qq客户端第三方登陆

xaml代码:

<Window x:Class="WpfApp1.QQFormCef"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp1"
        xmlns:cef="clr-namespace:CefSharp.Wpf;assembly=CefSharp.Wpf"
        mc:Ignorable="d"
        Title="QQFormCef" Height="450" Width="800">
    <Grid>
        <cef:ChromiumWebBrowser x:Name="browser"  ></cef:ChromiumWebBrowser>
    </Grid>
</Window>

后台:

namespace WpfApp1
{
    /// <summary>
    /// QQFormCef.xaml 的交互逻辑
    /// </summary>
    public partial class QQFormCef : Window
    {
        public QQFormCef()
        {
            InitializeComponent();
            // 使用cefsharp 如果使用webbrowser，会出现win7环境中拿不全跳转的地址
            browser.Address = "xxx";
            browser.FrameLoadStart += Browser_FrameLoadStart;
        }
         
        /// <summary>
        /// 应用的APPID
        /// </summary>
        private string app_id = "xxx";

        /// <summary>
        /// 应用的APPKEY
        /// </summary>
        private string app_secret = "xxx";

        /// <summary>
        /// 成功授权后的回调地址
        /// </summary>
        private string myredirect_uri = "xxx";

        /// <summary>
        /// 1：成功  0：失败
        /// </summary>
        public int IsSuccessed { get; set; }

        private void Browser_FrameLoadStart(object sender, CefSharp.FrameLoadStartEventArgs e)
        { 
          //  string onlineId = LoginUserGlobal.OnlineId;
            string url = e.Url;
            if (url.Contains("access_token"))
            {
                string accessToken = Get_AccessToken(url);
                Dispatcher.Invoke(new Action(() => { UserLoin(accessToken); }));
                return;
            }
        }

        //Step2：一般情况是通过Authorization Code获取Access Token，这里直接从网址获取Access Token
        protected string Get_AccessToken(string strTempToken)
        {
            if (string.IsNullOrEmpty(strTempToken))
                return null;
            //qq最终获得的Access_token
            string AccessToken = "";
            int iStart = strTempToken.IndexOf("=");
            int iEnd = strTempToken.LastIndexOf('&');
            if (iStart < iEnd)
            {
                int codeLength = iEnd - iStart - 1;
                AccessToken = strTempToken.Substring(iStart + 1, codeLength);
            }
            return AccessToken;
        }

        //Step3：使用Access Token来获取用户的OpenID
        protected string Get_OpenID(string Access_token)
        {
            string callback = JSONHelper.GetJson("https://graph.qq.com/oauth2.0/me?access_token=" + Access_token);
            int ibegin = callback.IndexOf("{");
            int iEnd = callback.IndexOf("}");
            int ilength = 0;
            if (ibegin < iEnd)
            {
                ilength = iEnd - ibegin;
            }
            string strOpenId = callback.Substring(ibegin, ilength + 1);
            QQCallBack qqOpenId = JSONHelper.ParseFromJson<QQCallBack>(strOpenId);
            string openId = qqOpenId.openid;
            return openId;
        }
        //Step4： 调用OpenAPI获取各种信息
        protected QQUser Get_qqUserInfo(string Access_token, string openId)
        {
            string userInfostr = JSONHelper.GetJson("https://graph.qq.com/user/get_user_info?access_token=" + Access_token + "&oauth_consumer_key=" + app_id + "&openid=" + openId);
            QQUser qqUser = JSONHelper.ParseFromJson<QQUser>(userInfostr);
            return qqUser;
        }

        #region 用户登录
        private void UserLoin(string access_token)
        {
            if (string.IsNullOrEmpty(access_token))
                return;
            string openid = Get_OpenID(access_token);
            if (string.IsNullOrEmpty(openid))
            {
                return;
            }

            QQUser qqUser = Get_qqUserInfo(access_token, openid);
            Close();
            
        }
        #endregion
          
    }
}