引入aspose包
手动更新本地mvn仓库
java
mvn install:install-file -Dfile=C:\aspose-cells-22.9.jar -DgroupId=aspose -DartifactId=aspose-cells -Dversion=22.9 -Dpackaging=jar
mvn install:install-file -Dfile=C:\aspose-pdf-22.9.jar -DgroupId=aspose -DartifactId=aspose-pdf -Dversion=22.9 -Dpackaging=jar
java
<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-cells</artifactId>
<version>22.9</version>
</dependency>
<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-pdf</artifactId>
<version>22.9</version>
</dependency>
<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-words</artifactId>
<version>23.1</version>
</dependency>配置pom文件，引入依赖
设置许可证，简单实现转换方法：
java
/**
* 许可证字符串
*/
private static final String LICENSE = "<License>" +
"<Data>" +
"<Products><Product>Aspose.Total for Java</Product><Product>Aspose.Words for Java</Product></Products>" +
"<EditionType>Enterprise</EditionType>" +
"<SubscriptionExpiry>20991231</SubscriptionExpiry>" +
"<LicenseExpiry>20991231</LicenseExpiry>" +
"<SerialNumber>8bfe198c-7f0c-4ef8-8ff0-acc3237bf0d7</SerialNumber>" +
"</Data>" +
"<Signature>sNLLKGMUdF0r8O1kKilWAGdgfs2BvJb/2Xp8p5iuDVfZXmhppo+d0Ran1P9TKdjV4ABwAgKXxJ3jcQTqE/2IRfqwnPf8itN8aFZlV3TJPYeD3yWE7IT55Gz6EijUpC7aKeoohTb4w2fpox58wWoF3SNp6sK6jDfiAUGEHYJ9pjU=</Signature>" +
"</License>";
/**
* 设置 license 去除水印
*/
private static void setLicense() {
ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(LICENSE.getBytes());
License license = new License();
license.setLicense(byteArrayInputStream);
}
java
/**
* 直接在内存中将Excel字节数组转换为PDF字节数组
*
* @param excelBytes excelBytes
* @return byte[]
* @throws Exception
*/
public static byte[] convertExcelToPdf(byte[] excelBytes) throws Exception {
// 确保已设置Aspose许可证
setLicense();
try (InputStream is = new ByteArrayInputStream(excelBytes);
ByteArrayOutputStream pdfOut = new ByteArrayOutputStream()) {
// 手动创建和管理 Aspose Workbook
Workbook workbook = null;
try {
workbook = new Workbook(is);
PdfSaveOptions pdfSaveOptions = new PdfSaveOptions();
pdfSaveOptions.setOnePagePerSheet(true);
for (int i = 0; i < workbook.getWorksheets().getCount(); i++) {
workbook.getWorksheets().get(i).setVisible(true);
}
workbook.save(pdfOut, pdfSaveOptions);
return pdfOut.toByteArray();
} finally {
// 手动释放 Aspose Workbook 资源
if (workbook != null) {
workbook.dispose();
}
}
}
}
java
/**
* 将 Excel 文件转换为 Word 文档（通过PDF中间格式）
*
* @param excelBytes Excel文件的字节数组
* @return 生成的Word文档字节数组
* @throws Exception 转换过程中可能抛出的异常
*/
public static byte[] convertExcelToWordViaPdf(byte[] excelBytes) throws Exception {
// 确保已设置Aspose许可证
setLicense();
setLicensePdf();
Workbook workbook = null;
try {
// 第一步：Excel 转 PDF
byte[] pdfBytes;
try (InputStream is = new ByteArrayInputStream(excelBytes);
ByteArrayOutputStream pdfOut = new ByteArrayOutputStream()) {
workbook = new Workbook(is);
// 设置PDF保存选项
PdfSaveOptions pdfSaveOptions = new PdfSaveOptions();
// 不强制每页一个工作表
pdfSaveOptions.setOnePagePerSheet(false);
// 所有列显示在一页上
pdfSaveOptions.setAllColumnsInOnePagePerSheet(true);
// 保存为PDF格式
workbook.save(pdfOut, pdfSaveOptions);
pdfBytes = pdfOut.toByteArray();
} finally {
if (workbook != null) {
workbook.dispose();
}
}
log.info("Excel 转 PDF 成功");
// 第二步：PDF 转 Word（使用aspose-words处理PDF）
byte[] wordBytes;
try (InputStream pdfInputStream = new ByteArrayInputStream(pdfBytes);
ByteArrayOutputStream wordOut = new ByteArrayOutputStream()) {
// 使用Aspose.PDF加载PDF并转换为Word
com.aspose.pdf.Document pdfDocument = new com.aspose.pdf.Document(pdfInputStream);
// 保存为Word格式
pdfDocument.save(wordOut, com.aspose.pdf.SaveFormat.DocX);
wordBytes = wordOut.toByteArray();
// 释放资源
pdfDocument.dispose();
}
log.info("Excel 转 PDF 转 Word 成功");
return wordBytes;
} catch (Exception e) {
throw new Exception("Excel转Word失败: " + e.getMessage(), e);
}
}
/**
* 将Excel字节数组转换为Word文档字节数组
*
* @param excelBytes Excel文件的字节数组
* @return Word文档的字节数组
* @throws Exception 转换过程中可能抛出的异常
*/
public static byte[] excelToWord(byte[] excelBytes) throws Exception {
// 确保已设置Aspose许可证
setLicense();
// 从字节数组加载Excel工作簿
Workbook workbook = new Workbook(new ByteArrayInputStream(excelBytes));
// 创建DOCX保存选项
DocxSaveOptions options = new DocxSaveOptions();
options.setClearData(true);
options.setCreateDirectory(true);
options.setMergeAreas(true);
// 将Excel保存为Word字节数组
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
workbook.save(outputStream, options);
return outputStream.toByteArray();
}修改依赖groupId，不再需要手动更新本地mvn仓库
java
<dependency>
<groupId>com.luhuiguo</groupId>
<artifactId>aspose-cells</artifactId>
<version>23.1</version>
</dependency>
<dependency>
<groupId>com.luhuiguo</groupId>
<artifactId>aspose-pdf</artifactId>
<version>22.9</version>
</dependency>
<dependency>
<groupId>com.luhuiguo</groupId>
<artifactId>aspose-words</artifactId>
<version>23.1</version>
</dependency>其他问题：ContentType
不能重复设置response.setContentType 会导致前端异常
java
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
if ("pdf".equals(type)) {
response.setContentType("application/pdf");
}浏览器无法正确识别响应内容类型：第一次设置为 Exce l，第二次设置为 PDF ，浏览器可能因为前后不一致而报错。
响应头冲突：部分 Web 容器（如 Tomcat）可能会对重复设置的头部进行处理，但有些前端库或代理服务器（如 Nginx、CDN）可能不接受这种行为，导致连接中断。
前端报错 network error 或 network not connected：这通常是由于响应头异常导致浏览器或前端请求库（如 axios）无法正常处理响应，从而中断连接。