package test import ( "fmt" "io/ioutil" "log" "net/http" "net/url" "testing" ) var proxyConf = "112.195.81.161:8118" func buildHtppClient(isProxy bool) *http.Client { var proxy func(*http.Request) (*url.URL,error) = nil if isProxy { proxy = func(_ *http.Request) (*url.URL,error) { return url.Parse("http://" + proxyConf) } } transport := &http.Transport{Proxy: proxy} client := &http.Client{Transport: transport} return client } func Test_crawler(t *testing.T) { url := "http://httpbin.org/get" client := buildHtppClient(true) req,err := http.NewRequest("GET",url,nil) if err != nil { log.Fatal(err) } res,err := client.Do(req) if err != nil { log.Fatal(err) } defer res.Body.Close() body,err := ioutil.ReadAll(res.Body) if err != nil { log.Fatal(err) } fmt.Println(string(body)) }