1. 工具类 AsposeUtil

@Component
@Slf4j
public class AsposeUtil {private static final String[] WORD = {"doc", "docx", "wps", "wpt", "txt"};private static final String[] EXCEL = {"xls", "xlsx", "et", "xlsm"};private static final String[] PPT = {"ppt", "pptx"};private static final String[] PDF = {"pdf"};private static final String[] IMG = {"bmp", "jpg", "png", "tif", "gif", "pcx", "tga", "exif", "fpx", "svg", "psd", "cdr", "pcd", "dxf", "ufo", "eps", "ai", "raw", "WMF", "webp", "avif", "apng"};private static final String TYPE_UNSUPPORT = "不支持的格式";private static final String TYPE_WORD = "TYPE_WORD";private static final String TYPE_EXCEL = "TYPE_EXCEL";private static final String TYPE_PPT = "TYPE_PPT";private static final String TYPE_PDF = "TYPE_PDF";private static final String TYPE_IMG = "TYPE_IMG";@AutowiredOssUtil ossUtil;private boolean judgeLicense() {boolean result = false;try {//          InputStream is = AsposeUtil.class.getClassLoader().getResourceAsStream("license.xml");String license ="<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 is = new ByteArrayInputStream(license.getBytes("UTF-8"));License aposeLic = new License();aposeLic.setLicense(is);result = true;} catch (Exception e) {log.error("Aspose License Error,error:{}",e);}return result;}/*** 根据文件名判断文件类型** @return*/private String getType(String fileName) {String suffix = fileName.substring(fileName.lastIndexOf(".") + 1); // 后缀if (CollUtil.contains(Arrays.asList(WORD), suffix)) {return TYPE_WORD;} else if (CollUtil.contains(Arrays.asList(EXCEL), suffix)) {return TYPE_EXCEL;} else if (CollUtil.contains(Arrays.asList(PPT), suffix)) {return TYPE_PPT;} else if (CollUtil.contains(Arrays.asList(PDF), suffix)) {return TYPE_PDF;} else if (CollUtil.contains(Arrays.asList(IMG), suffix)) {return TYPE_IMG;} else {return TYPE_UNSUPPORT;}}/*** 文件转化pdf** @param fileName 传入的文件名称* @param addr     传入的文件地址* @return 转换后的pdf地址 或 格式不支持预览*/public String toPdf(String fileName, String addr) throws Exception {if (!judgeLicense()) {throw new BizException(BuErrorEnum.ASPOSE_LISENSE_PROBLEM.getErrCode(), BuErrorEnum.ASPOSE_LISENSE_PROBLEM.getErrMsg());}String type = getType(fileName);switch (type) {case TYPE_UNSUPPORT:return TYPE_UNSUPPORT;case TYPE_PDF:return addr;case TYPE_IMG:return addr;default:break;}InputStream in = URLUtil.getStream(URLUtil.url(addr)); // 下载文件ByteArrayOutputStream tmp = new ByteArrayOutputStream();switch (type) {case TYPE_WORD:tmp = wordToPdfStream(in);break;case TYPE_EXCEL:tmp = excelToPdfStream(in);break;case TYPE_PPT:tmp = pptToPdfStream(in);break;default:break;}PdfMultipartFile pdfMultipartFile = new PdfMultipartFile(fileName, new ByteArrayInputStream(tmp.toByteArray()));return ossUtil.uploadFile(pdfMultipartFile);}private ByteArrayOutputStream wordToPdfStream(InputStream in) throws Exception {Document doc = new Document(in);ByteArrayOutputStream dstStream = new ByteArrayOutputStream();doc.save(dstStream, com.aspose.words.SaveFormat.PDF);return dstStream;}private ByteArrayOutputStream excelToPdfStream(InputStream in) throws Exception {Workbook excel = new Workbook (in);ByteArrayOutputStream dstStream = new ByteArrayOutputStream();excel.save(dstStream, com.aspose.cells.SaveFormat.PDF);return dstStream;}private ByteArrayOutputStream pptToPdfStream(InputStream in) throws Exception {Presentation ppt = new Presentation (in);ByteArrayOutputStream dstStream = new ByteArrayOutputStream();ppt.save(dstStream, SaveFormat.Pdf);return dstStream;}
}

public class PdfMultipartFile implements MultipartFile {private final String name;private final String originalFilename;@Nullableprivate final String contentType;private final byte[] content;public PdfMultipartFile(String name, @Nullable byte[] content) {this(name, "", null, content);}public PdfMultipartFile(String name, InputStream contentStream) throws IOException {this(name, "", null, FileCopyUtils.copyToByteArray(contentStream));}public PdfMultipartFile(String name, @Nullable String originalFilename, @Nullable String contentType, @Nullable byte[] content) {Assert.hasLength(converName(name), "Name must not be empty");this.name = converName(name);this.originalFilename = (originalFilename != null ? originalFilename : "");this.contentType = contentType;this.content = (content != null ? content : new byte[0]);}public PdfMultipartFile(String name, @Nullable String originalFilename, @Nullable String contentType, InputStream contentStream)throws IOException {this(name, originalFilename, contentType, FileCopyUtils.copyToByteArray(contentStream));}private String converName(String name) {int index = name.lastIndexOf(".");if (index > 0) {String suffix = name.substring(index).toLowerCase();return name.replace(suffix, ".pdf");}return name + ".pdf";}@Overridepublic String getName() {return this.name;}@Override@NonNullpublic String getOriginalFilename() {return this.originalFilename == null || this.originalFilename.equals("") ? this.name : this.originalFilename;}@Override@Nullablepublic String getContentType() {return this.contentType;}@Overridepublic boolean isEmpty() {return (this.content.length == 0);}@Overridepublic long getSize() {return this.content.length;}@Overridepublic byte[] getBytes() throws IOException {return this.content;}@Overridepublic InputStream getInputStream() throws IOException {return new ByteArrayInputStream(this.content);}@Overridepublic void transferTo(File dest) throws IOException, IllegalStateException {FileCopyUtils.copy(this.content, dest);}}

2. license文件

<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>

3. jar包

4. 本地pom引入

<!--aspose start--><dependency><groupId>com.aspose</groupId><artifactId>slides</artifactId><version>15.9.0</version><scope>system</scope><systemPath>${project.basedir}/lib/aspose.slides-15.9.0.jar</systemPath></dependency><dependency><groupId>aspose</groupId><artifactId>cells</artifactId><version>8.5.2</version><scope>system</scope><systemPath>${project.basedir}/lib/aspose-cells-8.5.2.jar</systemPath></dependency><dependency><groupId>aspose</groupId><artifactId>words</artifactId><version>16.8.0</version><scope>system</scope><systemPath>${project.basedir}/lib/aspose-words-16.8.0-jdk16.jar</systemPath></dependency><!--aspose end-->

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Aspose实现word、excel、ppt转pdf

1. 工具类 AsposeUtil

2. license文件

3. jar包

4. 本地pom引入

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