package mainimport (	"fmt"	"io/ioutil"	"net/http"	"net/url")// http get by proxyfunc GetByProxy(url_addr, proxy_addr string) (*http.Response, error) {	request, _ := http.NewRequest("GET", url_addr, nil)	proxy, err := url.Parse(proxy_addr)	if err != nil {		return nil, err	}	client := &http.Client{		Transport: &http.Transport{			Proxy: http.ProxyURL(proxy),		},	}	return client.Do(request)}func main() {	proxy := "http://58.252.56.149:9000/"	url := "http://www.baidu.com/"	resp, _ := GetByProxy(url, proxy)	fmt.Println(resp)	defer resp.Body.Close()	body, _ := ioutil.ReadAll(resp.Body)	fmt.Println(string(body))}