微信公众号开发网页授权获取用户基本信息

如果用户在微信客户端中访问第三方网页，公众号可以通过微信网页授权机制，来获取用户基本信息，进而实现业务逻辑。

微信公众号开发网页授权获取用户基本信息

注意：网页授权两种方式

微信公众号开发网页授权获取用户基本信息

更多网页授权请查阅官网文档：网页授权

静默授权

静默授权即可以在用户关注的的时候，获取用户基本信息，此过程用户无感知。

第一步，通过工厂类转发请求

 /// <returns></returns>        public string HandleRequest()        {            string response = string.Empty;            EventMessage em = EventMessage.LoadFromXml(RequestXml);            if (em != null)            {                switch (em.Event.ToLower())                {                    case ("subscribe"):                        response = SubscribeEventHandler(em);//通过工厂类分发过来的请求，匹配到关注事件                        break;                    case ("unsubscribe"):                        response = Un_SubscribeEventHandler(em);                        break;                    case "click":                        response = ClickEventHandler(em);                        break;                }            }            return response;        }

第二步，写用户关注事件

                                                 WeChat.Messages.TextMessage tm = = em.FromUserName;            tm.FromUserName = em.ToUserName;            tm.CreateTime ==

 　　　　　　return tm.GenerateContent();
 }

第三步，根据得到的OpenId及accesstoken，即可获取用户基本信息（此处演示是将该用户存入数据库中）

/// <summary>        /// 根据OpenId将此条粉丝记录插入数据库中        /// </summary>        /// <param name="FromUserName"></param>        /// <param name="ToUserName"></param>        public void ShowUserInfo(string FromUserName, string ToUserName)        {            try            {                Models.Users user = new Models.Users();                DAL.User userInfo = new DAL.User();                //获取accesstoken，获取用户基本信息需要Openid和accesstoken即可　　　　　　　　 accesstoken = Utility.Context.AccessToken;　　　　　　　　 string url = string.Format("https://api.weixin.qq.com/cgi-bin/user/info?access_token={0}&openid={1}&lang=zh_CN", accesstoken, FromUserName);               string result = HttpUtility.GetData(url);               XDocument doc = XmlUtility.ParseJson(result, "root");               XElement root = doc.Root;               if (root != null)               {                    #region 取值/存值                                        subscribe = root.Element("subscribe").Value;//是否关注 1 是关注                     nickname = root.Element("nickname").Value; //昵称                    sex = root.Element("sex").Value; //性别什么                    headimgurl = root.Element("headimgurl").Value; //头像url                    province = root.Element("province").Value;//地区                     country = root.Element("country").Value;                    language = root.Element("language").Value;                    subscribe_time = root.Element("subscribe_time").Value;                    DateTime create_time = Common.GetTime(subscribe_time);//将时间戳转换为当前时间                    city = root.Element("city").Value;                    user.OpenID = FromUserName;//OpenID即粉丝ID                    user.PublicId = ToUserName;                    user.UserID = FromUserName;                    user.NickName = nickname;                    user.Sex = int.Parse(sex);                    user.Subscribe = int.Parse(subscribe);                    user.Country = country;                    user.Province = province;                    user.City = city;                    user.CreateDate = create_time;                    user.HeadimgUrl = headimgurl;                    //将user实体存入数据库中                    bool show = _user.Add(user);                    #endregion                }            }            catch            {                throw (new ArgumentNullException());            }        }

上面代码中 AccessToken的实现，新建一个Context类即可

private static DateTime GetAccessToken_Time;        /// <summary>        /// 过期时间为7200秒        /// </summary>        private static int Expires_Period = 7200;        /// <summary>        ///         /// </summary>        private static string mAccessToken;        public static string AppID = "换成相应公众号的即可";        public static string AppSecret = "换成相应公众号的即可";        /// <summary>        /// 调用获取ACCESS_TOKEN,包含判断是否过期        /// </summary>        public static string AccessToken        {            get            {                //如果为空，或者过期，需要重新获取                if (string.IsNullOrEmpty(mAccessToken) || HasExpired())                {                    //获取access_token                    mAccessToken = GetAccessToken(AppID, AppSecret);                }                return mAccessToken;            }        }        /// <summary>        /// 获取ACCESS_TOKEN方法        /// </summary>        /// <param name="appId"></param>        /// <param name="appSecret"></param>        /// <returns></returns>        private static string GetAccessToken(string appId, string appSecret)        {            string url = string.Format("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}", appId, appSecret);            string result = HttpUtility.GetData(url);            XDocument doc = XmlUtility.ParseJson(result, "root");            XElement root = doc.Root;            if (root != null)            {                XElement access_token = root.Element("access_token");                if (access_token != null)                {                    GetAccessToken_Time = DateTime.Now;                    if (root.Element("expires_in") != null)                    {                        Expires_Period = int.Parse(root.Element("expires_in").Value);                    }                    return access_token.Value;                }                else                {                    GetAccessToken_Time = DateTime.MinValue;                }            }            return null;        }        /// <summary>        /// 判断Access_token是否过期        /// </summary>        /// <returns>bool</returns>        private static bool HasExpired()        {            if (GetAccessToken_Time != null)            {                //过期时间，允许有一定的误差，一分钟。获取时间消耗                if (DateTime.Now > GetAccessToken_Time.AddSeconds(Expires_Period).AddSeconds(-60))                {                    return true;                }            }            return false;        }

