【第三方登录】之QQ第三方登录

最近公司做了个网站，需要用到第三方登录的东西。有QQ第三方登录，微信第三方登录。先把QQ第三方登录的代码列一下吧。

  public partial class QQBack : System.Web.UI.Page
     {
         protected void Page_Load(object sender, EventArgs e)
         {
             Log.Debug("QQ登录", "登录开始");
             string app_id = "";
             var serializer = new JavaScriptSerializer();
             var data = "";
             Dictionary<string, string> obj = new Dictionary<string, string>();
             //获取 accessToken
             string code = Request.QueryString["code"];
             if (!string.IsNullOrEmpty(code))
             {
                 string url = string.Format("https://graph.qq.com/oauth2.0/token?grant_type=authorization_code&client_id={0}&client_secret=872660e40efb3b16eecfce835b3ce081&code={1}&state={2}&redirect_uri={3}"
                     , app_id
                     , code
                     , "test"
                     , "回调地址,还是当前页面地址，以http://www.xxx.com/xxx.aspx  模式，并且对地址进行编码！");

                 data = Tools.GetPage(url);
                 Log.Debug("第一个地址：", data);
                 string accessToken = "";
                 string[] array_access_token = data.Split('&');
                 if (array_access_token != null && array_access_token.Length > )
                 {
                     for (int i = ; i < array_access_token.Length; i++)
                     {
                         if (!string.IsNullOrEmpty(array_access_token[i]))
                         {
                             string[] keyValue = array_access_token[i].Split('=');

                             if (keyValue != null && keyValue.Length > )
                             {
                                 if (keyValue[] == "access_token")
                                 {
                                     accessToken = keyValue[];
                                 }
                             }
                         }
                     }
                 }

                 //获取OpenID
                 string url2 = "https://graph.qq.com/oauth2.0/me?access_token=" + accessToken;
                 data = Tools.GetPage(url2);
                 Log.Debug("第二个地址：", data);
                 data = data.Replace("callback(", "").Replace(");", "");
                 obj = serializer.Deserialize<Dictionary<string, string>>(data);
                 string openid;
                 if (!obj.TryGetValue("openid", out openid))
                     return;

                 string url3 = string.Format("https://graph.qq.com/user/get_user_info?access_token={0}&oauth_consumer_key={1}&openid={2}", accessToken, app_id, openid);

                 data = Tools.GetPage(url3);
                 Log.Debug("第三个地址：", data);
                 var userInfo = serializer.Deserialize<Dictionary<string, string>>(data);

                 if (openid != null && userInfo["nickname"] != null)
                 {
                    Users _MTUsers =  GetModel( openid);  //获取用户信息

                     if (_MTUsers == null)
                     {
                       Insert(_MTUsers);  //如果不存在，创建
                     }
                     else
                     {
                         _MTUsers.LastLogin = DateTime.Now;
                         _MTUsers.LastUpdated = DateTime.Now;
                         Instance.MTUsers.Business.Update(_MTUsers);  //存在则修改
                     }
                     Session["CurrentUser"] = _MTUsers;               //将当前登录的用户放入session中
                     Log.Debug("QQ登录", "执行页面跳转成功");
                 }
             }
             Log.Debug("QQ登录", "登录结束");
         }
     }