.Net QQ互联教程

qq互联只须要备案便可申请，申请成功后能够到qq互联官网查看教程，本站开始想使用js的教程可是因为本站须要绑定本站的帐号用js教程没法完成，因此使用原始的oauth2.0来完成。

申请qq互联接口

qq互联官网

申请的时候须要注意将申请的应用名称和备案域名的网站名称一致才能经过

开始编码实现

1. 展现qq登陆的按钮，能够到官网下载登陆的logo。
2. 将点击按钮后的连接跳到你申请的回掉页面。
3. 回掉页面设计通常是绑定已有帐号和绑定新帐号其实就是登陆和注册。
4. 回掉页面展现效果（可自行设计）。
5. 实现服务端的业务逻辑。

查阅相关案例都说qq登陆无须绑定已有帐号，这样失去了qq登陆的用户体验，可是本人以为仍是有必要的，下次登陆的话便可直接登陆。

服务端代码

public ActionResult QQReturn()
        {
            int qqid = 0;
            string name = "", image = "",sex="";


            #region 首次调用
            if (string.IsNullOrEmpty(Request["code"]))
            {
                #region 获取code
                string url = "https://graph.qq.com/oauth2.0/authorize?response_type=code&client_id=" + appid + "&redirect_uri=" + HttpUtility.UrlEncode("http://pqpqpq.cn/account/qqreturn") + "&state=loginsuccess&scope=get_user_info,get_info";
                Response.Redirect(url);
                #endregion
            }
            else
            {
                #region 获取access_token
                if (Request["state"] == "loginsuccess")
                {
                    string code = Request["code"];
                    string url = "https://graph.qq.com/oauth2.0/token?grant_type=authorization_code&client_id=" + appid + "&client_secret=" + appkey + "&code=" + code + "&redirect_uri=" + HttpUtility.UrlEncode("http://pqpqpq.cn/account/qqreturn");

                    string str = RequestType.HttpGet(url);

                    if (!string.IsNullOrEmpty(str) && str.IndexOf('&') != -1)
                    {
                        if (!str.Contains("msg"))
                        {
                            string[] arr = str.Split('&');
                            string[] arr1 = new string[arr.Length];
                            for (int i = 0; i < arr.Length; i++)
                            {
                                arr1[i] = arr[i].Split('=')[1];
                            }
                            access_token = arr1[0];
                            refresh_token = arr1[2];
                            expires_in = arr1[1];
                        }
                    }
                }
                #endregion
            } 
            #endregion

            string url1 = "https://graph.qq.com/oauth2.0/me?access_token=" + access_token;

            string str1 = RequestType.HttpGet(url1);

            if (!string.IsNullOrEmpty(str1))
            {
                str1 = str1.Replace("callback(", "").Replace(")", "").Replace(";", "");
            }
            //AddLog(str1);
            AccessToken openid = JsonConvert.DeserializeObject<AccessToken>(str1);

            if (openid != null)
            {
                var isopenid = db.person_qq_login.Where(c => c.openid == openid.openid).FirstOrDefault();
                if (isopenid == null)
                {
                    #region 插入qq登陆信息
                    string geturl = "https://graph.qq.com/user/get_user_info?access_token=" + access_token + "&oauth_consumer_key=" + appid + "&openid=" + openid.openid;
                    string userstr = RequestType.HttpGet(geturl);
                    AddLog(userstr);
                    UserInfo userdata = JsonConvert.DeserializeObject<UserInfo>(userstr);

                    if (userdata.ret == 0)
                    {
                        person_qq_login qq = new person_qq_login();
                        qq.figureurl = userdata.figureurl;
                        qq.figureurl_1 = userdata.figureurl_1;
                        qq.figureurl_2 = userdata.figureurl_2;
                        qq.figureurl_qq_1 = userdata.figureurl_qq_1;
                        qq.figureurl_qq_2 = userdata.figureurl_qq_2;
                        qq.gender = userdata.gender;
                        qq.is_yellow_vip = userdata.is_yellow_vip;
                        qq.is_yellow_year_vip = userdata.is_yellow_year_vip;
                        qq.level = userdata.level;
                        qq.msg = userdata.msg;
                        qq.nickname = userdata.nickname;
                        qq.ret = userdata.ret;
                        qq.vip = userdata.vip;
                        qq.yellow_vip_level = userdata.yellow_vip_level;
                        qq.openid = openid.openid;
                        qq.addTime = DateTime.Now;
                        db.person_qq_login.Add(qq);
                        db.SaveChanges();
                        if (db.SaveChanges()>0)
                        {
                            qqid = qq.ID;
                            name = userdata.nickname;
                            image = userdata.figureurl_qq_2;
                            sex = userdata.gender;
                        }
                    }
                    #endregion
                }
                else
                {
                    var isuser = db.person_user.Where(c => c.qqID == isopenid.ID).FirstOrDefault();
                    if (isuser == null)
                    {
                        qqid = isopenid.ID;
                        name = isopenid.nickname;
                        image = isopenid.figureurl_qq_2;
                    }
                    else
                    {
                        //记录session
                        Session["user_model"] = isuser;
                        return RedirectToAction("Index", "Center");
                    }
                }
            }

            ViewData["qqid"] = qqid.ToString();
            ViewData["nickname"] = name;
            ViewData["faceimage"] = image;
            ViewData["sex"] = sex;

            return View();
        }