Web开发框架微平台公众号一个登陆页面实现代码

直接贴上代码：

 /// <summary>
    ///Web开发框架 WXLogin1 的摘要说明
    /// </summary>
    public partial class WXLogin1 : AjaxBase, IRequiresSessionState
    {
        string code = ""; //微信返回的Code
        //页面初始化
        protected override void PageLoad()
        {
            base.PageLoad();
            code = Parse.String("code", "");
        }
        //Web开发框架发起微信登录请求
        [QD.Web.Ajax.AjaxMethod]
        public void Login()
        {
            //第一步： 获取code
            Response.Redirect(string.Format(WXLoginConfig.Url_Sep1, WXLoginConfig.APPID, WXLoginConfig.Redirect_Uri));
        }
        //微信授权后，回调函数
        [QD.Web.Ajax.AjaxMethod]
        public void CallBack()
        {
            if (string.IsNullOrEmpty(code))
                JsonResult(500, "授权失败,code参数无效!");
            mShop model = Oauth();                    //微信授权
            if (model != null)
                UserLogin(model, model.open_id);                //验证成功后，注册用户、登录
        }
        mShop Oauth()
        {
            //第二步：根据code获取token失败
            string url2 = string.Format("https://api.weixin.qq.com/sns/oauth2/access_token?appid={0}&secret={1}&code={2}&grant_type=authorization_code", WXLoginConfig.APPID, WXLoginConfig.APPSECRET, code);
            string html2 = GetHtml(url2);
            MWXLogin json = JsonParse<MWXLogin>(html2);
            if (json == null || string.IsNullOrEmpty(json.Access_Token))
                JsonResult(500, "'授权失败!无法获取access_token,返回值:' " + html2);
            //第三步： 根据openid和access_token查询用户信息
            string url3 = string.Format("https://api.weixin.qq.com/sns/userinfo?access_token={0}&openid={1}&lang=zh_CN", json.Access_Token, json.OpenID);
            string html3 = GetHtml(url3);
            json = JsonParse<MWXLogin>(html3);
            //web开发框架获取昵称、性别、头像、国家、省份、城市,openid等参数
            if (string.IsNullOrEmpty(json.OpenID))
                JsonResult(500, "授权失败!无法获取昵称、头像等信息,返回值:" + html3);
            return GetModel(json);
        }
        void UserLogin(mShop model, string unionid)
        {
            //登录成功后的信息
            int userid = 0;
            int code = DaoUser.Login(model, out userid);
            model.Id = userid;
            //获取会员版本
            if (model.Id > 0)
            {
                model.GroupId = GetGroupId(model.Id);
            }
            if (code == 4007)
                ShowLoginError(4007);   //账户被禁用
            if (code == 4005)
            {
                //用户名不存在,注册新账号
                code = Register(model);
                //添加积分
                ShopPointBLL.AddByOption(model.Id, PointOption.MyRegister);
            }
            if (code == 0 || code == 4005)
            {
                //通过二维码方式邀请的, 加入亲友圈
                string msg = string.Empty;
                if (Request.Cookies["fromid"] != null)
                    msg = AddFriend(model.Id);
                ShowLoginSuccess(model, msg);
            }
            else
                ShowLoginError(code);
        }
        int Register(mShop model)
        {
            int user_id = 0;
            int code = new ShopBLL().Regist(RegisterType.WeChart, model.NickName, model.Logo, model.open_id, customId, out user_id);
            model.Id = user_id;
            return code;
        }
        mShop GetModel(MWXLogin json)
        {
            Random rand = new Random();
            mShop model = new mShop();
            model.Name = "wx" + rand.Next(10000000, 99999999);
            model.NickName = json.NickName;
            model.Logo = json.HeadImgUrl;   //头像,完整URL
            model.login_type = 3;           //1 账号密码登录，2 QQ登录，3微信登录
            model.Phone = "";
            model.Password = "";
            model.QQ = "";
            model.Email = "";
            model.open_id = json.UnionID;    //必须用unionID，这样才能保证app和网页登录是同一个微信账号
            return model;
        }
        /// <summary>
        /// 获取会员版本
