demo/utility/file.go

package utility

import (
	"github.com/gogf/gf/v2/net/ghttp"
	"github.com/tealeg/xlsx"
)

func GetFileSlice(uploadFile *ghttp.UploadFile) (output [][][]string, err error) {
	file, err := uploadFile.Open()
	if err != nil {
		return nil, err
	}
	var b []byte
	_, err = file.Read(b)
	if err != nil {
		return nil, err
	}
	fileXlsx, err := xlsx.OpenBinary(b)
	if err != nil {
		return nil, err
	}
	slice, err := fileXlsx.ToSlice()
	if err != nil {
		return nil, err
	}
	return slice, nil
}