Java SpringBoot将Word文档转为PDF的全流程解析

<dependency>
    <groupId>org.docx4j</groupId>
    <artifactId>docx4j</artifactId>
    <version>8.3.3</version>
</dependency>
<dependency>
    <groupId>org.docx4j</groupId>
    <artifactId>docx4j-export-fo</artifactId>
    <version>8.3.3</version>
</dependency>

import org.docx4j.Docx4J;
import org.docx4j.fonts.IdentityPlusMapper;
import org.docx4j.openpackaging.packages.WordprocessingMLPackage;
import org.docx4j.openpackaging.parts.WordprocessingML.MainDocumentPart;
import org.docx4j.pdf2HTMLEx.PdfSettings;
import org.docx4j.utils.fonts.FontUtils;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
public class WordToPdfConverter {
    public static void convert(String inputFilePath, String outputFilePath) {
        try {
            // 加载Word文档
            WordprocessingMLPackage wordMLPackage = WordprocessingMLPackage.load(new java.io.File(inputFilePath));
            // 处理字体，解决中文乱码问题
            FontUtils.setFontInfo(wordMLPackage);
            IdentityPlusMapper fontMapper = new IdentityPlusMapper();
            fontMapper.put("隶书", "LiSu");
            fontMapper.put("宋体", "SimSun");
            fontMapper.put("黑体", "SimHei");
            fontMapper.put("楷体", "KaiTi");
            wordMLPackage.setFontMapper(fontMapper);
            // 获取文档的主部分
            MainDocumentPart documentPart = wordMLPackage.getMainDocumentPart();
            // 创建PDF设置
            PdfSettings pdfSettings = new PdfSettings();
            // 设置字体嵌入，防止在其他设备上显示异常
            pdfSettings.setFontEmbeddingEnabled(true);
            // 执行转换
            OutputStream os = new FileOutputStream(new File(outputFilePath));
            Docx4J.toPDF(wordMLPackage, os, pdfSettings);
            os.close();
            System.out.println("转换成功！");
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("转换失败：" + e.getMessage());
        }
    }
}

import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import java.io.File;
import java.io.IOException;
import java.util.UUID;
@RestController
@RequestMapping("/convert")
public class WordToPdfController {
    @PostMapping
    public String convertWordToPdf(@RequestParam("file") MultipartFile file) {
        try {
            // 生成临时文件路径
            String originalFilename = file.getOriginalFilename();
            String tempFilePath = System.getProperty("java.io.tmpdir") + File.separator + UUID.randomUUID() + "_" + originalFilename;
            file.transferTo(new File(tempFilePath));
            // 生成输出PDF文件路径
            String outputFilePath = System.getProperty("java.io.tmpdir") + File.separator + UUID.randomUUID() + ".pdf";
            // 执行转换
            WordToPdfConverter.convert(tempFilePath, outputFilePath);
            // 返回下载链接或者处理逻辑
            return "转换成功，PDF路径：" + outputFilePath;
        } catch (IOException e) {
            e.printStackTrace();
            return "文件处理失败：" + e.getMessage();
        }
    }
}