【EasyExcel】Company file encryption software causes Convert excel format exception.You can try specifying the 'excelType' yourself

Do POI operations, use Ali's dependencies to process Excel, and report an error Convert excel format exception. You can try specifying the

‘excelType‘ yourself

There are a lot of Baidu, some say the suffix problem, some say the file flow problem. After reading the source code for a long time, they can’t solve it. Finally, the file type is not a valid OOXML office file.

Finally, after thinking about it for a long time, a flash of inspiration found that the company defaults that the file will be encrypted when the file is sent internally and externally... There is a lock on the file.

Can't recognize it, then find it to decrypt, pass...

silly question