Java 读取PowerPoint文档中的文本内容和图片

àì夳堔傛蜴生んèń 2024-02-19 19:34 44阅读 0赞

这篇文章介绍如何在Java应用程序中读取PowerPoint文档中的文本内容和图片。

使用组件：Free Spire.Presentation for Java

**导入****jar****文件**

在开始前，我们需要导入jar文件。[下载Free Spire.Presentation for Java][Free Spire.Presentation for Java]并解压缩，然后从lib文件夹下，导入jar包到你的Java应用程序中。

**代码示例**

读取文本内容

import com.spire.presentation.*;
    
    import java.io.FileWriter;
    
    public class ExtractText {
        public static void main(String[] args) throws Exception {
    
            //创建Presentation实例
            Presentation ppt = new Presentation();
            //加载PowerPoint 文档
            ppt.loadFromFile("Input.pptx");
    
            StringBuilder buffer = new StringBuilder();
    
            //遍历幻灯片并提取文本
            for (Object slide : ppt.getSlides()) {
                for (Object shape : ((ISlide) slide).getShapes()) {
                    if (shape instanceof IAutoShape) {
                        for (Object tp : ((IAutoShape) shape).getTextFrame().getParagraphs()) {
                            buffer.append(((ParagraphEx) tp).getText());
                        }
                    }
                }
            }
            //写入到.txt文件
            FileWriter writer = new FileWriter("ExtractText.txt");
            writer.write(buffer.toString());
            writer.flush();
            writer.close();
        }
    }

读取图片

1) 读取所有图片

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

2) 读取指定幻灯片上的图片

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();
            //Load the PowerPoint document
            ppt.loadFromFile("Images.pptx");
    
            //获取第一张幻灯片
            ISlide slide = ppt.getSlides().get(0);
    
            //遍历幻灯片上的所有形状并提取图片
            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)));
                }
            }
        }
    }

[Free Spire.Presentation for Java]: http://www.e-iceblue.cn/Downloads/Free-Spire-Presentation-JAVA.html