JXLS 导出多sheet，带页眉页脚

/*** 生成多sheet Excel* 带自定义页眉页脚** @param templatePath* @param sheetList* @return* @throws IOException*/public static byte[] generateMultiSheet(String templatePath, List<JxlsHelper2.SheetContext> sheetList) throws IOException {ByteArrayOutputStream baos = new ByteArrayOutputStream();//设置页眉页脚等布局try (InputStream is = new ClassPathResource(templatePath).getInputStream()) {XSSFWorkbook wb = new XSSFWorkbook(is);for (JxlsHelper2.SheetContext sheetContext : sheetList) {if (StringUtils.isEmpty(sheetContext.getName())) {continue;}XSSFSheet sheet = wb.getSheet(sheetContext.getName());if (sheet != null) {translateHeaderTemplate(sheet, sheetContext.getContext());}}wb.write(baos);//渲染数据ByteArrayOutputStream targetStream = new ByteArrayOutputStream();try (InputStream templateStream = new ByteArrayInputStream(baos.toByteArray())) {JxlsHelper2 jxlsHelper = JxlsHelper2.getInstance();Transformer transformer = jxlsHelper.createTransformer(templateStream, targetStream);jxlsHelper.processTemplate(sheetList, transformer);}return targetStream.toByteArray();}}

重写 package org.jxls.util.JxlsHelper;

/*** jx:area(lastCell="R3" multisheet ="sheets")** @param sheetList* @param transformer* @throws IOException*/public void processTemplate(List<SheetContext> sheetList, Transformer transformer) throws IOException {areaBuilder.setTransformer(transformer);List<Area> xlsAreaList = areaBuilder.build();for (Area xlsArea : xlsAreaList) {String sheetName = xlsArea.getStartCellRef().getSheetName();Optional<SheetContext> optional = sheetList.stream().filter(s -> Objects.equals(sheetName, s.getName())).findAny();if (optional.isPresent()) {xlsArea.applyAt(new CellRef(xlsArea.getStartCellRef().getCellName()), optional.get().getContext());}}if (processFormulas) {for (Area xlsArea : xlsAreaList) {setFormulaProcessor(xlsArea);xlsArea.processFormulas();}}if (isHideTemplateSheet()) {List<String> sheetNameTemplate = getSheetsNameOfMultiSheetTemplate(xlsAreaList);for (String sheetName : sheetNameTemplate) {transformer.setHidden(sheetName, true);}}if (isDeleteTemplateSheet()) {List<String> sheetNameTemplate = getSheetsNameOfMultiSheetTemplate(xlsAreaList);for (String sheetName : sheetNameTemplate) {transformer.deleteSheet(sheetName);}}transformer.write();}

增加DTO

    @Data@AllArgsConstructorpublic static class SheetContext {/*** sheet name*/private String name;private Context context;}

调用：

List<JxlsHelper2.SheetContext> sheetList = new ArrayList<>();Context context = new Context();for (String key : contextMap.keySet()) {context.putVar(key, contextMap.get(key));}sheetList.add(new JxlsHelper2.SheetContext("Sheet1", context));//Map<String, Object> contextMap2 = defaultExcelReportProvider.getContextMap("7777", "333", "测试", data);Context context2 = new Context();for (String key : contextMap2.keySet()) {context2.putVar(key, contextMap2.get(key));}sheetList.add(new JxlsHelper2.SheetContext("Sheet2", context2));byte[] bytes = JxlsUtil.generateMultiSheet(getExcelTemplatePath(), sheetList);