Golang使用sftp golang库将远程文件复制到本地文件夹 [英] Golang copy remote file to local folder using sftp golang library

问题描述

我获得了用于在远程主机上创建文件的代码:

I got the code for create a file on remote host:

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)
}

但是需要将文件从远程主机复制到本地主机.如何仅使用golang工具 github.com/pkg/sftp 和 golang.org/x/crypto/ssh 来实现此目标?

But is needed to copy a file from remote host to local host. How can I achieve this using the golang tools github.com/pkg/sftp and golang.org/x/crypto/ssh only?

推荐答案

您可以使用 Open(路径字符串)和 WriteTo(w io.Writer)sftp包中的方法(当然，您需要os.File或类似的东西来写).

You can do it using the Open(path string) and WriteTo(w io.Writer) methods from the sftp package (and of course you need an os.File or something similar to write to).

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)

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