code: public void exportObjects2Excel(List<?> data, Class clazz, boolean isWriteHeader,
                                      String sheetName, boolean isXSSF, OutputStream os)
              throws Excel4JException, IOException {
  
          try (Workbook workbook = exportExcelNoTemplateHandler(data, clazz, isWriteHeader, sheetName, isXSSF)) {
              workbook.write(os);
          }
      }
docs: 无模板、基于注解的数据导出
  
  @param data          待导出数据
  @param clazz         {@link com.github.crab2died.annotation.ExcelField}映射对象Class
  @param isWriteHeader 是否写入表头
  @param sheetName     指定导出Excel的sheet名称
  @param isXSSF        导出的Excel是否为Excel2007及以上版本(默认是)
  @param os            生成的Excel待输出数据流
  @throws Excel4JException 异常
  @throws IOException      异常
  @author Crab2Died