golang ftp客户端示例 支持断点续传

package main

import (

    ftp4go "github.com/shenshouer/ftp4go"

    "fmt"

    "os"

)

var(

    downloadFileName    = "DockerToolbox-1.8.2a.pkg"

    BASE_FTP_PATH       = "/home/bob/"                  // base data path in ftp server

)



func main() {

    ftpClient := ftp4go.NewFTP(0) // 1 for debugging



    //connect

    _, err := ftpClient.Connect("172.8.4.101", ftp4go.DefaultFtpPort, "")

    if err != nil {

        fmt.Println("The connection failed")

        os.Exit(1)

    }

    defer ftpClient.Quit()



    _, err = ftpClient.Login("bob", "p@ssw0rd", "")

    if err != nil {

        fmt.Println("The login failed")

        os.Exit(1)

    }



    //Print the current working directory

    var cwd string

    cwd, err = ftpClient.Pwd()

    if err != nil {

        fmt.Println("The Pwd command failed")

        os.Exit(1)

    }

    fmt.Println("The current folder is", cwd)





    // get the remote file size

    size, err := ftpClient.Size("/home/bob/"+downloadFileName)

    if err != nil {

        fmt.Println("The Pwd command failed")

        os.Exit(1)

    }

    fmt.Println("size ", size)



    // start resume file download

    if err = ftpClient.DownloadResumeFile("/home/bob/"+downloadFileName, "/Users/goyoo/ftptest/"+downloadFileName, false); err != nil{

        panic(err)

    }



}