.net实现用QQ登录第三方网站 实例源码

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Xml;
using OpenPlatform.Tool;
using OpenPlatform.Tool.Commom;
using OpenPlatform.Tool.OAuthClient.TencentQQ;
using OpenPlatform.Tool.Utils;
using OpenPlatform.Web.Common;
using OpenPlatform.Web.Models;

namespace OpenPlatform.Web.Controllers
{
    public class HomeController : Controller
    {
        private string PlatformCode = "qq";
        static readonly string ClientId = ConfigurationManager.AppSettings["clientId"];
        static readonly string ClientSecret = ConfigurationManager.AppSettings["clientSecret"];
        static readonly string CallbackUrl = ConfigurationManager.AppSettings["callbackUrl"];
       
        private IOAuthClient oauthClient;
        public HomeController()
        {
            
            oauthClient = new TencentQQClient(ClientId, ClientSecret, CallbackUrl);
            oauthClient.Option.State = PlatformCode;
        }
        public ActionResult Index()
        {
            //第一步：获取开放平台授权地址
            string authorizeUrl = oauthClient.GetAuthorizeUrl(ResponseType.Code);
            ViewData["AuthorizeUrl"] = authorizeUrl;
            return View();
        }
        /// <summary>
        /// 回调地址
        /// </summary>
        /// <returns></returns>
        public ActionResult QQLoginCallback()
        {
            string xmlDataPath = Server.MapPath("~/DataXML/AuthorizeXML.xml");
            string serverCallBackCode = Request["code"];
            //第二步：认证成功获取Code
            Dictionary<String, IOAuthClient> m_oauthClients=new Dictionary<string, IOAuthClient>();
            AuthToken accessToken = oauthClient.GetAccessTokenByAuthorizationCode(serverCallBackCode);
            if (accessToken != null)
            {
                return Content("认证失败");
            }
            string nickName = oauthClient.Token.User.Nickname;
            string openId = oauthClient.Token.OAuthId;
            string responseResult = oauthClient.Token.TraceInfo;
            dynamic userInfo = DynamicHelper.FromJSON(responseResult);
            var info = XMLSerializeHelper.XmlDeserializeFromFile<List<UserInfo>>(xmlDataPath);
            if (info != null && !info.Where(s => s.OpenId == openId).Any())
            {
                #region 保存数据
                //提取xml文档
                XmlDocument xd = new XmlDocument();
                xd.Load(xmlDataPath);
                //获取根节点
                XmlNode root = xd.DocumentElement;
                //创建元素
                XmlElement newItem = xd.CreateElement("UserInfo");
                newItem.AppendChild(newItem);
                XmlElement newOpenId = xd.CreateElement("OpenId");
                XmlElement newNickName = xd.CreateElement("Nickname");
                XmlElement figureurl_2 = xd.CreateElement("figureurl_2");
                //设置内容
                newOpenId.InnerText = openId;
                newNickName.InnerText = nickName;
                figureurl_2.InnerText = userInfo.figureurl_2;
                //添加节点
                root.AppendChild(newItem);
                newItem.AppendChild(newOpenId);
                newItem.AppendChild(newNickName);
                newItem.AppendChild(figureurl_2);
                //保存xml文档
                xd.Save(Server.MapPath(xmlDataPath));
               
                #endregion
            }
            return null;
        }
    }
}