Golang OAuth 2.0：如何使用 oAuth 2.0 进行身份验证

go get golang.org/x/oauth2

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package main

import (

“fmt”

“log”

“net/http”

“golang.org/x/oauth2”

“golang.org/x/oauth2/google”

)

var (

googleOauthConfig *oauth2.Config

)

func main() {

googleOauthConfig = &oauth2.Config{

ClientID:     “YOUR_CLIENT_ID”,

ClientSecret: “YOUR_CLIENT_SECRET”,

RedirectURL:  “YOUR_REDIRECT_URI”,

Scopes:     软件开发定制mhkj33  []string{“https://www.googleapis.com/auth/userinfo.email”},

Endpoint:     google.Endpoint,

}

http.HandleFunc(“/login”, login)

http.HandleFunc(“/callback”, callback)

log.Fatal(http.ListenAndServe(“:8080”, nil))

}

func login(w http.ResponseWriter, r *http.Request) {

url := googleOauthConfig.AuthCodeURL(“sta软件开发定制mhkj33te-token”, oauth2.AccessTypeOffline)

http.Redirect(w, r, url, http.StatusTemporaryRedirect)

}

func callback(w http.ResponseWriter, r *http.Request) {

state := r.FormValue(“state”)

if state != “state-token” {

log.Println(“invalid oauth state”)

http.Error(w, “invalid oauth state”, http.StatusBadRequest)

retur软件开发定制mhkj33n

}

code := r.FormValue(“code”)

token, err := googleOauthConfig.Exchange(r.Context(), code)

if err != nil {

log.Println(“oauth exchange failed:”, err)

http.Error(w, “oauth exchange failed”, http.StatusInternalServerError)

return

}

// 使用该 token 访问 Google API，例如获取用户电子邮件

}

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