GetData的实现

　　　　 public static string GetData(string url)        {            return SendGetHttpRequest(url, "application/x-www-form-urlencoded");        }

ParseJson的实现

　　　　　public static XDocument ParseJson(string json, string rootName)        {            return JsonConvert.DeserializeXNode(json, rootName);        }

关于第三步的 HttpUtility类中还有一些其他公用帮助方法，在这里一并放出，调用即可

/// <summary>        /// 发送请求        /// </summary>        /// <param name="url">Url地址</param>        /// <param name="data">数据</param>        public static string SendHttpRequest(string url, string data)        {            return SendPostHttpRequest(url, "application/x-www-form-urlencoded", data);        }        /// <summary>        ///         /// </summary>        /// <param name="url"></param>        /// <returns></returns>        public static string GetData(string url)        {            return SendGetHttpRequest(url, "application/x-www-form-urlencoded");        }        /// <summary>        /// 发送请求        /// </summary>        /// <param name="url">Url地址</param>        /// <param name="method">方法（post或get）</param>        /// <param name="method">数据类型</param>        /// <param name="requestData">数据</param>        public static string SendPostHttpRequest(string url, string contentType, string requestData)        {            WebRequest request = (WebRequest)HttpWebRequest.Create(url);            request.Method = "POST";            byte[] postBytes = null;            request.ContentType = contentType;            postBytes = Encoding.UTF8.GetBytes(requestData);            request.ContentLength = postBytes.Length;            using (Stream outstream = request.GetRequestStream())            {                outstream.Write(postBytes, 0, postBytes.Length);            }            string result = string.Empty;            using (WebResponse response = request.GetResponse())            {                if (response != null)                {                    using (Stream stream = response.GetResponseStream())                    {                        using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))                        {                            result = reader.ReadToEnd();                        }                    }                }            }            return result;        }        /// <summary>        /// 发送请求        /// </summary>        /// <param name="url">Url地址</param>        /// <param name="method">方法（post或get）</param>        /// <param name="method">数据类型</param>        /// <param name="requestData">数据</param>        public static string SendGetHttpRequest(string url, string contentType)        {            WebRequest request = (WebRequest)HttpWebRequest.Create(url);            request.Method = "GET";            request.ContentType = contentType;            string result = string.Empty;            using (WebResponse response = request.GetResponse())            {                if (response != null)                {                    using (Stream stream = response.GetResponseStream())                    {                        using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))                        {                            result = reader.ReadToEnd();                        }                    }                }            }            return result;        }

View Code

顺便提下上文中用到的User类如下

public class Users    {        /// <summary>        /// 全局凭证唯一Id        /// </summary>        public string OpenID { get; set; }        /// <summary>        /// 公众号Id        /// </summary>        public string PublicId { get; set; }        /// <summary>        /// 用户Id        /// </summary>        public string UserID { get; set; }        /// <summary>        /// 昵称        /// </summary>        public string NickName { get; set; }        /// <summary>        /// 性别 1是男 0是女        /// </summary>        public int Sex { get; set; }        /// <summary>        /// 是否关注 1是关注         /// </summary>        public int Subscribe { get; set; }        /// <summary>        /// 国家        /// </summary>        public string Country { get; set; }        /// <summary>        /// 地区        /// </summary>        public string Province { get; set; }        /// <summary>        /// 城市        /// </summary>        public string City { get; set; }        /// <summary>        /// 关注时间        /// </summary>        public DateTime CreateDate { get; set; }        /// <summary>        /// 用户头像        /// </summary>        public string HeadimgUrl { get; set; }        /// <summary>        /// 第三方平台Id，可为空        /// </summary>        public string UnionID { get; set; }        /// <summary>        /// 用户取消关注时间        /// </summary>        public DateTime Un_Subscribe_Time { get; set; }    }

