//读取一行func myReadLine(paths string) error {    //先获取到文件信息    fileinfo, err := os.Stat(paths)    if err != nil {        return fmt.Errorf("get file info error")    }    //判断是否是目录    if fileinfo.IsDir() {        return fmt.Errorf("paths is dir")    }    f, err := os.Open(paths)    rd := bufio.NewReader(f)    for {        //跟ReadString功能相似，不过是返回的字节切片        /*            lineBytes, err := rd.ReadBytes('\n')            line := string(lineBytes)        */        line, err := rd.ReadString('\n')            }            lineBytes, err := rd.ReadBytes('\n')            line := string(lineBytes)        */        line, err := rd.ReadString('\n')        line = strings.Trim(line, "\n")        fmt.Printf("%s\n", line)        if err != nil || err == io.EOF {            if err != nil {                return fmt.Errorf("ReadString error")            }            break        }    }    return nil}