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A sheet is dynamically exported, pseudo code, to create a populated workbook object

List<Map<String, Object>>list = new ArrayList<Map<String, Object>>();
HashMap<String, Object> map = new HashMap<>();
map.put("name", "小明");
map.put("age", "18");
list1.add(map);
List<ExcelExportEntity> entitys=new ArrayList<>();
entitys.add(new ExcelExportEntity("名字" ,"name"));
entitys.add(new ExcelExportEntity("年龄" ,"age"));
ExportParams exportParams = new ExportParams(null, "sheet1名字");
exportParams.setType(ExcelType.XSSF);
Workbook workbook = ExcelExportUtil.exportExcel(exportParams, entitys, list);

Dynamically export multiple sheets, pseudocode, and create a populated workbook object

List<Map<String, Object>> sheet1ListMap= new ArrayList<Map<String, Object>>();
 
List<Map<String, Object>> sheet2ListMap= new ArrayList<Map<String, Object>>();
 
List<ExcelExportEntity> sheet1List=new ArrayList<>();
sheet1List.add(new ExcelExportEntity("名字" ,"name"));
sheet1List.add(new ExcelExportEntity("年龄" ,"age"));
 
List<ExcelExportEntity> sheet2List=new ArrayList<>();
sheet2List.add(new ExcelExportEntity("学号" ,"sno"));
sheet2List.add(new ExcelExportEntity("课程" ,"course"));
 
ExportParams exportParams1 = new ExportParams(null, "sheet1名字");
exportParams1.setType(ExcelType.XSSF);
 
ExportParams exportParams2 = new ExportParams(null, "sheet2名字");
exportParams2.setType(ExcelType.XSSF);
 
Workbook workbook = new XSSFWorkbook();
ExcelExportService service = new ExcelExportService();
// 创建sheet1,执行的先后顺序
service.createSheetForMap(workbook, exportParams1, sheet1List, sheet1ListMap);
// 创建sheet2
service.createSheetForMap(workbook, exportParams2, sheet2List, sheet2ListMap);

Note: The createSheetForMap() method has usage restrictions, and the exported data cannot be null. If you need to export a form with only a header and no data, you need to create a corresponding entity class and use annotations.

Reference Documents:Easy-poi implements dynamic columns (titles), multi-sheet export of excel documents and other operations - with complete test cases