package main
    
import (
    "os"
    "encoding/csv"
)
    
func main() {
    f, err := os.Create("haha2.xls")
    if err != nil {
        panic(err)
    }
    defer f.Close()
    
    f.WriteString("\xEF\xBB\xBF") // 写入UTF-8 BOM
    
    w := csv.NewWriter(f)
    w.Write([]string{"编号","姓名","年龄"})
    w.Write([]string{"1","张三","23"})
    w.Write([]string{"2","李四","24"})
    w.Write([]string{"3","王五","25"})
    w.Write([]string{"4","赵六","26"})
    w.Flush()
}