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java使用poi-tl模版+vform自定义表单生成word，使用LibreOffice导出为pdf，批量下载为压缩文件

news 2025/11/11 9:02:26

java使用poi-tl模版+vform自定义表单生成word，使用LibreOffice导出为pdf，批量下载为压缩文件。

@Overridepublic void exportMeetingAll(Long id, HttpServletResponse response) {TbProjectStartHold tbProjectStartHold = selectTbProjectStartHoldById(id, null);TbProjectStart tbProjectStart = tbProjectStartMapper.selectTbProjectStartById(id);//查询伦理的项目名称ProjectInitiation initiation = projectInitiationService.findById(tbProjectStartHold.getProjectInitiationId(), null);String fileStr=initiation.getAcceptanceNumber().replace(" ", "")+ "_启动会文件_" + DateUtils.dateTimeNow()+ ".zip";// 设置响应头response.setContentType("application/zip");String fileName = URLEncoder.encode(fileStr, StandardCharsets.UTF_8);response.setHeader("Content-Disposition", "attachment;filename=" + fileName);// 创建ZIP输出流try (ZipArchiveOutputStream zipOut = new ZipArchiveOutputStream(response.getOutputStream());BufferedOutputStream bos = new BufferedOutputStream(zipOut)) {zipOut.setEncoding("UTF-8"); // 设置编码// 导出启动会预约确认单projectStartService.exportAppointmentForZip(tbProjectStart,initiation,zipOut);//导出会议议程exportMeetingAgendaPdfForZip(tbProjectStartHold,initiation,zipOut);//导出启动承诺函exportMeetingStartForZip(tbProjectStartHold,initiation,zipOut);//导出会议记录exportMeetingRecordForZip(tbProjectStartHold,initiation,zipOut);//导出会议照片List<SysFileData> meetiongPhoto=tbProjectStartHold.getMeetingPhoto();if(meetiongPhoto!=null){Map<String,String> map=new HashMap<>();meetiongPhoto.forEach(e->{map.put(e.getFileUrl(),"会议照片/"+e.getFileName());});ImageExport.batchAddImagesToZip(zipOut,map,resourceLoader);}// 刷新流，确保所有数据写入bos.flush();} catch (Exception e) {e.printStackTrace();throw new RuntimeException("打包下载失败：" + e.getMessage());}}

  @Overridepublic void exportMeetingStartForZip(TbProjectStartHold tbProjectStartHold,ProjectInitiation initiation, ZipArchiveOutputStream zipOut) {Map<String, Object> data=new HashMap<>();data.put("projectName",Optional.ofNullable(tbProjectStartHold.getProjectName()).orElse(""));data.put("meetingDate","");if(tbProjectStartHold.getMeetingDate()!=null){data.put("meetingDate",DateUtils.parseDateToStr("yyyy-MM-dd",tbProjectStartHold.getMeetingDate()));}//模板选择String url = "classpath:templates/start_chengnuohan.docx";String fileName=initiation.getAcceptanceNumber().replace(" ", "")+ "_项目启动承诺函_" + DateUtils.dateTimeNow();//响应返回 pdf 文件WordToPdf.generatePdfForZip(zipOut,url,data,resourceLoader,libreoffice,fileName + ".pdf");}

