1. Official website address
http://jxls.sourceforge.net/reference/reader.html
2. Form template making
1. Control layer code
2. Table name, corresponding to 3
3. The field name corresponds to the attribute of 1
4. Comment items correspond to 2. var="record" is equivalent to the ${record.name} of the table corresponding to the alias
5. Comments, the end position of the B3 header
3. Code
https://gitee.com/kangxiaozi/excel_util