基于Java实现PPT到PDF的高效转换详解

<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>e-iceblue</name>
        <url>https://repo.e-iceblue.com/nexus/content/groups/public/</url>
    </repository>
</repositories>
<dependency>
    <groupId>e-iceblue</groupId>
    <artifactId>spire.presentation</artifactId>
    <version>10.10.2</version>
</dependency>

implementation 'e-iceblue:spire.presentation:10.10.2@jar'

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

public class PptToPdfSingle {
    public static void main(String[] args) {
        // 1. 定义PPT输入路径与PDF输出路径
        String pptInputPath = "D:\Documents\示例演示文稿.pptx";
        String pdfOutputPath = "D:\Documents\示例演示文稿_转换后.pdf";

        Presentation presentation = null;
        try {
            // 2. 创建Presentation对象，加载PPT文件
            presentation = new Presentation();
            presentation.loadFromFile(pptInputPath);

            // 3. 调用saveToFile方法转换为PDF，指定输出格式为FileFormat.PDF
            presentation.saveToFile(pdfOutputPath, FileFormat.PDF);

            System.out.println("PPT转PDF成功！输出路径：" + pdfOutputPath);
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("PPT转PDF失败：" + e.getMessage());
        } finally {
            // 4. 关闭Presentation对象，释放内存资源
            if (presentation != null) {
                presentation.dispose();
            }
        }
    }
}

import com.spire.presentation.Presentation;
import com.spire.presentation.FileFormat;
import java.io.File;

public class PptToPdfBatch {
    public static void main(String[] args) {
        // 1. 定义PPT文件夹路径与PDF输出文件夹路径
        String pptFolderPath = "D:\Documents\PPT文件夹";
        String pdfOutputFolder = "D:\Documents\PDF输出文件夹";

        // 2. 检查输出文件夹，不存在则创建
        File outputFolder = new File(pdfOutputFolder);
        if (!outputFolder.exists()) {
            outputFolder.mkdirs();
        }

        // 3. 遍历PPT文件夹，获取所有.ppt/.pptx文件
        File pptFolder = new File(pptFolderPath);
        File[] pptFiles = pptFolder.listFiles((dir, name) -> {
            // 过滤后缀为.ppt或.pptx的文件（不区分大小写）
            String lowercaseName = name.toLowerCase();
            return lowercaseName.endsWith(".ppt") || lowercaseName.endsWith(".pptx");
        });

        // 4. 批量转换每个PPT文件
        if (pptFiles != null && pptFiles.length > 0) {
            for (File pptFile : pptFiles) {
                convertSinglePptToPdf(pptFile.getAbsolutePath(), pdfOutputFolder);
            }
            System.out.println("批量转换完成！所有PDF已保存至：" + pdfOutputFolder);
        } else {
            System.out.println("PPT文件夹中未找到.ppt/.pptx文件！");
        }
    }

    /**
     * 单个PPT转换为PDF的工具方法
     * @param pptInputPath PPT文件绝对路径
     * @param pdfOutputFolder PDF输出文件夹路径
     */
    private static void convertSinglePptToPdf(String pptInputPath, String pdfOutputFolder) {
        Presentation presentation = null;
        try {
            // 加载PPT文件
            presentation = new Presentation();
            presentation.loadFromFile(pptInputPath);

            // 获取PPT文件名（不含后缀），作为PDF文件名
            String pptFileName = new File(pptInputPath).getName();
            String pdfFileName = pptFileName.substring(0, pptFileName.lastIndexOf(".")) + ".pdf";
            String pdfOutputPath = pdfOutputFolder + File.separator + pdfFileName;

            // 转换为PDF
            presentation.saveToFile(pdfOutputPath, FileFormat.PDF);
            System.out.println("成功转换：" + pptFileName + " → " + pdfFileName);
        } catch (Exception e) {
            System.out.println("转换失败：" + new File(pptInputPath).getName() + "，原因：" + e.getMessage());
        } finally {
            if (presentation != null) {
                presentation.dispose();
            }
        }
    }
}