演示效果

数据库中此时是存在10条数据的，当点击关注此公众号的时候，就将此用户的基本信息存入数据库了，数据库刷新后变成11条数据

网页授权流程

具体介绍依然可参考官网文档：网页授权

第一步，判断该用户是否获取授权，若没有授权，则跳转至授权页面，若授权，则获取基本信息

核心代码

        /// <summary>        /// 获取授权用户的基本信息,包括头像，姓名，等等(推荐方法）        /// </summary>        /// <param name="accessToken">用户授权之后的accessToken</param>        /// <param name="openid">用户授权之后的openid</param>        /// <returns></returns>        public static ShouQuanWeiXinUserInfo GetShouQuanMessage()        {            //先判断是否有获取到用户授权的Code,HttpContext.Current.Session["ShouquanCode"]            if (HttpContext.Current.Session["ShouquanCode"] == null|| HttpContext.Current.Session["ShouquanCode"].ToString()=="")            {                HttpContext.Current.Session["ShouquanCode"] = "123";                //用户授权的Code                GetShouQuanCodeUrl(HttpContext.Current.Request.Url.AbsoluteUri);            }            else if(HttpContext.Current.Request.QueryString["code"] == null || HttpContext.Current.Request.QueryString["code"] == "")            {                //用户授权的Code                GetShouQuanCodeUrl(HttpContext.Current.Request.Url.AbsoluteUri);            }            else            {                var model = ShouQuanAccessToken(HttpContext.Current.Request.QueryString["code"]);                var url =                    $"http://www.php.cn/{model.access_token}&openid={model.openid}&lang=zh_CN";                string gethtml = MyHttpHelper.HttpGet(url);                var ac = JsonHelpers.ToObject<ShouQuanWeiXinUserInfo>(gethtml);                return ac;            }            return null;        }

其中，用户授权的code方法如下：

 /// <summary>        /// 重新获取用户授权的Code,可以获取用户的基本信息（头像，姓名，等等）(推荐用的方法）        /// </summary>        /// <param name="url">目标Url</param>        /// <returns></returns>        public static void GetShouQuanCodeUrl(string url)        {            string CodeUrl = "";            //加密过的url            string value = HttpUtility.UrlEncode(url);            //用户授权后的Code            CodeUrl = $"http://www.php.cn/{Appid}&redirect_uri={value}&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect";            System.Web.HttpContext.Current.Response.Redirect(CodeUrl);//先跳转到微信的服务器，取得code后会跳回来这页面的        }

其中ShouQuanAccessToken方法

 /// <summary>        //用户授权之后，获取授权的Access_Token与基本的Access_Token是不同的(推荐方法）        /// </summary>        /// <param name="code">用户授权之后的Code</param>        /// <returns></returns>        public static OauthAccessToken ShouQuanAccessToken(string code)        {            var url = $"http://www.php.cn/{Appid}&secret={Secret}&code={code}&grant_type=authorization_code";            string gethtml = MyHttpHelper.HttpGet(url);            OauthAccessToken ac = new OauthAccessToken();            ac = JsonHelpers.ToObject<OauthAccessToken>(gethtml);            return ac;        }

用户实体

public class OauthAccessToken        {            public string access_token { get; set; }            public string expires_in { get; set; }            public string refresh_token { get; set; }            public string openid { get; set; }            public string scope { get; set; }        }

