这篇文章将介绍如何使用 Spire.Presentation for Java 组件插入图片到 PowerPoint 文档以及提取 PowerPoint 文档中的图片。

插入图片到 PowerPoint 文档

import com.spire.presentation.*;
import com.spire.presentation.drawing.FillFormatType;

import java.awt.geom.Rectangle2D;

public class InsertImages {
    public static void main(String[] args) throws Exception {
            //创建Presentation实例
            Presentation ppt = new Presentation();

            Rectangle2D rect = new Rectangle2D.Double(ppt.getSlideSize().getSize().getWidth() / 2 - 280, 140, 120, 120);

            //获取第一张幻灯片（创建后默认含有一张幻灯片）
            ISlide slide = ppt.getSlides().get(0);
            //插入图片到幻灯片
            IEmbedImage image = slide.getShapes().appendEmbedImage(ShapeType.RECTANGLE, "a.jpg", rect);
            image.getLine().setFillType(FillFormatType.NONE);

            //添加一张新的幻灯片
            slide = ppt.getSlides().append();
            //插入图片到幻灯片
            image = slide.getShapes().appendEmbedImage(ShapeType.RECTANGLE, "b.jpg", rect);
            image.getLine().setFillType(FillFormatType.NONE);

            //保存文档
            ppt.saveToFile("InsertImages.pptx", FileFormat.PPTX_2013);
    }
}

提取 PowerPoint文档中的图片

Spire.Presentation for Java 支持提 取PowerPoint 文档中的所有图片，也支持提取指定幻灯片中的图片。

以下示例展示了如何提取 PowerPoint 文档中的所有图片：

import com.spire.presentation.Presentation;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;

public class ExtractImages {
    public static void main(String[] args) throws Exception {
        //创建Presentation实例
        Presentation ppt = new Presentation();
        //加载PowerPoint文档
        ppt.loadFromFile("InsertImages.pptx");

        //提取文档中的所有图片
        for (int i = 0; i < ppt.getImages().getCount(); i++) {
            BufferedImage image = ppt.getImages().get(i).getImage();
            ImageIO.write(image, "PNG",  new File(String.format("presentation/" + "extractImage-%1$s.png", i)));
        }
    }
}

以下示例展示了如何提取指定幻灯片中的图片：

import com.spire.presentation.*;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;

public class ExtractImages {
    public static void main(String[] args) throws Exception {
        //创建Presentation实例
        Presentation ppt = new Presentation();
        //加载PowerPoint文档
        ppt.loadFromFile("InsertImages.pptx");

        //获取第一张幻灯片
        ISlide slide = ppt.getSlides().get(0);

        //提取图片
        for(int i = 0; i< slide.getShapes().getCount(); i++)
        {
            IShape shape = slide.getShapes().get(i);
            if(shape instanceof SlidePicture)
            {
                SlidePicture pic = (SlidePicture) shape;
                BufferedImage image = pic.getPictureFill().getPicture().getEmbedImage().getImage();
                ImageIO.write(image, "PNG",  new File(String.format("slide/" + "extractImage-%1$s.png", i)));
            }
            if(shape instanceof PictureShape)
            {
                PictureShape ps = (PictureShape) shape;
                BufferedImage image = ps.getEmbedImage().getImage();
                ImageIO.write(image, "PNG",  new File(String.format("slide/" + "extractImage-%1$s.png", i)));
            }
        }
    }
}