本来以为极客学院只有年费会员才可以下载视频的，月会员不能直接下载。用wget一个一个搞感觉太慢，于是用golang写了一段程序，直接生成一段shell脚本。后来知道视频其实也可以右键直接下载的，这段程序也没有什么卵用，还是贴出来分享一下吧。（现在还是小白，感觉代码写的不太好，见谅哈）
代码：
```
package main
import (
"fmt"
"github.com/PuerkitoBio/goquery"
"io"
"io/ioutil"
"net/http"
"net/http/cookiejar"
"net/url"
"os"
)
var cookies []*http.Cookie
const (
spider_base_url string = "http://www.jikexueyuan.com/path/docker/"
login_url string = "http://passport.jikexueyuan.com/sso/login"
verify_code_url string = "http://passport.jikexueyuan.com/sso/verify"
post_login_info_url string = "http://passport.jikexueyuan.com/submit/login?is_ajax=1"
username string = "用户名"
password string = "密码"
)
func getResultHtml(get_url string) *http.Response {
c := &http.Client{}
Jar, _ := cookiejar.New(nil)
getURL, _ := url.Parse(get_url)
Jar.SetCookies(getURL, cookies)
c.Jar = Jar
res, _ := c.Get(get_url)
return res
}
func login() {
//获取登陆界面的cookie
c := &http.Client{}
req, _ := http.NewRequest("GET", login_url, nil)
res, _ := c.Do(req)
req.URL, _ = url.Parse(verify_code_url)
var temp_cookies = res.Cookies()
for _, v := range res.Cookies() {
req.AddCookie(v)
}
// 获取验证码
var verify_code string
for {
res, _ = c.Do(req)
file, _ := os.Create("verify.gif")
io.Copy(file, res.Body)
fmt.Println("请查看verify.gif， 然后输入验证码， 看不清输入0重新获取验证码")
fmt.Scanf("%s", &verify_code)
if verify_code != "0" {
break
}
res.Body.Close()
}
//post数据
postValues := url.Values{}
postValues.Add("expire", "7")
postValues.Add("referer", "http%3A%2F%2Fwww.jikexueyuan.com%2F")
postValues.Add("uname", username)
postValues.Add("password", password)
postValues.Add("verify", verify_code)
postURL, _ := url.Parse(post_login_info_url)
Jar, _ := cookiejar.New(nil)
Jar.SetCookies(postURL, temp_cookies)
c.Jar = Jar
res, _ = c.PostForm(post_login_info_url,
postValues)
cookies = res.Cookies()
data, _ := ioutil.ReadAll(res.Body)
res.Body.Close()
fmt.Println(string(data))
}
type DownloadBean struct {
dirname string
filename string
href string
}
func main() {
login()
for _, v := range cookies {
fmt.Println(v)
}
var bash_str string = "#!/bin/bash \n"
baseMap := map[string]string{}
doc, _ := goquery.NewDocumentFromResponse(getResultHtml(spider_base_url))
doc.Find(".lesson-info-h2").Each(func(i int, contentSelection *goquery.Selection) {
selection := contentSelection.Find("a")
base_href, _ := selection.Attr("href")
dir_name := selection.Text()
bash_str += "mkdir \"" + dir_name + "\"\n"
baseMap[dir_name] = base_href
fmt.Println(dir_name, "-->", base_href)
})
downloadList := []DownloadBean{}
for k, v := range baseMap {
doc, _ := goquery.NewDocumentFromResponse(getResultHtml(v))
doc.Find(".lessonvideo-list dd h2").Each(func(i int, contentSelection *goquery.Selection) {
selection := contentSelection.Find("a")
href, _ := selection.Attr("href")
filename := selection.Text()
fmt.Println(k, "-->", filename, "-->", href)
bean := DownloadBean{dirname: k, href: href, filename: filename}
downloadList = append(downloadList, bean)
})
}
for _, v := range downloadList {
doc, _ := goquery.NewDocumentFromResponse(getResultHtml(v.href))
doc.Find("source").Each(func(i int, contentSelection *goquery.Selection) {
download_url, _ := contentSelection.Attr("src")
one_file := "wget " + download_url + " -O \"./" + v.dirname + "/" + v.filename + ".mp4\"\n"
bash_str += one_file
fmt.Println(one_file)
})
}
err := ioutil.WriteFile("./download.sh", []byte(bash_str), 0x777)
if err != nil {
panic(err.Error())
}
fmt.Println("写入脚本完成")
}
```
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