**模式一：map数据，手动封装ExcelExportEntity集合** 现在要导出格式如下：  --------- 数据格式如下： ~~~ List<Map<String,Object>> dataList = new ArrayList<Map<String,Object>>(); Map<String,Object> map1 = new HashMap<>(); map1.put("name","小明"); map1.put("age","21"); map1.put("degree","36"); map1.put("link_name","小八"); map1.put("link_age","33"); dataList.add(map1); Map<String,Object> map2 = new HashMap<>(); map2.put("name","小王"); map2.put("age","24"); map2.put("degree","37"); map2.put("link_name","小六"); map2.put("link_age","26"); dataList.add(map2); ~~~ 配置ExcelExportEntity集合如下： ~~~ List<ExcelExportEntity> entityList = new ArrayList<>(); //一般表头使用这种两个参数的构造器 ExcelExportEntity e1 = new ExcelExportEntity("姓名","name"); ExcelExportEntity e2 = new ExcelExportEntity("年龄","age"); ExcelExportEntity e3 = new ExcelExportEntity("体温","degree"); entityList.add(e1); entityList.add(e2); entityList.add(e3); //需要被设置成子表头的使用这种三个参数的构造器,设置colspan为true ExcelExportEntity e5 = new ExcelExportEntity("姓名","link_name",true); ExcelExportEntity e6 = new ExcelExportEntity("年龄","link_age", true); entityList.add(e5); entityList.add(e6); //合并表头也需要设置colspan为true ExcelExportEntity e4 = new ExcelExportEntity("紧急联系人","linkman",true); List<String> sub = new ArrayList<>(); sub.add("link_name"); sub.add("link_age"); //还需要设置一个子表头key的集合 e4.setSubColumnList(sub); entityList.add(e4); ~~~ 调用ExcelExportUtil.exportExcel方法生成workbook ~~~ Workbook wb = ExcelExportUtil.exportExcel(new ExportParams(null, "sheetName"),entityList,dataList); ~~~ ==================================---=============================== **模式二：实体类，基于注解，添加excel注解groupName属性** 现在要导出格式如下：  ~~~ public class SysUser { @Excel(name = "登录账号", width = 15, groupName = "基本信息") private String username; @Excel(name = "真实姓名", width = 15, groupName = "基本信息") private String realname; @Excel(name = "头像", width = 15) private String avatar; @Excel(name = "性别", width = 15) private String sex; .....省略后续getset ~~~ 数据如下： ~~~ List<SysUser> ls = new ArrayList<SysUser>(); SysUser s1 = new SysUser(); s1.setUsername("zhangsan"); s1.setRealname("张三"); s1.setAvatar("大头贴"); s1.setSex("男"); ls.add(s1); SysUser s2 = new SysUser(); s2.setUsername("lisi"); s2.setRealname("李四"); s2.setAvatar("短寸头"); s2.setSex("男"); ls.add(s2); SysUser s3 = new SysUser(); s3.setUsername("wangwu"); s3.setRealname("王舞"); s3.setAvatar("洗剪吹"); s3.setSex("女"); ls.add(s3); ~~~ 导出Workbook 方法： ~~~ Workbook wb = ExcelExportUtil.exportExcel(new ExportParams(null, "sheetName"),SysUser.class,ls); ~~~