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 需求：Java查询多条数据放入word模板 多个word文件处理成zip压缩包并在前端下载.zip文件

解决方法：在模板的位置定义参数如 {{name}}  {{age}}等等，使用 poi 处理

伪代码：

    @PostMapping("/exportPracticeAppr")public String exportPracticeAppr(HttpServletResponse response, @RequestBody ExportToExcelParamDto paramDto) throws IOException {//查询数据 ExportToWordByPracticeApprDto为模板中的参数List<ExportToWordByPracticeApprDto> practiceApprExport = baseService.practiceApprExport(paramDto);if (practiceApprExport != null && !practiceApprExport.isEmpty()) {// 创建一个zip文件，并打开一个ZipOutputStream来写入文件FileOutputStream fos = new FileOutputStream(paramDto.getActivityName() + "demo.zip");ZipOutputStream zos = new ZipOutputStream(fos);try {//获取word模板文件InputStream resourceAsStream = TrActivityGroupServiceImpl.class.getClassLoader().getResourceAsStream("word/导出模板.docx");XWPFDocument doc = new XWPFDocument(Objects.requireNonNull(resourceAsStream));//循环处理文件for (ExportToWordByPracticeApprDto apprDto : practiceApprExport) {Map<String, Object> replaceMap = BeanUtil.beanToMap(apprDto);Map<String, Object> resultMap = new HashMap<>();replaceMap.forEach((placeholder, replacement) -> resultMap.put("{{" + placeholder + "}}", replacement));replacePlaceholders(doc, resultMap);// 将Word文档保存为临时文件File tempFile = File.createTempFile("demo", DOCX);FileOutputStream tempOut = new FileOutputStream(tempFile);doc.write(tempOut);tempOut.close();// 将临时文件添加到zip文件中  表示压缩包中的文件名称 aa.docxZipEntry zipEntry = new ZipEntry("aa.docx");zos.putNextEntry(zipEntry);FileInputStream fis = new FileInputStream(tempFile);IOUtils.copy(fis, zos);fis.close();zos.closeEntry();tempFile.delete();}// 关闭zip文件输出流zos.close();doc.close();} catch (Exception e) {logger.error("文件导出错误{}", e.getMessage());}}// 返回zip文件内容byte[] zipBytes = IOUtils.toByteArray(Files.newInputStream(Paths.get("demo.zip")));response.reset();response.setContentType("application/zip");response.setHeader("Content-disposition", "attachment; filename=" + URLEncoder.encode("demo.zip", "UTF-8"));response.setContentLength(zipBytes.length);OutputStream out = response.getOutputStream();out.write(zipBytes);out.flush();out.close();return "redirect:/";}private void replacePlaceholders(XWPFDocument document, Map<String, Object> placeholders) throws IOException, InvalidFormatException {//处理普通word文字 不包含表格for (XWPFParagraph paragraph : document.getParagraphs()) {List<XWPFRun> runs = paragraph.getRuns();for (XWPFRun run : runs) {String text = run.getText(0);if (text != null) {for (Map.Entry<String, Object> entry : placeholders.entrySet()) {if (text.contains(entry.getKey())) {text = text.replace(entry.getKey(), entry.getValue() != null ? (String) entry.getValue() : "");run.setText(text, 0);}}}}}// 处理替换表格中的占位符for (XWPFTable table : document.getTables()) {for (XWPFTableRow row : table.getRows()) {for (XWPFTableCell cell : row.getTableCells()) {for (XWPFParagraph paragraph : cell.getParagraphs()) {List<XWPFRun> runs = paragraph.getRuns();for (XWPFRun run : runs) {String text = run.getText(0);if (text != null) {for (Map.Entry<String, Object> entry : placeholders.entrySet()) {if (text.contains(entry.getKey())) {//获取、处理图片略......int format = XWPFDocument.PICTURE_TYPE_PNG;//图片地址BufferedImage image = ImageIO.read(new URL(value));ByteArrayOutputStream outputStream = new ByteArrayOutputStream();//suffix为图片的后缀 .pngImageIO.write(image, suffix, outputStream);byte[] imageBytes = outputStream.toByteArray();//后两个参数是宽高run.addPicture(new ByteArrayInputStream(imageBytes), format, fileName, Units.toEMU(80), Units.toEMU(40));//替换文字  图片和文字如果都展示text = text.replace(entry.getKey(), entry.getValue() != null ? (String) entry.getValue() : "");run.setText(text, 0);}}}}}}}}}

最后前端处理进行下载即可。