使用sftp golang库将Golang复制远程文件复制到本地文件夹

时间:2016-04-22 06:04:00

标签: networking go sftp

我得到了在远程主机上创建文件的代码:

config := &ssh.ClientConfig{
    User:            "xx",
    HostKeyCallback: nil,
    Auth: []ssh.AuthMethod{
        ssh.Password("xx"),
    },
}

config.SetDefaults()
sshConn, err := ssh.Dial("tcp", "192.xx.1.xx:22", config)
if err != nil {
    panic(err)
}
defer sshConn.Close()

client, err := sftp.NewClient(sshConn)
if err != nil {
    panic(err)
}
defer client.Close()

file, err := client.Create("/www/hello9.txt")
if err != nil {
    panic(err)
}
defer file.Close()

if _, err := file.Write([]byte("Hello world")); err != nil {
    log.Fatal(err)
}

但需要将文件从远程主机复制到本地主机。我怎样才能使用golang工具 github.com/pkg/sftp golang.org/x/crypto/ssh 来实现这一目标?

1 个答案:

答案 0 :(得分:8)

你可以使用sftp包中的Open(path string)WriteTo(w io.Writer)方法(当然你需要一个os.File或类似的东西来写)。

client, err := ssh.Dial("tcp", "192.x.x.x:22", sshConfig)
if err != nil {
    panic("Failed to dial: " + err.Error())
}
fmt.Println("Successfully connected to ssh server.")

// open an SFTP session over an existing ssh connection.
sftp, err := sftp.NewClient(client)
if err != nil {
    log.Fatal(err)
}
defer sftp.Close()

srcPath := "/tmp/"
dstPath := "C:/temp/"
filename := "test.txt"

// Open the source file
srcFile, err := sftp.Open(srcPath + filename)
if err != nil {
    log.Fatal(err)
}
defer srcFile.Close()

// Create the destination file
dstFile, err := os.Create(dstPath + filename)
if err != nil {
    log.Fatal(err)
}
defer dstFile.Close()

// Copy the file
srcFile.WriteTo(dstFile)