其中用到的MyHttpHelper公众类如下

 /// <summary>    /// Http连接操作帮助类    /// </summary>    public class HttpHelpers    {        #region 预定义方法或者变更        //默认的编码        private Encoding encoding = Encoding.Default;        //Post数据编码        private Encoding postencoding = Encoding.Default;        //HttpWebRequest对象用来发起请求        private HttpWebRequest request = null;        //获取影响流的数据对象        private HttpWebResponse response = null;        /// <summary>        /// 根据相传入的数据，得到相应页面数据        /// </summary>        /// <param name="item">参数类对象</param>        /// <returns>返回HttpResult类型</returns>        public HttpResult GetHtml(HttpItem item)        {            //返回参数            HttpResult result = new HttpResult();            try            {                //准备参数                SetRequest(item);            }            catch (Exception ex)            {                return new HttpResult() { Cookie = string.Empty, Header = null, Html = ex.Message, StatusDescription = "配置参数时出错：" + ex.Message };            }            try            {                #region 得到请求的response                using (response = (HttpWebResponse)request.GetResponse())                {                    result.StatusCode = response.StatusCode;                    result.StatusDescription = response.StatusDescription;                    result.Header = response.Headers;                    if (response.Cookies != null) result.CookieCollection = response.Cookies;                    if (response.Headers["set-cookie"] != null) result.Cookie = response.Headers["set-cookie"];                    byte[] ResponseByte = null;                    using (MemoryStream _stream = new MemoryStream())                    {                        //GZIIP处理                        if (response.ContentEncoding != null && response.ContentEncoding.Equals("gzip", StringComparison.InvariantCultureIgnoreCase))                        {                            //开始读取流并设置编码方式                            new GZipStream(response.GetResponseStream(), CompressionMode.Decompress).CopyTo(_stream, 10240);                        }                        else                        {                            //开始读取流并设置编码方式                            response.GetResponseStream().CopyTo(_stream, 10240);                        }                        //获取Byte                        ResponseByte = _stream.ToArray();                    }                    if (ResponseByte != null & ResponseByte.Length > 0)                    {                        //是否返回Byte类型数据                        if (item.ResultType == ResultType.Byte) result.ResultByte = ResponseByte;                        //从这里开始我们要无视编码了                        if (encoding == null)                        {                            Match meta = Regex.Match(Encoding.Default.GetString(ResponseByte), "<meta([^<]*)charset=([^<]*)[/"']", RegexOptions.IgnoreCase);                            string c = (meta.Groups.Count > 1) ? meta.Groups[2].Value.ToLower().Trim() : string.Empty;                            if (c.Length > 2)                            {                                try                                {                                    if (c.IndexOf(" ") > 0) c = c.Substring(0, c.IndexOf(" "));                                    encoding = Encoding.GetEncoding(c.Replace("/"", "").Replace("'", "").Replace(";", "").Replace("iso-8859-1", "gbk").Trim());                                }                                catch                                {                                    if (string.IsNullOrEmpty(response.CharacterSet)) encoding = Encoding.UTF8;                                    else encoding = Encoding.GetEncoding(response.CharacterSet);                                }                            }                            else                            {                                if (string.IsNullOrEmpty(response.CharacterSet)) encoding = Encoding.UTF8;                                else encoding = Encoding.GetEncoding(response.CharacterSet);                            }                        }                        //得到返回的HTML                        result.Html = encoding.GetString(ResponseByte);                    }                    else                    {                        //得到返回的HTML                        //result.Html = "本次请求并未返回任何数据";                        result.Html = "";                    }                }                #endregion            }            catch (WebException ex)            {                //这里是在发生异常时返回的错误信息                response = (HttpWebResponse)ex.Response;                result.Html = ex.Message;                if (response != null)                {                    result.StatusCode = response.StatusCode;                    result.StatusDescription = response.StatusDescription;                }            }            catch (Exception ex)            {                result.Html = ex.Message;            }            if (item.IsToLower) result.Html = result.Html.ToLower();            return result;        }        /// <summary>        /// 为请求准备参数        /// </summary>        ///<param name="item">参数列表</param>        private void SetRequest(HttpItem item)        {            // 验证证书            SetCer(item);            //设置Header参数            if (item.Header != null && item.Header.Count > 0) foreach (string key in item.Header.AllKeys)                {                    request.Headers.Add(key, item.Header[key]);                }            // 设置代理             //SetProxy(item);            if (item.ProtocolVersion != null) request.ProtocolVersion = item.ProtocolVersion;            request.ServicePoint.Expect100Continue = item.Expect100Continue;            //请求方式Get或者Post            request.Method = item.Method;            request.Timeout = item.Timeout;            request.KeepAlive = item.KeepAlive;            request.ReadWriteTimeout = item.ReadWriteTimeout;            if (!string.IsNullOrWhiteSpace(item.Host))            {                request.Host = item.Host;            }            //Accept            request.Accept = item.Accept;            //ContentType返回类型            request.ContentType = item.ContentType;            //UserAgent客户端的访问类型，包括浏览器版本和操作系统信息            request.UserAgent = item.UserAgent;            // 编码            encoding = item.Encoding;            //设置安全凭证            request.Credentials = item.ICredentials;            //设置Cookie            SetCookie(item);            //来源地址            request.Referer = item.Referer;            //是否执行跳转功能            request.AllowAutoRedirect = item.Allowautoredirect;            //设置Post数据            SetPostData(item);            //设置最大连接            if (item.Connectionlimit > 0) request.ServicePoint.ConnectionLimit = item.Connectionlimit;        }        /// <summary>        /// 设置证书        /// </summary>        /// <param name="item"></param>        private void SetCer(HttpItem item)        {            if (!string.IsNullOrWhiteSpace(item.CerPath))            {                //这一句一定要写在创建连接的前面。