        /// </summary>
        int GetGroupId(int userid)
        {
            Dictionary<string, object> dic = new ShopDAO().Get(userid, "group_id,expiretime");
            if (dic != null && dic["expiretime"] != DBNull.Value)
            {
                DateTime expiretime = Convert.ToDateTime(dic["expiretime"]);
                if (expiretime.Subtract(DateTime.Now).TotalDays >= 0)
                    return Convert.ToInt32(dic["group_id"]);
            }
            return 0;
        }
        /// <summary>
        /// 通过二维码邀请方式，添加亲友
        /// </summary>
        /// <param name="userid"></param>
        string AddFriend(int login_userid)
        {
            MoFriend modelFriend = new MoFriend()
               {
                   userid = Convert.ToInt32(Request.Cookies["fromid"].Value),
                   union_id = login_userid,
                   circle_id = Convert.ToInt32(Request.Cookies["from_circleid"].Value),
                   state = 1,
                   date = DateTime.Now
               };
            return FriendBLL.AddFriendByCode(modelFriend, login_userid);
            //DaoShopGroup dalGroup = new DaoShopGroup();
            //try
            //{
            //    int add_shop_id = Convert.ToInt32(Request.Cookies["fromid"].Value);
            //    //获取会员的版本
            //    Dictionary<string, object> group = dalGroup.GetMyUsed(add_shop_id);
            //    //更新会员VIP版本
            //    if (group != null)
            //        UserBLL.UpdateVersion(userid, Convert.ToInt32(group["groupid"]), Convert.ToDateTime(group["endtime"]), add_shop_id);
            //}
            //catch (Exception ex)
            //{
            //    new DaoLog().add("wxreg", string.Format("注册后自动升级VIP失败,{0}", ex.Message));
            //}
        }
        void ShowLoginError(int code)
        {
            Response.Redirect(string.Format("{0}/wap/error.html?code={1}&msg=", ZYBConfig.Path.Domain, code));
        }
        void ShowLoginSuccess(mShop model, string msg)
        {
            //记录登录状态
            HttpCookie c1 = new HttpCookie("logintype", "3");
            HttpCookie c2 = new HttpCookie("nick_name", QD.WX.Utill.Util.UrlEncode(model.NickName));
            HttpCookie c3 = new HttpCookie("userid", model.Id.ToString());
            HttpCookie c4 = new HttpCookie("groupid", model.GroupId.ToString());
            c1.Expires = c2.Expires = c3.Expires = c4.Expires = DateTime.Now.AddDays(30);
            Response.Cookies.Add(c1);
            Response.Cookies.Add(c2);
            Response.Cookies.Add(c3);
            Response.Cookies.Add(c4);
            //跳转到亲友页面
            if (Request.Cookies["fromid"] != null)
            {
                string circle_id = Request.Cookies["from_circleid"].Value;
                HttpCookie c5 = new HttpCookie("fromid", "0");
                HttpCookie c6 = new HttpCookie("from_circleid", "0");
                c5.Expires = c6.Expires = DateTime.Now.AddDays(-1);
                Response.Cookies.Add(c5);        //清空from_userid
                Response.Cookies.Add(c6);       //清空from_circleid
                Response.Redirect(string.Format("/wap/qy_friend.html?circle_id={0}&addmsg={1}", circle_id, msg));
            }
            else if (Request.Cookies["backurl"] != null)
            {
                //跳转到Web开发框架

指定页面,如：扫码绑定血压、血糖设备
                Response.Redirect(HttpContext.Current.Server.UrlDecode(Request.Cookies["backurl"].Value));    //登录后跳转，在扫描二维码绑定设备中用到
            }
            else
            {
                //跳转到会员中心
                Response.Redirect(string.Format("{0}/wap/my.html?code={1}&userid={2}&groupid={3}&logintype={4}&nick_name={5}", ZYBConfig.Path.Domain, code, model.Id, model.GroupId, 3, model.NickName));
            }
        }
        string GetHtml(String url)
        {
            return WebHttpHelper.Request(url);
        }
    }

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