/*** 生成pdf 在压缩包内* @param zipOut* @param url* @param data* @param resourceLoader* @param libreoffice* @param pdfFileName*/public static void generatePdfForZip(ZipArchiveOutputStream zipOut, String url, Map<String, Object> data,ResourceLoader resourceLoader, String libreoffice, String pdfFileName) {Configure config = Configure.builder().build();generatePdfForZip(config, zipOut, url, data, resourceLoader, libreoffice, pdfFileName);}/*** 生成pdf 在压缩包内* @param zipOut* @param url* @param data* @param resourceLoader* @param libreoffice* @param pdfFileName*/public static void generatePdfForZip(Configure config,ZipArchiveOutputStream zipOut, String url, Map<String, Object> data,ResourceLoader resourceLoader, String libreoffice, String pdfFileName) {// ========== 2. 生成临时 Word 文件（关键修改：不再直接写入响应） ==========// 临时文件目录（跨平台兼容：Windows是C:\Users\XXX\AppData\Local\Temp，Linux是/tmp）System.out.println("****************");;System.out.println(System.getProperty("java.io.tmpdir"));File tempDir = new File(System.getProperty("java.io.tmpdir"));// 生成唯一文件名（避免并发冲突）String uniqueName = UUID.randomUUID().toString().replace("-", "");File tempWordFile = new File(tempDir, uniqueName + ".docx");File tempPdfFile = new File(tempDir, uniqueName + ".pdf");// 标记是否生成成功（用于最终清理临时文件）boolean generateSuccess = false;try {// 2.1 用 poi-tl 生成 Word 到临时文件Resource resource = resourceLoader.getResource(url);try (InputStream inputStream = resource.getInputStream();OutputStream wordOut = new FileOutputStream(tempWordFile)) {XWPFTemplate template = XWPFTemplate.compile(inputStream, config).render(data);template.write(wordOut);PoitlIOUtils.closeQuietly(template); // 关闭模板资源}// ========== 3. 调用 LibreOffice 转换 Word → PDF（核心步骤） ==========boolean convertSuccess = convertWordToPdfByLibreOffice(libreoffice,tempWordFile, tempPdfFile);if (!convertSuccess || !tempPdfFile.exists() || tempPdfFile.length() == 0) {throw new RuntimeException("Word 转 PDF 失败，生成的 PDF 文件为空");}// 3. 创建ZIP条目（指定PDF在压缩包中的名称/路径）// 支持子目录格式，例如："2024年报表/销售数据.pdf"ZipArchiveEntry pdfEntry = new ZipArchiveEntry(pdfFileName);// 设置文件大小（优化ZIP压缩效率）pdfEntry.setSize(tempPdfFile.length());zipOut.putArchiveEntry(pdfEntry);// 4. 将PDF文件写入ZIP条目try (InputStream pdfIn = new FileInputStream(tempPdfFile);BufferedInputStream bis = new BufferedInputStream(pdfIn)) {byte[] buffer = new byte[1024 * 8];int len;while ((len = bis.read(buffer)) != -1) {zipOut.write(buffer, 0, len);}}// 5. 关闭当前ZIP条目（必须调用，否则后续条目无法添加）zipOut.closeArchiveEntry();// 刷新ZIP流，确保数据写入（外部最终需调用zipOut.close()）zipOut.flush();generateSuccess = true;System.out.println("PDF文件[" + pdfFileName + "]已成功添加到ZIP包");} catch (Exception e) {e.printStackTrace();throw new RuntimeException("导出 PDF 失败：" + e.getMessage(), e);} finally {// ========== 5. 清理临时文件（关键：避免磁盘残留） ==========// 6. 清理临时文件（异步延迟删除，确保ZIP写入完成）boolean finalGenerateSuccess = generateSuccess;new Thread(() -> {try {// 延迟3秒删除（如果生成失败，缩短延迟）TimeUnit.SECONDS.sleep(finalGenerateSuccess ? 3 : 1);// 静默删除，失败不抛异常（避免影响主流程）FileUtils.deleteQuietly(tempWordFile);FileUtils.deleteQuietly(tempPdfFile);System.out.println("临时文件清理完成：" + tempWordFile.getName() + "、" + tempPdfFile.getName());} catch (InterruptedException ignored) {Thread.currentThread().interrupt();}}).start();}}

图片处理


public class ImageExport {/*** 单个图片写入ZIP流（支持本地文件、classpath资源、网络图片）** @param zipOut      ZIP输出流* @param imageSource 图片来源（支持3种格式：1.本地路径如D:/img/1.jpg 2.classpath路径如classpath:/images/2.png 3.网络URL如https://xxx.com/3.jpg）* @param zipImageName ZIP内图片文件名（支持子目录：如images/产品图.png）* @param resourceLoader Spring资源加载器（用于读取classpath图片）* @throws Exception 图片读取或写入异常*/public static void addImageToZip(ZipArchiveOutputStream zipOut, String imageSource, String zipImageName,ResourceLoader resourceLoader) throws Exception {InputStream imageIn = null;try {// 适配不同图片来源if (imageSource.startsWith("classpath:")) {// 读取classpath下的图片Resource resource = resourceLoader.getResource(imageSource);imageIn = resource.getInputStream();} else if (imageSource.startsWith("http://") || imageSource.startsWith("https://")) {// 读取网络图片imageIn = new java.net.URL(imageSource).openStream();} else {// 读取本地文件图片String localPath = RuoYiConfig.getProfile();String downloadPath = localPath + StringUtils.substringAfter(imageSource, Constants.RESOURCE_PREFIX);File imageFile = new File(downloadPath);if (!imageFile.exists()) {throw new FileNotFoundException("本地图片不存在：" + imageSource);}imageIn = new FileInputStream(imageFile);}// 图片写入ZIPaddStreamToZip(zipOut, imageIn, zipImageName);System.out.println("图片已添加到ZIP：" + zipImageName);} finally {// 关闭图片输入流if (imageIn != null) {try {imageIn.close();} catch (IOException ignored) {}}}}/*** 多张图片批量写入ZIP流** @param zipOut      ZIP输出流* @param imageMap    图片映射：key=图片来源（本地/classpath/URL），value=ZIP内文件名（含路径）* @param resourceLoader Spring资源加载器* @throws Exception 批量处理异常*/public static void batchAddImagesToZip(ZipArchiveOutputStream zipOut, Map<String, String> imageMap,ResourceLoader resourceLoader) throws Exception {for (Map.Entry<String, String> entry : imageMap.entrySet()) {addImageToZip(zipOut, entry.getKey(), entry.getValue(), resourceLoader);}}/*** 工具方法：将输入流写入ZIP流（用于图片流场景）** @param zipOut      ZIP输出流* @param inputStream 输入流（图片/其他文件流）* @param zipFileName ZIP内的文件名（含路径）* @throws Exception 写入异常*/private static void addStreamToZip(ZipArchiveOutputStream zipOut, InputStream inputStream, String zipFileName) throws Exception {try (BufferedInputStream bis = new BufferedInputStream(inputStream)) {ZipArchiveEntry entry = new ZipArchiveEntry(zipFileName);zipOut.putArchiveEntry(entry); // 流无法提前获取大小，不设置sizebyte[] buffer = new byte[1024 * 8];int len;while ((len = bis.read(buffer)) != -1) {zipOut.write(buffer, 0, len);}zipOut.closeArchiveEntry();zipOut.flush();}}