如何在Golang中获得http重定向状态码

然后，您可以使用此传输创建一个客户端，并且应该记录任何重定向：

  client：=& http.Client {Transport：LogRed irects {}} 
  

以下是您可以尝试的完整示例：http://play.golang.org/p/8uf8Cn31HC

I'd like to log 301s vs 302s but can't see a way to read the response status code in Client.Do, Get, doFollowingRedirects, CheckRedirect. Will I have to implement redirection myself to achieve this?

http.Client

type LogRedirects struct {
    Transport http.RoundTripper
}

func (l LogRedirects) RoundTrip(req *http.Request) (resp *http.Response, err error) {
    t := l.Transport
    if t == nil {
        t = http.DefaultTransport
    }
    resp, err = t.RoundTrip(req)
    if err != nil {
        return
    }
    switch resp.StatusCode {
    case http.StatusMovedPermanently, http.StatusFound, http.StatusSeeOther, http.StatusTemporaryRedirect:
        log.Println("Request for", req.URL, "redirected with status", resp.StatusCode)
    }
    return
}

(you could simplify this a little if you only support chaining to the default transport).

You can then create a client using this transport, and any redirects should be logged:

client := &http.Client{Transport: LogRedirects{}}

Here is a full example you can experiment with: http://play.golang.org/p/8uf8Cn31HC

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