word转pdf

有两种，1.要求本地安装wps的。

2.下载jar包 aspose-words-16.8.0.jar

踩坑：打包的时候

代码： word转pdf的工具类

import com.aspose.words.Document;
import com.aspose.words.License;
import com.aspose.words.SaveFormat;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.*;
import java.nio.charset.StandardCharsets;

public class WordToPdfUtil {

   /**
    * The constant LOG.
    */
   private static final Logger LOG = LoggerFactory.getLogger(WordToPdfUtil.class);

   /**
    * 获取license
    *
    * @return
    */
   private static boolean getLicense() {
      boolean result = false;
      try {
         // 凭证
         String licenseStr =
               "<License>\n" +
                     "  <Data>\n" +
                     "    <Products>\n" +
                     "      <Product>Aspose.Total for Java</Product>\n" +
                     "      <Product>Aspose.Words for Java</Product>\n" +
                     "    </Products>\n" +
                     "    <EditionType>Enterprise</EditionType>\n" +
                     "    <SubscriptionExpiry>20991231</SubscriptionExpiry>\n" +
                     "    <LicenseExpiry>20991231</LicenseExpiry>\n" +
                     "    <SerialNumber>8bfe198c-7f0c-4ef8-8ff0-acc3237bf0d7</SerialNumber>\n" +
                     "  </Data>\n" +
                     "  <Signature>sNLLKGMUdF0r8O1kKilWAGdgfs2BvJb/2Xp8p5iuDVfZXmhppo+d0Ran1P9TKdjV4ABwAgKXxJ3jcQTqE/2IRfqwnPf8itN8aFZlV3TJPYeD3yWE7IT55Gz6EijUpC7aKeoohTb4w2fpox58wWoF3SNp6sK6jDfiAUGEHYJ9pjU=</Signature>\n" +
                     "</License>";
         InputStream license = new ByteArrayInputStream(licenseStr.getBytes(StandardCharsets.UTF_8));
         License asposeLic = new License();
         asposeLic.setLicense(license);
         result = true;
      } catch (Exception e) {
         LOG.error("error:", e);
      }
      return result;
   }

   /**
    * @param pdfFilePath 生成的pdf路径
    * @param docPath     doc文件路径
    */
   public static void wordToPdf(String pdfFilePath, String docPath) {
      FileOutputStream fileOS = null;
      // 验证License
      if (!getLicense()) {
         LOG.error("验证License失败！");
         return;
      }
      try {
         InputStream in = new FileInputStream(docPath);
         Document doc = new Document(in);
         fileOS = new FileOutputStream(new File(pdfFilePath));
         // 保存转换的pdf文件
         doc.save(fileOS, SaveFormat.PDF);
      } catch (Exception e) {
         LOG.error("error:", e);
      } finally {
         try {
            if (fileOS != null) {
               fileOS.close();
            }
         } catch (IOException e) {
            LOG.error("error:", e);
         }
      }
   }

   /**
    * @param outputStream    pdf文件流
    * @param inputStream     doc文件流
    */
   public static void wordToPdf(OutputStream outputStream, InputStream inputStream) {
      // 验证License
      if (!getLicense()) {
         LOG.error("验证License失败！");
         return;
      }
      try {
         Document doc = new Document(inputStream);
         // 保存转换的pdf文件
         doc.save(outputStream, SaveFormat.PDF);
      } catch (Exception e) {
         LOG.error("error:", e);
      } finally {
         try {
            if(inputStream!=null){
               inputStream.close();
            }
         } catch (IOException e) {
            LOG.error("error:", e);
         }
      }
   }

   /**
    * @param pdfFilePath    pdf文件流
    * @param inputStream     doc文件流
    */
   public static void wordToPdf(String pdfFilePath, InputStream inputStream) {
      FileOutputStream fileOS = null;
      // 验证License
      if (!getLicense()) {
         LOG.error("验证License失败！");
         return;
      }
      try {
         Document doc = new Document(inputStream);
         fileOS = new FileOutputStream(new File(pdfFilePath));
         // 保存转换的pdf文件
         doc.save(fileOS, SaveFormat.PDF);
      } catch (Exception e) {
         LOG.error("error:", e);
      } finally {
         try {
            if (fileOS != null) {
               fileOS.close();
            }
            if(inputStream!=null){
               inputStream.close();
            }
         } catch (IOException e) {
            LOG.error("error:", e);
         }
      }
   }
}

上传代码

public R preview(MultipartFile file) {
   ByteArrayInputStream in = null;
   ByteArrayInputStream inFile = null;
   ByteArrayOutputStream baos = null;
   Map<String, Object> resultMap = new HashMap<>();
   try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
       //将word的输入流 转为pdf的输出流
      WordToPdfUtil.wordToPdf(outputStream, file.getInputStream());
      //将pdf输出流转为二进制流 然后上传这个流信息
      InputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
      String fileName = IdUtil.simpleUUID() + StrUtil.DOT + "pdf";
      resultMap = new HashMap<>(4);
      resultMap.put("bucketName", ossProperties.getBucketName());
      resultMap.put("fileName", fileName);
      String url = String.format("/%s/%s", ossProperties.getBucketName(), fileName);
      resultMap.put("url", url);
      try {
         minioTemplate.putObject(ossProperties.getBucketName(), fileName, inputStream, inputStream.available(), "application/pdf");
         // 文件管理数据记录,收集管理追踪文件
         Integer fileId = fileLog(file, fileName, url);
         resultMap.put("fileId", fileId);
      } catch (Exception e) {
         e.printStackTrace();
      }
   } catch (IOException e) {
      e.printStackTrace();
   }
   return R.ok(resultMap);
}

打包注意点

<!--${project.basedir}位置不清楚可以点上去看一下，是在引入jar报的目录的根结构处-->
<dependency>
   <groupId>com.aspose</groupId>
   <artifactId>aspose-words</artifactId>
   <version>16.8.0</version>
   <scope>system</scope>
   <systemPath>${project.basedir}/src/main/resources/aspose-words-16.8.0.jar</systemPath>
</dependency>

如果不能把jar包编入多最后的jar包中，添加一下编译插件（应该可以打包成功，因为jar包在resources中）

<plugin>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-maven-plugin</artifactId>
   <!-- 打包时会将本地jar一起打包 -->
   <configuration>
      <includeSystemScope>true</includeSystemScope>
   </configuration>
</plugin>