poi Ppt 简明教程
Apache POI PPT - PPT to Image
你可以将演示文稿转换为图像文件。以下程序展示了如何执行此操作。
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 java.util.List;
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();
List<XSLFSlide> slide = ppt.getSlides();
BufferedImage img = null;
for (int i = 0; i < slide.size(); 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.get(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();
}
}
将以上 Java 代码保存为 PpttoPNG.java ,然后从命令提示符编译并执行,如下所示 −
$javac PpttoPNG.java
$java PpttoPNG
它将编译和执行以生成以下输出 −
Image created successfully
以下快照显示作为输入提供的演示文稿 −
以下是指定位置创建的图像的快照。