code: public AbstractExcelWriter<T> write(List<T> datas) throws WriteExcelException {
          this.initWrite(datas);
          this.validateDataPerWrite();
          for (T data : this.datas) {
              this.writePerData(data);
          }
          this.datas.clear();
          return this;
      }
docs: 写多个数据
  
  @param datas 被写入的数据
  @return this
  @throws WriteExcelException 校验异常