Java实现PPT转多种图片格式的高效方法

<repositories>
    <repository>
        <id>e-iceblue</id>
        <url>https://repo.e-iceblue.cn/repository/maven-public/</url>
    </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId>e-iceblue</groupId>
        <artifactId>spire.presentation</artifactId>
        <version>10.8.0</version> 
    </dependency>
</dependencies>

repositories {
    maven { url 'https://repo.e-iceblue.cn/repository/maven-public/' }
}
dependencies {
    implementation 'e-iceblue:spire.presentation:10.8.0'
}

import com.spire.presentation.ISlide;
import com.spire.presentation.Presentation;

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

public class ConvertPowerPointToPngOrJpg {
    public static void main(String []args) throws Exception {
        //初始化Presentation类的实例
        Presentation presentation = new Presentation();
        //加载PowerPoint文档
        presentation.loadFromFile("示例文档.pptx");

        //遍历PowerPoint文档中的所有幻灯片
        for(int i = 0; i < presentation.getSlides().getCount(); i++)
        {
            ISlide slide = presentation.getSlides().get(i);
            //将每张幻灯片另存为PNG/JPG图片
            BufferedImage image = slide.saveAsImage();
            String fileName = String.format("ToImage-%1$s.png", i);
            ImageIO.write(image, "PNG",new File(fileName));
        }

        presentation.dispose();                                                               
    }
}

import com.spire.presentation.FileFormat;
import com.spire.presentation.Presentation;

public class ConvertPowerPointToTiff {
    public static void main(String []args) throws Exception {
        //初始化Presentation类的实例
        Presentation presentation = new Presentation();
        //加载PowerPoint文档
        presentation.loadFromFile("示例文档.pptx");

        //将PowerPoint文档转换为TIFF图片
        presentation.saveToFile("toTIFF.tiff", FileFormat.TIFF);
        presentation.dispose();               
    }
}                                                              

import com.spire.presentation.Presentation;

import java.io.FileOutputStream;
import java.util.ArrayList;

public class ConvertPowerPointToSVG {
    public static void main(String[] args) throws Exception {
        // 初始化 Presentation 对象
        Presentation presentation = new Presentation();
        // 加载 PowerPoint 文档
        presentation.loadFromFile("示例文档.pptx");

        // 将 PPT 转为 SVG，每张幻灯片对应一个 SVG 文件
        ArrayList svgBytes = (ArrayList) presentation.saveToSVG();
        for (int i = 0; i < svgBytes.size(); i++) {
            byte[] bytes = (byte[]) svgBytes.get(i);
            String fileName = String.format("Slide-%d.svg", i);
            FileOutputStream stream = new FileOutputStream(fileName);
            stream.write(bytes);
            stream.close();
        }

        // 释放资源
        presentation.dispose();
    }
}