golang 视频文件下载

package main

import (
	"fmt"
	"io"
	"net/http"
	"os"
)

func main() {
    // 文件url需要修改成目标地址
	fileUrl := "http://asdlkskldko90/adk/asdlks/kajsd=?lksadklko&jmasdn1928="
	err := DownloadFile("22.mp4", fileUrl)
	if err != nil {
		panic(err)
	}
	fmt.Println("Downloaded: " + fileUrl)
}

// DownloadFile will download a url to a local file. It's efficient because it will
// write as it downloads and not load the whole file into memory.
func DownloadFile(filepath string, url string) error {

	// Get the data
	resp, err := http.Get(url)
	if err != nil {
		return err
	}
	defer resp.Body.Close()

	// Create the file
	out, err := os.Create(filepath)
	if err != nil {
		return err
	}
	defer out.Close()

	// Write the body to file
	_, err = io.Copy(out, resp.Body)
	return err
}

执行：

go run main.go

查看下载文件：

root@ubuntu:/tmp/zz# ll
total 1972
-rw-r--r-- 1 root root 3949617 Feb  4 11:06 22.mp4
-rw-r--r-- 1 root root    1341 Feb  4 11:00 main.go
root@ubuntu:/tmp/zz#