beego 中导出 excel

package utils
       import(
       "github.com/spf13/cast"
       "github.com/tealeg/xlsx"
       "github.com/astaxie/beego/utils"
       "time"
       )
       
        func ExportExcel() (filename string, err error) {
        	
        	var file *xlsx.File
        	var sheet *xlsx.Sheet
        	var row *xlsx.Row
        	var cell *xlsx.Cell
        
        	file = xlsx.NewFile()
        	sheet, _ = file.AddSheet("sheet1")
        	row = sheet.AddRow()
        	cell = row.AddCell()
        	cell.Value = "第一行第一列"
        
        	cell = row.AddCell()
        	cell.Value = "第一行第二列"
        
        
        	for i := 0; i < 100; i++ {
        		row = sheet.AddRow()
        		cell = row.AddCell()
        		cell.Value = "第二行第一列"
        		cell = row.AddCell()
        		cell.Value = "第二行第二列"
        	}
        
        	if !utils.FileExists("logs") {
        		os.MkdirAll("logs", os.ModePerm)
        	}
        	filename = "logs/" + cast.ToString(time.Now().Unix()) + ".xlsx"
        	err = file.Save(filename)
        	return filename, err
        }
    
    //golang 获取数据库数据导出excel 存入文件   
    在beego中使用 （this *Controller）{
        this.ctx.Output.Download(filename,"重命名.xlsx")
    }
​