docs: private List<String> readAsXLS(String path){
  		try {				
  			XLS2CSV xls2csv = new XLS2CSV(path, -1);
  			return xls2csv.process();
  		} catch (Exception e) {
  			if(e instanceof NotOLE2FileException || e instanceof NotOfficeXmlFileException || e instanceof OfficeXmlFileException){
  				throw new ExcelOperBaseException("请选择正确格式excel文件");
  			}
  			if(e instanceof IOException){
  				throw new ExcelOperBaseException("文件读取失败");
  			}
  			throw new RuntimeException(e);
  		}
  	}