golang sftp此服务仅允许sftp连接

Question

func (c *Client) Upload(local, remote string) error {
    client, err := sftp.NewClient(c.SSHClient)
    if err != nil {
        return err
    }
    defer client.Close()
    localFile, err := os.Open(local)
    if err != nil {
        return err
    }
    defer localFile.Close()
    remoteFile, err := client.Create(remote)
    if err != nil {
        return err
    }
    _, err = io.Copy(remoteFile, localFile)
    return err
}

我调用此函数将文件上传到SFTP，没有任何返回错误。

使用命令行上传如下： Command execution result

我正在操作此功能

var localFilePath = "./1234.zip"
var remoteDir = "upload/uuuuu.zip"
err = client.Upload(localFilePath, remoteDir)
if err != nil {
    panic(err)
}
fmt.Println("ok")

执行结果不返回任何错误，仅返回：上传文件已完成

但是登陆SFTP，没有上传文件，请大家指点！ 介绍： 此服务仅允许sftp连接 去版本go1.10.2 linux / amd64

简化代码，整个过程就像这样

func Consftp(username, host, privKeyPath, local, remote string) error {
    privKey, err := ioutil.ReadFile(privKeyPath)
    if err != nil {
        return err
    }
    signer, err := ssh.ParsePrivateKey(privKey)
    if err != nil {
        return err
    }

    authMethod := ssh.PublicKeys(signer)
    config := &ssh.ClientConfig{
        User:            username,
        Auth:            []ssh.AuthMethod{authMethod},
        HostKeyCallback: HostKeyCallback,
    }

    conn, err := ssh.Dial("tcp", host, config)
    if err != nil {
        return err
    }
    client, err := sftp.NewClient(conn)
    if err != nil {
        return err
    }
    defer client.Close()
    localFile, err := os.Open(local)
    if err != nil {
        return err
    }
    defer localFile.Close()
    remoteFile, err := client.Create(remote)
    println(err)
    if err != nil {
        return err
    }
    _, err = io.Copy(remoteFile, localFile)
    return err
}

代码已满

package until

import (
    "io"
    "io/ioutil"
    "os"

    "github.com/pkg/sftp"
    "golang.org/x/crypto/ssh"
)
func Consftp(username, host, privKeyPath, local, remote string) error {
    privKey, err := ioutil.ReadFile(privKeyPath)
    if err != nil {
        return err
    }
    signer, err := ssh.ParsePrivateKey(privKey)
    if err != nil {
        return err
    }

    authMethod := ssh.PublicKeys(signer)
    config := &ssh.ClientConfig{
        User:            username,
        Auth:            []ssh.AuthMethod{authMethod},
        HostKeyCallback: HostKeyCallback,
    }

    conn, err := ssh.Dial("tcp", host, config)
    if err != nil {
        return err
    }
    defer conn.Close()
    client, err := sftp.NewClient(conn)
    if err != nil {
        return err
    }
    defer client.Close()
    localFile, err := os.Open(local)
    if err != nil {
        return err
    }
    defer localFile.Close()
    remoteFile, err := client.Create(remote)
    println(err)
    if err != nil {
        return err
    }
    _, err = io.Copy(remoteFile, localFile)
    return err
}