直接展示代码

func md5sum(filepath string) (string, error) {

	f, err := os.Open(filepath)

	if err != nil {

		str1 := "Open err"

		return str1, err

	}

	defer f.Close()

	body, err := ioutil.ReadAll(f)

	if err != nil {

		str2 := "ioutil.ReadAll"

		return str2, err

	}

	md5 := fmt.Sprintf("%x", md5.Sum(body))

	runtime.GC()

	return md5, nil

}