使用回调的方法进行证书验证。                ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);                //初始化对像，并设置请求的URL地址                request = (HttpWebRequest)WebRequest.Create(item.URL);                SetCerList(item);                //将证书添加到请求里                request.ClientCertificates.Add(new X509Certificate(item.CerPath));            }            else            {                //初始化对像，并设置请求的URL地址                request = (HttpWebRequest)WebRequest.Create(item.URL);                SetCerList(item);            }        }        /// <summary>        /// 设置多个证书        /// </summary>        /// <param name="item"></param>        private void SetCerList(HttpItem item)        {            if (item.ClentCertificates != null && item.ClentCertificates.Count > 0)            {                foreach (X509Certificate c in item.ClentCertificates)                {                    request.ClientCertificates.Add(c);                }            }        }        /// <summary>        /// 设置Cookie        /// </summary>        /// <param name="item">Http参数</param>        private void SetCookie(HttpItem item)        {            if (!string.IsNullOrEmpty(item.Cookie)) request.Headers[HttpRequestHeader.Cookie] = item.Cookie;            //设置CookieCollection            if (item.ResultCookieType == ResultCookieType.CookieCollection)            {                request.CookieContainer = new CookieContainer();                if (item.CookieCollection != null && item.CookieCollection.Count > 0)                    request.CookieContainer.Add(item.CookieCollection);            }        }        /// <summary>        /// 设置Post数据        /// </summary>        /// <param name="item">Http参数</param>        private void SetPostData(HttpItem item)        {            //验证在得到结果时是否有传入数据            if (request.Method.Trim().ToLower().Contains("post"))            {                if (item.PostEncoding != null)                {                    postencoding = item.PostEncoding;                }                byte[] buffer = null;                //写入Byte类型                if (item.PostDataType == PostDataType.Byte && item.PostdataByte != null && item.PostdataByte.Length > 0)                {                    //验证在得到结果时是否有传入数据                    buffer = item.PostdataByte;                }//写入文件                else if (item.PostDataType == PostDataType.FilePath && !string.IsNullOrWhiteSpace(item.Postdata))                {                    StreamReader r = new StreamReader(item.Postdata, postencoding);                    buffer = postencoding.GetBytes(r.ReadToEnd());                    r.Close();                } //写入字符串                else if (!string.IsNullOrWhiteSpace(item.Postdata))                {                    buffer = postencoding.GetBytes(item.Postdata);                }                if (buffer != null)                {                    request.ContentLength = buffer.Length;                    request.GetRequestStream().Write(buffer, 0, buffer.Length);                }            }        }        /// <summary>        /// 设置代理        /// </summary>        /// <param name="item">参数对象</param>        private void SetProxy(HttpItem item)        {            bool isIeProxy = item.ProxyIp.ToLower().Contains("ieproxy");            if (!string.IsNullOrWhiteSpace(item.ProxyIp) && !isIeProxy)            {                //设置代理服务器                if (item.ProxyIp.Contains(":"))                {                    string[] plist = item.ProxyIp.Split(':');                    WebProxy myProxy = new WebProxy(plist[0].Trim(), Convert.ToInt32(plist[1].Trim()));                    //建议连接                    myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd);                    //给当前请求对象                    request.Proxy = myProxy;                }                else                {                    WebProxy myProxy = new WebProxy(item.ProxyIp, false);                    //建议连接                    myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd);                    //给当前请求对象                    request.Proxy = myProxy;                }            }            else if (isIeProxy)            {                //设置为IE代理            }            else            {                request.Proxy = item.WebProxy;            }        }        /// <summary>        /// 回调验证证书问题        /// </summary>        /// <param name="sender">流对象</param>        /// <param name="certificate">证书</param>        /// <param name="chain">X509Chain</param>        /// <param name="errors">SslPolicyErrors</param>        /// <returns>bool</returns>        public bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { return true; }        #endregion    }    /// <summary>    /// Http请求参考类    /// </summary>    public class HttpItem    {        /// <summary>        /// 请求URL必须填写        /// </summary>        public string URL { get; set; }        string _Method = "GET";        /// <summary>        /// 请求方式默认为GET方式,当为POST方式时必须设置Postdata的值        /// </summary>        public string Method        {            get { return _Method; }            set { _Method = value; }        }        int _Timeout = 100000;        /// <summary>        /// 默认请求超时时间        /// </summary>        public int Timeout        {            get { return _Timeout; }            set { _Timeout = value; }        }        int _ReadWriteTimeout = 30000;        /// <summary>        /// 默认写入Post数据超时间        /// </summary>        public int ReadWriteTimeout        {            get { return _ReadWriteTimeout; }            set { _ReadWriteTimeout = value; }        }        /// <summary>        /// 设置Host的标头信息        /// </summary>        public string Host { get; set; }        Boolean _KeepAlive = true;        /// <summary>        ///  获取或设置一个值，该值指示是否与 Internet 资源建立持久性连接默认为true。        /// </summary>        public Boolean KeepAlive        {            get { return _KeepAlive; }            set { _KeepAlive = value; }        }        string _Accept = "text/html, application/xhtml+xml, */*";        /// <summary>        /// 请求标头值 默认为text/html, application/xhtml+xml, */*        /// </summary>        public string Accept        {            get { return _Accept; }            set { _Accept = value; }        }        string _ContentType = "text/html";        /// <summary>        /// 请求返回类型默认 text/html        /// </summary>        public string ContentType        {            get { return _ContentType; }            set { _ContentType = value; }        }        string _UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)";        /// <summary>        /// 客户端访问信息默认Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)        /// </summary>        public string UserAgent        {            get { return _UserAgent; }            set { _UserAgent = value; }        }        /// <summary>        /// 返回数据编码默认为NUll,可以自动识别,一般为utf-8,gbk,gb2312        /// </summary>        public Encoding Encoding { get; set; }        private PostDataType _PostDataType = PostDataType.String;        /// <summary>        /// Post的数据类型        /// </summary>        public PostDataType PostDataType        {            get { return _PostDataType; }            set { _PostDataType = value; }        }        /// <summary>        /// Post请求时要发送的字符串Post数据        /// </summary>        public string Postdata { get; set; }        /// <summary>        /// Post请求时要发送的Byte类型的Post数据        /// </summary>        public byte[] PostdataByte { get; set; }        /// <summary>        /// Cookie对象集合        /// </summary>        public CookieCollection CookieCollection { get; set; }        /// <summary>        /// 请求时的Cookie        /// </summary>        public string Cookie { get; set; }        /// <summary>        /// 来源地址，上次访问地址        /// </summary>        public string Referer { get; set; }        /// <summary>        /// 证书绝对路径        /// </summary>        public string CerPath { get; set; }        /// <summary>        /// 设置代理对象，不想使用IE默认配置就设置为Null，而且不要设置ProxyIp        /// </summary>        public WebProxy WebProxy { get; set; }        private Boolean isToLower = false;        /// <summary>        /// 是否设置为全文小写，默认为不转化        /// </summary>        public Boolean IsToLower        {            get { return isToLower; }            set { isToLower = value; }        }        private Boolean allowautoredirect = false;        /// <summary>        /// 支持跳转页面，查询结果将是跳转后的页面，默认是不跳转        /// </summary>        public Boolean Allowautoredirect        {            get { return allowautoredirect; }            set { allowautoredirect = value; }        }        private int connectionlimit = 1024;        /// <summary>        /// 最大连接数        /// </summary>        public int Connectionlimit        {            get { return connectionlimit; }            set { connectionlimit = value; }        }        /// <summary>        /// 代理Proxy 服务器用户名        /// </summary>        public string ProxyUserName { get; set; }        /// <summary>        /// 代理 服务器密码        /// </summary>        public string ProxyPwd { get; set; }        /// <summary>        /// 代理 服务IP,如果要使用IE代理就设置为ieproxy        /// </summary>        public string ProxyIp { get; set; }        private ResultType resulttype = ResultType.String;        /// <summary>        /// 设置返回类型String和Byte        /// </summary>        public ResultType ResultType        {            get { return resulttype; }            set { resulttype = value; }        }        private WebHeaderCollection header = new WebHeaderCollection();        /// <summary>        /// header对象        /// </summary>        public WebHeaderCollection Header        {            get { return header; }            set { header = value; }        }        /// <summary>        //     获取或设置用于请求的 HTTP 版本。返回结果:用于请求的 HTTP 版本。默认为 System.Net.HttpVersion.Version11。        /// </summary>        public Version ProtocolVersion { get; set; }        private Boolean _expect100continue = true;        /// <summary>        ///  获取或设置一个 System.Boolean 值，该值确定是否使用 100-Continue 行为。如果 POST 请求需要 100-Continue 响应，则为 true；否则为 false。默认值为 true。        /// </summary>        public Boolean Expect100Continue        {            get { return _expect100continue; }            set { _expect100continue = value; }        }        /// <summary>        /// 设置509证书集合        /// </summary>        public X509CertificateCollection ClentCertificates { get; set; }        /// <summary>        /// 设置或获取Post参数编码,默认的为Default编码        /// </summary>        public Encoding PostEncoding { get; set; }        private ResultCookieType _ResultCookieType = ResultCookieType.String;        /// <summary>        /// Cookie返回类型,默认的是只返回字符串类型        /// </summary>        public ResultCookieType ResultCookieType        {            get { return _ResultCookieType; }            set { _ResultCookieType = value; }        }        private ICredentials _ICredentials = CredentialCache.DefaultCredentials;        /// <summary>        /// 获取或设置请求的身份验证信息。        /// </summary>        public ICredentials ICredentials        {            get { return _ICredentials; }            set { _ICredentials = value; }        }    }    /// <summary>    /// Http返回参数类    /// </summary>    public class HttpResult    {        /// <summary>        /// Http请求返回的Cookie        /// </summary>        public string Cookie { get; set; }        /// <summary>        /// Cookie对象集合        /// </summary>        public CookieCollection CookieCollection { get; set; }        /// <summary>        /// 返回的String类型数据 只有ResultType.String时才返回数据，其它情况为空        /// </summary>        public string Html { get; set; }        /// <summary>        /// 返回的Byte数组 只有ResultType.Byte时才返回数据，其它情况为空        /// </summary>        public byte[] ResultByte { get; set; }        /// <summary>        /// header对象        /// </summary>        public WebHeaderCollection Header { get; set; }        /// <summary>        /// 返回状态说明        /// </summary>        public string StatusDescription { get; set; }        /// <summary>        /// 返回状态码,默认为OK        /// </summary>        public HttpStatusCode StatusCode { get; set; }    }    /// <summary>    /// 返回类型    /// </summary>    public enum ResultType    {        /// <summary>        /// 表示只返回字符串 只有Html有数据        /// </summary>        String,        /// <summary>        /// 表示返回字符串和字节流 ResultByte和Html都有数据返回        /// </summary>        Byte    }    /// <summary>    /// Post的数据格式默认为string    /// </summary>    public enum PostDataType    {        /// <summary>        /// 字符串类型，这时编码Encoding可不设置        /// </summary>        String,        /// <summary>        /// Byte类型，需要设置PostdataByte参数的值编码Encoding可设置为空        /// </summary>        Byte,        /// <summary>        /// 传文件，Postdata必须设置为文件的绝对路径，必须设置Encoding的值        /// </summary>        FilePath    }    /// <summary>    /// Cookie返回类型    /// </summary>    public enum ResultCookieType    {        /// <summary>        /// 只返回字符串类型的Cookie        /// </summary>        String,        /// <summary>        /// CookieCollection格式的Cookie集合同时也返回String类型的cookie        /// </summary>        CookieCollection    }    /// <summary>HttpHelper的2次封装函数 作者：    /// </summary>    public class MyHttpHelper    {        #region 公共函数        /// <summary>返回 HTML 字符串的编码结果</summary>        /// <param name="str">字符串</param>        /// <returns>编码结果</returns>        public static string HtmlEncode(string str)        {            if (string.IsNullOrEmpty(str))            {                return "";            }            return str.Length > 0 ? HttpUtility.HtmlEncode(str) : "";        }        /// <summary>返回 HTML 字符串的解码结果</summary>        /// <param name="str">字符串</param>        /// <returns>解码结果</returns>        public static string HtmlDecode(string str)        {            if (string.IsNullOrEmpty(str))            {                return "";            }            return str.Length > 0 ? HttpUtility.HtmlDecode(str) : "";        }        /// <summary>        /// 根据指定的编码对RUl进行解码        /// </summary>        /// <param name="str">要解码的字符串</param>        /// <param name="encoding">要进行解码的编码方式</param>        /// <returns></returns>        public static string UrlDecode(string str, Encoding encoding = null)        {            if (string.IsNullOrEmpty(str))            {                return "";            }            if (str.Length == 0)            {                return "";            }            if (encoding == null)            {                return HttpUtility.UrlDecode(str);            }            else            {                return HttpUtility.UrlDecode(str, encoding);            }        }        /// <summary>根据指定的编码对URL进行编码</summary>        /// <param name="str">要编码的URL</param>        /// <param name="encoding">要进行编码的编码方式</param>        /// <returns></returns>        public static string UrlEncode(string str, Encoding encoding = null)        {            if (string.IsNullOrEmpty(str))            {                return "";            }            if (str.Length == 0)            {                return "";            }            if (encoding == null)            {                return HttpUtility.UrlEncode(str);            }            else            {                return HttpUtility.UrlEncode(str, encoding);            }        }        /// <summary>        /// 根据 charSet 返回 Encoding        /// </summary>        /// <param name="charSet">"gb2312" or "utf-8",默认: "" ==  "utf-8"</param>        /// <returns></returns>        public static Encoding GetEncoding(string charSet)        {            Encoding en = Encoding.Default;            if (charSet == "gb2312")            {                en = Encoding.GetEncoding("gb2312");            }            else if (charSet == "utf-8")            {                en = Encoding.UTF8;            }            return en;        }        #endregion        #region Post        /// <summary>HTTP Get方式请求数据</summary>        /// <param name="url">URL</param>        /// <param name="param">user=123123 & pwd=1231313"</param>        /// <param name="charSet">"gb2312" or "utf-8",默认: "" ==  "utf-8"</param>        /// <returns></returns>        public static string HttpPost(string url, string param, string charSet = "utf-8")        {            HttpHelpers http = new HttpHelpers();            HttpItem item = new HttpItem()            {                URL = url,                Encoding = GetEncoding(charSet),//编码格式（utf-8,gb2312,gbk）     可选项 默认类会自动识别                Method = "post",//URL     可选项 默认为Get                Postdata = param            };            //得到HTML代码            HttpResult result = http.GetHtml(item);            //取出返回的Cookie            //string cookie = result.Cookie;            //返回的Html内容            string html = result.Html;            if (result.StatusCode == System.Net.HttpStatusCode.OK)            {                return html;            }            //string statusCodeDescription = result.StatusDescription;            return "";        }        #endregion        #region Get        /// <summary>HTTP Get方式请求数据</summary>        /// <param name="url">URL</param>        /// <param name="charSet">"gb2312" or "utf-8",默认: "" ==  "utf-8"</param>        /// <returns></returns>        public static string HttpGet(string url, string charSet = "utf-8")        {            HttpHelpers http = new HttpHelpers();            HttpItem item = new HttpItem()            {                URL = url,                Encoding = GetEncoding(charSet),                Method = "get"            };            //得到HTML代码            HttpResult result = http.GetHtml(item);            //取出返回的Cookie            //string cookie = result.Cookie;            //返回的Html内容            string html = result.Html;            if (result.StatusCode == System.Net.HttpStatusCode.OK)            {                return html;            }            //string statusCodeDescription = result.StatusDescription;            return "";        }        /// <summary>POST客服消息/summary>        /// <param name="url">URL</param>        /// <param name="postData">内容</param>        /// <returns>消息状态</returns>        public static string GetPage(string posturl, string postData)        {            Stream outstream = null;            Stream instream = null;            StreamReader sr = null;            HttpWebResponse response = null;            HttpWebRequest request = null;            Encoding encoding = Encoding.UTF8;            byte[] data = encoding.GetBytes(postData);            // 准备请求...              try            {                // 设置参数                  request = WebRequest.Create(posturl) as HttpWebRequest;                CookieContainer cookieContainer = new CookieContainer();                request.CookieContainer = cookieContainer;                request.AllowAutoRedirect = true;                request.Method = "POST";                request.ContentType = "application/x-www-form-urlencoded";                request.ContentLength = data.Length;                outstream = request.GetRequestStream();                outstream.Write(data, 0, data.Length);                outstream.Close();                //发送请求并获取相应回应数据                  response = request.GetResponse() as HttpWebResponse;                //直到request.GetResponse()程序才开始向目标网页发送Post请求                  instream = response.GetResponseStream();                sr = new StreamReader(instream, encoding);                //返回结果网页（html）代码                  string content = sr.ReadToEnd();                string err = string.Empty;                return content;            }            catch (Exception ex)            {                string err = ex.Message;                return err;            }        }        #endregion    }

