code: public static <T> Workbook writeWorkBook(Workbook workbook, int _titleRow, int count, List<T> beans,
                                               List<String> properties, List<String> titles, String dateFormat) {
          int sheetNum = beans.size() % count == 0 ? beans.size() / count : (beans.size() / count + 1);
          for (int i = 0; i < sheetNum; i++) {
              WriteExcelUtils
                      .writePerSheet(workbook.createSheet(), _titleRow, i * count, i * count + count, beans, properties,
                              titles, dateFormat);
          }
          return workbook;
      }
docs: 向某一WorkBook中写入多个Bean
  
  @param workbook   指定工作簿
  @param _titleRow  指定写入的标题在第几行，0-based
  @param count      指定每个Sheet写入几个bean
  @param beans      指定写入的Beans(或者泛型为Map)
  @param properties 指定写入的bean的属性
  @param titles     指定写入的标题
  @param dateFormat 日期格式
  @return 返回传入的WorkBook