func GetObject(c *oss.Client, fpath, opath string) { bytes, err := c.GetObject(opath, -1, -1) if err != nil { log.Fatalln(err) } file, err := os.Create(fpath) if err != nil { log.Fatalln(err) } defer file.Close() file.Write(bytes) fmt.Println("Get object ok") }