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封装的JsonHelpers类如下

 #region 通用        /// <summary>检查字符串是否json格式</summary>        /// <param name="jText"></param>        /// <returns></returns>        public static bool IsJson(string jText)        {            if (string.IsNullOrEmpty(jText) || jText.Length < 3)            {                return false;            }            if (jText.Substring(0, 2) == "{/"" || jText.Substring(0, 3) == "[{/"")            {                return true;            }            return false;        }        /// <summary>检查字符串是否json格式数组</summary>        /// <param name="jText"></param>        /// <returns></returns>        public static bool IsJsonRs(string jText)        {            if (string.IsNullOrEmpty(jText) || jText.Length < 3)            {                return false;            }            if (jText.Substring(0, 3) == "[{/"")            {                return true;            }            return false;        }        /// <summary>格式化 json</summary>        /// <param name="jText"></param>        /// <returns></returns>        public static string Fmt_Null(string jText)        {            return StringHelper.ReplaceString(jText, ":null,", ":/"/",", true);        }        /// <summary>格式化 json ，删除左右二边的[]</summary>        /// <param name="jText"></param>        /// <returns></returns>        public static string Fmt_Rs(string jText)        {            jText = jText.Trim();            jText = jText.Trim('[');            jText = jText.Trim(']');            return jText;        }        #endregion        #region Json序列化        /// <summary>序列化</summary>        /// <param name="obj">object </param>        /// <returns></returns>        public static string ToJson(object obj)        {            var idtc = new Newtonsoft.Json.Converters.IsoDateTimeConverter { DateTimeFormat = "yyyy-MM-dd hh:mm:ss" };            return JsonConvert.SerializeObject(obj, idtc);        }        /// <summary>序列化--sql</summary>        /// <param name="dt">DataTable</param>        /// <returns></returns>           public static string ToJson_FromSQL(DataTable dt)        {            string ss = ToJson(dt);            dt.Dispose();            return ss;        }        #endregion        #region Json反序列化        /// <summary>反序列化</summary>        /// <param name="jText"></param>        /// <returns></returns>              public static DataTable ToDataTable(string jText)        {            if (string.IsNullOrEmpty(jText))            {                return null;            }            else            {                try                {                    return JsonConvert.DeserializeObject<DataTable>(jText);                }                catch                {                    return null;                }            }        }        /// <summary>反序列化</summary>        /// <typeparam name="T">类型</typeparam>        /// <param name="jText">json字符串</param>        /// <returns>类型数据</returns>        public static T ToObject<T>(string jText)        {            return (T)JsonConvert.DeserializeObject(jText, typeof(T));        }        #endregion

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其中，如果是VS2015以下的，可以将url字符串改成string.format("")方式

调用取值的方式

微信公众号开发网页授权获取用户基本信息

效果展示

点击公众号链接效果如下：

微信公众号开发网页授权获取用户基本信息

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微信公众号开发网页授权获取用户基本信息

静默授权

演示效果

网页授权流程

效果展示