1. 引入依赖

<!-- https://mvnrepository.com/artifact/com.aspose/aspose-words -->
<dependency><groupId>com.aspose</groupId><artifactId>aspose-words</artifactId><version>18.2.0</version>
</dependency>

jar下载链接：https://pan.baidu.com/s/1203Xn9JgJ1tG6cWPkythAA?pwd=rea4
提取码：rea4

2. InputStream转字节数组,并关闭流

byte[] docBytes = FileCopyUtils.copyToByteArray(docInputStream);

3. 使用ByteArrayOutputStream接收docx文件流

try (ByteArrayOutputStream os = new ByteArrayOutputStream();InputStream sbs = new ByteArrayInputStream(arrays)) {com.aspose.words.Document doc = new com.aspose.words.Document(sbs);doc.save(os, SaveFormat.DOCX);

4.字节数组转InputStream

new ByteArrayInputStream(docxBytes)

5. 完整代码

    /*** doc转为docx* @param docInputStream* @return* @throws IOException*/public static InputStream convertDocIs2DocxIs(InputStream docInputStream) throws IOException {byte[] docBytes = FileCopyUtils.copyToByteArray(docInputStream);byte[] docxBytes = convertDocStream2docxStream(docBytes);return new ByteArrayInputStream(docxBytes);}// 将doc字节数组转换为docx字节数组public static byte[] convertDocStream2docxStream(byte[] arrays) {byte[] docxBytes = new byte[1];if (arrays != null && arrays.length > 0) {try (ByteArrayOutputStream os = new ByteArrayOutputStream();InputStream sbs = new ByteArrayInputStream(arrays)) {com.aspose.words.Document doc = new com.aspose.words.Document(sbs);doc.save(os, SaveFormat.DOCX);docxBytes = os.toByteArray();} catch (Exception e) {System.out.println("出错啦");}}return docxBytes;}