此代码有效:
func handleFacebookCallback(w http.ResponseWriter, r *http.Request) {
state := r.FormValue("state")
if state != oauthStateString {
fmt.Printf("invalid oauth state, expected '%s', got '%s'\n", oauthStateString, state)
http.Redirect(w, r, "/", http.StatusTemporaryRedirect)
return
}
code := r.FormValue("code")
////////////////////////////////////////////////////
Url, err := url.Parse(oauthConf.Endpoint.TokenURL)
if err != nil {
log.Fatal("Parse: ", err)
}
parameters := url.Values{}
parameters.Add("client_id", oauthConf.ClientID)
parameters.Add("client_secret", oauthConf.ClientSecret)
parameters.Add("redirect_uri", "http://localhost:9090/oauth2callback")
parameters.Add("code", code)
Url.RawQuery = parameters.Encode()
resp, err := http.Get(Url.String())
if err != nil {
fmt.Printf("Get: %s\n", err)
http.Redirect(w, r, "/", http.StatusTemporaryRedirect)
return
}
defer resp.Body.Close()
但是当我将标记//////...
下方的部分替换为:
token, err := oauthConf.Exchange(oauth2.NoContext, code)
if err != nil {
fmt.Printf("oauthConf.Exchange() failed with '%s'\n", err)
http.Redirect(w, r, "/", http.StatusTemporaryRedirect)
return
}
我明白了:
oauthConf.Exchange()因'oauth2失败:无法获取令牌:400错误 请求响应:{“error”:{“message”:“缺少redirect_uri 参数 “” 类型 “:” OAuthException”, “代码” 191 “fbtrace_id”: “XXXX”}}“
包golang.org/x/oauth2
无法与code
交换token
吗?
答案 0 :(得分:1)
我发现了什么遗失。我显然需要在RedirectURL
结构中添加oauthConfig
字段以使Exchange()
正常工作。对于Slack或GitHub来说情况并非如此,但显然FB稍微挑剔。
var oauthConf = &oauth2.Config{
ClientID: "YOUR_CLIENT_ID",
ClientSecret: "YOUR_CLIENT_SECRET",
RedirectURL: "http://localhost:9090/oauth2callback", /* Fixed! */
Scopes: []string{"public_profile"},
Endpoint: facebook.Endpoint,
}