java word工具类（word转pdf）

import com.documents4j.api.DocumentType;
import com.documents4j.api.IConverter;
import com.documents4j.job.LocalConverter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.*;
import java.util.concurrent.TimeUnit;

/**
 * 处理Word工具类
 *
 * @author king
 * @since 2021-03-12 10:32
 */
public class WordUtil {

    private static final Logger logger = LoggerFactory.getLogger(WordUtil.class);

    private static final String FILE_SUFFIX = ".pdf";

    private static final IConverter converter = LocalConverter.builder()
            .workerPool(5, 10, 2, TimeUnit.SECONDS)
            .processTimeout(5, TimeUnit.SECONDS)
            .build();

    /**
     * word转pdf方法
     *
     * @param docxInputStream word文件流
     * @param localPath       资源存储路径
     * @return
     */
    public static String wordToPdf(InputStream docxInputStream, String localPath, String fileName) {
        // 拼接后的文件名
        fileName = fileName + FILE_SUFFIX;
        String path = localPath + File.separator + fileName;
        //pdf文件的路径
        File outputFile = new File(path);
        try (OutputStream outputStream = new FileOutputStream(outputFile)) {
//            IConverter converter = LocalConverter.builder().build();
            converter.convert(docxInputStream).as(DocumentType.DOCX).to(outputStream).as(DocumentType.PDF).execute();
        } catch (IOException e) {
            logger.error("word转pdf出现异常：{}：{}", e.getMessage(), e);
        }
        return path;

    }

    /**
     * word转pdf方法
     *
     * @param wordPath  word存放路径
     * @param localPath 资源存储路径
     * @return
     */
    public static String wordToPdf(String wordPath, String localPath, String fileName) {
        //word的路径
        File inputWord = new File(wordPath);
        // 拼接后的文件名
        fileName = fileName + FILE_SUFFIX;
        String path = localPath + File.separator + fileName;
        //pdf文件的路径
        File outputFile = new File(path);
        try (InputStream docxInputStream = new FileInputStream(inputWord);
             OutputStream outputStream = new FileOutputStream(outputFile)) {
            IConverter converter = LocalConverter.builder().build();
            converter.convert(docxInputStream).as(DocumentType.DOCX).to(outputStream).as(DocumentType.PDF).execute();
            converter.kill();
        } catch (IOException e) {
            logger.error("word转pdf出现异常：{}：{}", e.getMessage(), e);
        }
        return path;

    }
}

示例

通过将已准备好的word模板文件，进行数据填充（这里用的是easypoi），然后将替换后的word文件转为pdf文件

/**
     * Document key
     */
    public static final String PROPERTY_KEY = "javax.xml.parsers.DocumentBuilderFactory";

    /**
     * Document value
     */
    public static final String PROPERTY_VALUE = "com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl";

System.setProperty(PROPERTY_KEY, PROPERTY_VALUE);
 // 替换word模板中的数据
 byte[] wordBytes = replaceDocxData(filePath, mapObject);
  // 将二进制数组转换成io流
  try (InputStream inputStream = new ByteArrayInputStream(wordBytes)) {
     // word转pdf
      String toPdfPath = WordUtil.wordToPdf(inputStream, this.getWordTempPath(), fileName);
            if (StringUtils.isNotBlank(toPdfPath)) {
                try (InputStream pdfInputStream = new FileInputStream(new File(toPdfPath))) {
                    body = IOUtils.toByteArray(pdfInputStream);
                }
            }
        }

/**
     * 替换word模板中的数据
     *
     * @param filePath 源word模板路径 // * @param toPath word模板替换后存储路径
     * @param map      模板内容
     */
    private byte[] replaceDocxData(String filePath, Map<String, Object> map) throws FileNotFoundException {
        // 控制处理，防止因空数据导致数据不替换
        if (map != null) {
            for (Entry<String, Object> entry : map.entrySet()) {
                if (ObjectUtils.isEmpty(entry.getValue())) {
                    map.put(entry.getKey(), " ");
                }
            }
        }
        File file = new File(filePath);
        byte[] doc = new byte[0];
        // 文件不存在返回错误信息
        if (!file.exists() || !file.isFile()) {
            throw new FileNotFoundException();
        }
        try {
            doc = exportWord(filePath, map);
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
        }
        return doc;
    }

    public static byte[] exportWord(String templateWordPath, Map<String, Object> dataMap) throws Exception {
        XWPFDocument document = WordExportUtil.exportWord07(templateWordPath, dataMap);
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        document.write(bos);
        return bos.toByteArray();
    }

easypoi maven

<dependency>
     <groupId>cn.afterturn</groupId>
     <artifactId>easypoi-spring-boot-starter</artifactId>
     <version>4.2.0</version>
 </dependency>