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

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

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

效果展示

点击公众号链接效果如下：

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