如何读取 ReverseProxy 的响应体 [英] How to read response body of ReverseProxy
本文介绍了如何读取 ReverseProxy 的响应体的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
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)
}
反向代理是有效的.如何获取响应正文?
Reverse Proxy is works. How can I get the response body?
推荐答案
httputil.ReverseProxy
有一个 Transport
字段.您可以使用它来修改响应.例如:
httputil.ReverseProxy
has a Transport
field. You can use it to modify the response. For example:
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}
Playground 示例:http://play.golang.org/p/b0S5CbCMrI一>.
Playground example of the whole thing: http://play.golang.org/p/b0S5CbCMrI.
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