cr-launcher/utils/download.go

package utils

import (
	"bufio"
	"errors"
	"fmt"
	"io"
	"net/http"
	"os"
	"path"
)

// http 获取版本信息
// http下载
// var appPath = "data"

func DownloadZip(url string) error {
	res, err := http.Get(url)
	ext := path.Ext(url)
	if ext != ".zip" {
		return errors.New("非zip文件")
	}
	fileName := path.Base(url)
	if err != nil {
		fmt.Println(err)
		return errors.New("get下载失败")
	}
	defer res.Body.Close()

	reader := bufio.NewReader(res.Body)
	file, err := os.Create(fileName)
	if err != nil {
		fmt.Println(err)
		return errors.New("创建文件失败")
	}

	writer := bufio.NewWriter(file)
	_, err = io.Copy(writer, reader)
	if err != nil {
		fmt.Println(err)
		return errors.New("下载文件失败")
	}
	return nil
}