Java实现一键将Word文档转为PDF的两种方法

<dependencies>
    <!-- Apache POI 处理 Word 文档 -->
    <dependency>
        <groupId>org.apache.poi</groupId>
        <artifactId>poi-ooxml</artifactId>
        <version>5.2.3</version>
    </dependency>
    <!-- iText 生成 PDF 文档 -->
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>itextpdf</artifactId>
        <version>5.5.13.3</version>
    </dependency>
</dependencies>

import com.itextpdf.text.*;
import com.itextpdf.text.pdf.PdfWriter;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;

import java.io.*;

public class WordToPdfWithPOI {
    public static void main(String[] args) {
        try {
            // 读取 Word 文档
            FileInputStream fis = new FileInputStream("input.docx");
            XWPFDocument document = new XWPFDocument(fis);

            // 创建 PDF 文档
            Document pdfDoc = new Document();
            PdfWriter.getInstance(pdfDoc, new FileOutputStream("output.pdf"));
            pdfDoc.open();

            // 遍历 Word 文档的段落
            for (XWPFParagraph paragraph : document.getParagraphs()) {
                StringBuilder text = new StringBuilder();
                // 遍历段落中的文本运行对象
                for (XWPFRun run : paragraph.getRuns()) {
                    text.append(run.getText(0));
                }
                // 将段落文本添加到 PDF 文档中
                Paragraph pdfParagraph = new Paragraph(text.toString());
                pdfDoc.add(pdfParagraph);
            }

            // 关闭文档和流
            pdfDoc.close();
            document.close();
            fis.close();

            System.out.println("Word 转 PDF 成功！");
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("Word 转 PDF 失败：" + e.getMessage());
        }
    }
}

<dependencies>
    <dependency>
        <groupId>org.docx4j</groupId>
        <artifactId>docx4j-JAXB-Internal</artifactId>
        <version>11.4.9</version>
    </dependency>
    <dependency>
        <groupId>org.docx4j</groupId>
        <artifactId>docx4j-JAXB-ReferenceImpl</artifactId>
        <version>11.4.9</version>
    </dependency>
    <dependency>
        <groupId>org.docx4j</groupId>
        <artifactId>docx4j</artifactId>
        <version>11.4.9</version>
    </dependency>
    <dependency>
        <groupId>org.docx4j</groupId>
        <artifactId>docx4j-export-fo</artifactId>
        <version>11.4.9</version>
    </dependency>
</dependencies>

import org.docx4j.Docx4J;
import org.docx4j.convert.out.FOSettings;
import org.docx4j.openpackaging.packages.WordprocessingMLPackage;

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;

public class WordToPdfWithDocx4J {
    public static void main(String[] args) {
        try {
            // 加载 Word 文档
            WordprocessingMLPackage wordMLPackage = WordprocessingMLPackage.load(new File("input.docx"));

            // 创建 FOSettings 对象
            FOSettings foSettings = Docx4J.createFOSettings();
            foSettings.setWmlPackage(wordMLPackage);

            // 创建输出流
            OutputStream os = new FileOutputStream(new File("output.pdf"));

            // 转换并保存为 PDF
            Docx4J.toPDF(foSettings, os, Docx4J.FLAG_EXPORT_PREFER_XSL);

            // 关闭输出流
            os.close();

            System.out.println("Word 转 PDF 成功！");
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("Word 转 PDF 失败：" + e.getMessage());
        }
    }
}