Go语言使用http下载文件

package mainimport ("fmt""io""net/http""os")var (url = "http://127.0.0.1:1789/src/qq.exe")func main() {res, err := http.Get(url)if err != nil {panic(err)}f, err := os.Create("qq.exe")if err != nil {panic(err)}io.Copy(f, res.Body)}