douyuan4357
douyuan4357
2016-04-22 06:03

Golang使用sftp golang库将远程文件复制到本地文件夹

已采纳

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)
}

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?

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1条回答

  • dongxing1965 dongxing1965 5年前

    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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