当初要导出格局如下:

实体如下:

public class TestEntity{    @Excel(name = "姓名", width = 15)    private String username;        @Excel(name = "年龄", width = 15)    private int age;.....省略后续getset

数据格式如下:

//多个map,对应了多个sheetList<Map<String, Object>> listMap = new ArrayList<Map<String, Object>>();for(int i=0;i<3;i++){    Map<String, Object> map = new HashMap<String, Object>();    map.put("title",getExportParams("测试"+i));//表格title    map.put("entity",TestEntity.class);//表格对应实体    //数据封装形式一:map数据,手动封装ExcelExportEntity汇合    List<Map> ls=new ArrayList<Map> ();    for(int j=0;j<10;j++){        Map map = new HashMap();        map1.put("name","李四"+j);        map1.put("age",18+j);        ls.add(map);    }   //数据封装形式二:实体类    List<TestEntity> ls=new ArrayList<TestEntity> ();    for(int j=0;j<10;j++){        TestEntity testEntity = new TestEntity();        testEntity.setName("张三"+j);        testEntity.setAge(18+j);        ls.add(testEntity);    }    map.put("data", ls);    listMap.add(map);}//导出参数public static ExportParams getExportParams(String name) {     //表格名称,sheet名称,导出版本     return  new ExportParams(name,name,ExcelType.XSSF);}

调用ExcelExportUtil.exportExcel办法生成workbook

Workbook wb = ExcelExportUtil.exportExcel(listMap,ExcelType.XSSF);