readXls method When reading xls, if an empty column is encountered, the content of the subsequent column will be filled in it, causing the data of the subsequent column of the generated dataframe to be inconsistent with the column corresponding to the data
readXls method When reading xls, if an empty column is encountered, the content of the subsequent column will be filled in it, causing the data of the subsequent column of the generated dataframe to be inconsistent with the column corresponding to the data