Go-下载网上图片

package main

import (

    "bytes"

    "fmt"

    "io"

    "io/ioutil"

    "net/http"

    "os"

    "regexp"

)

func main() {

    imagPath := "http://img2.bdstatic.com/img/image/166314e251f95cad1c8f496ad547d3e6709c93d5197.jpg"

    //图片正则

    reg, _ := regexp.Compile(`(\w|\d|_)*.jpg`)

    name := reg.FindStringSubmatch(imagPath)[0]

    fmt.Print(name)

    //通过http请求获取图片的流文件

    resp, _ := http.Get(imagPath)

    body, _ := ioutil.ReadAll(resp.Body)

    out, _ := os.Create(name)

    io.Copy(out, bytes.NewReader(body))

    return

}