package main import ( "net/http" "net/http/httputil" "net/url" ) func main() { target := &url.URL{Scheme: "http", Host: "www.google.com"} proxy := httputil.NewSingleHostReverseProxy(target) http.Handle("/google", proxy) http.ListenAndServe(":8099", nil) }
反向代理是可行的。如何获得响应主体?
httputil.ReverseProxy有一个Transport领域。您可以使用它来修改响应。例如:
httputil.ReverseProxy
Transport
type transport struct { http.RoundTripper } func (t *transport) RoundTrip(req *http.Request) (resp *http.Response, err error) { resp, err = t.RoundTripper.RoundTrip(req) if err != nil { return nil, err } b, err := ioutil.ReadAll(resp.Body) if err != nil { return nil, err } err = resp.Body.Close() if err != nil { return nil, err } b = bytes.Replace(b, []byte("server"), []byte("schmerver"), -1) body := ioutil.NopCloser(bytes.NewReader(b)) resp.Body = body resp.ContentLength = int64(len(b)) resp.Header.Set("Content-Length", strconv.Itoa(len(b))) return resp, nil } // ... proxy := httputil.NewSingleHostReverseProxy(target) proxy.Transport = &transport{http.DefaultTransport}
整个场景的操场示例:http : //play.golang.org/p/b0S5CbCMrI。