微信公衆號開發之網頁受權獲取用戶基本信息

時間 2019-11-24

標籤微信公衆號開發網頁受權獲取用戶基本信息欄目 HTML 简体版

原文原文鏈接

前言

若是用戶在微信客戶端中訪問第三方網頁，公衆號能夠經過微信網頁受權機制，來獲取用戶基本信息，進而實現業務邏輯。html

注意：網頁受權兩種方式sql

更多網頁受權請查閱官網文檔：網頁受權數據庫

靜默受權

靜默受權便可以在用戶關注的的時候，獲取用戶基本信息，此過程用戶無感知。json

第一步，經過工廠類轉發請求api

 　　　　　　
        /// <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);//經過工廠類分發過來的請求，匹配到關注事件
                        break;
                    case ("unsubscribe"):
                        response = Un_SubscribeEventHandler(em);
                        break;
                    case "click":
                        response = ClickEventHandler(em);
                        break;
                }
            }
            return response;
        }

第二步，寫用戶關注事件數組

　　　　　/// <summary>
        /// 用戶關注
        /// </summary>
        /// <param name="em"></param>
        /// <returns></returns>
        public string SubscribeEventHandler(EventMessage em)
        {
            //回覆歡迎消息
            WeChat.Messages.TextMessage tm = new WeChat.Messages.TextMessage();
            tm.ToUserName = em.FromUserName;//OpenId
            tm.FromUserName = em.ToUserName;//公衆號原始Id
            tm.CreateTime = Common.GetNowTime();
            tm.Content = "歡迎您關注****，我是服務小二，有事就問我～\n\n";
            tm.GenerateContent();
            //若有業務須要，可在此處先判斷該用戶是否已關注
　　　　　　　//此處獲得OpenId
　　　　　　　show.ShowUserInfo(em.FromUserName,em.ToUserName);

 　　　　　　return tm.GenerateContent();
 }

第三步，根據獲得的OpenId及accesstoken，便可獲取用戶基本信息（此處演示是將該用戶存入數據庫中）瀏覽器

    　　 /// <summary>
        /// 根據OpenId將此條粉絲記錄插入數據庫中
        /// </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();
                //獲取accesstoken，獲取用戶基本信息須要Openid和accesstoken便可
　　　　　　　　 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;//是否關注 1 是關注 
                    nickname = root.Element("nickname").Value; //暱稱
                    sex = root.Element("sex").Value; //性別什麼
                    headimgurl = root.Element("headimgurl").Value; //頭像url
                    province = root.Element("province").Value;//地區 
                    country = root.Element("country").Value;
                    language = root.Element("language").Value;
                    subscribe_time = root.Element("subscribe_time").Value;
                    DateTime create_time = Common.GetTime(subscribe_time);//將時間戳轉換爲當前時間
                    city = root.Element("city").Value;
                    user.OpenID = FromUserName;//OpenID即粉絲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;
                    //將user實體存入數據庫中
                    bool show = _user.Add(user);
                    #endregion
                }
            }
            catch
            {
                throw (new ArgumentNullException());
            }

        }

上面代碼中 AccessToken的實現，新建一個Context類便可安全

    private static DateTime GetAccessToken_Time;
        /// <summary>
        /// 過時時間爲7200秒
        /// </summary>
        private static int Expires_Period = 7200;
        /// <summary>
        /// 
        /// </summary>
        private static string mAccessToken;

        public static string AppID = "換成相應公衆號的便可";
        public static string AppSecret = "換成相應公衆號的便可";
        /// <summary>
        /// 調用獲取ACCESS_TOKEN,包含判斷是否過時
        /// </summary>
        public static string AccessToken
        {
            get
            {
                //若是爲空，或者過時，須要從新獲取
                if (string.IsNullOrEmpty(mAccessToken) || HasExpired())
                {
                    //獲取access_token
                    mAccessToken = GetAccessToken(AppID, AppSecret);
                }

                return mAccessToken;
            }
        }
        /// <summary>
        /// 獲取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>
        /// 判斷Access_token是否過時
        /// </summary>
        /// <returns>bool</returns>
        private static bool HasExpired()
        {
            if (GetAccessToken_Time != null)
            {
                //過時時間，容許有必定的偏差，一分鐘。獲取時間消耗
                if (DateTime.Now > GetAccessToken_Time.AddSeconds(Expires_Period).AddSeconds(-60))
                {
                    return true;
                }
            }
            return false;
        }

GetData的實現

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

ParseJson的實現

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

關於第三步的 HttpUtility類中還有一些其餘公用幫助方法，在這裏一併放出，調用便可服務器

/// <summary>
        /// 發送請求
        /// </summary>
        /// <param name="url">Url地址</param>
        /// <param name="data">數據</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>
        /// 發送請求
        /// </summary>
        /// <param name="url">Url地址</param>
        /// <param name="method">方法（post或get）</param>
        /// <param name="method">數據類型</param>
        /// <param name="requestData">數據</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>
        /// 發送請求
        /// </summary>
        /// <param name="url">Url地址</param>
        /// <param name="method">方法（post或get）</param>
        /// <param name="method">數據類型</param>
        /// <param name="requestData">數據</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

順便提下上文中用到的User類以下微信

public class Users
    {
        /// <summary>
        /// 全局憑證惟一Id
        /// </summary>
        public string OpenID { get; set; }

        /// <summary>
        /// 公衆號Id
        /// </summary>
        public string PublicId { get; set; }
        /// <summary>
        /// 用戶Id
        /// </summary>
        public string UserID { get; set; }
        /// <summary>
        /// 暱稱
        /// </summary>
        public string NickName { get; set; }

        /// <summary>
        /// 性別 1是男 0是女
        /// </summary>
        public int Sex { get; set; }

        /// <summary>
        /// 是否關注 1是關注 
        /// </summary>
        public int Subscribe { get; set; }
        /// <summary>
        /// 國家
        /// </summary>
        public string Country { get; set; }

        /// <summary>
        /// 地區
        /// </summary>
        public string Province { get; set; }
        /// <summary>
        /// 城市
        /// </summary>
        public string City { get; set; }
        /// <summary>
        /// 關注時間
        /// </summary>
        public DateTime CreateDate { get; set; }
        /// <summary>
        /// 用戶頭像
        /// </summary>
        public string HeadimgUrl { get; set; }
        /// <summary>
        /// 第三方平臺Id，可爲空
        /// </summary>
        public string UnionID { get; set; }
        /// <summary>
        /// 用戶取消關注時間
        /// </summary>
        public DateTime Un_Subscribe_Time { get; set; }
    }

演示效果

數據庫中此時是存在10條數據的，當點擊關注此公衆號的時候，就將此用戶的基本信息存入數據庫了，數據庫刷新後變成11條數據

網頁受權流程

具體介紹依然可參考官網文檔：網頁受權

第一步，判斷該用戶是否獲取受權，若沒有受權，則跳轉至受權頁面，若受權，則獲取基本信息

核心代碼

        /// <summary>
        /// 獲取受權用戶的基本信息,包括頭像，姓名，等等(推薦方法）
        /// </summary>
        /// <param name="accessToken">用戶受權以後的accessToken</param>
        /// <param name="openid">用戶受權以後的openid</param>
        /// <returns></returns>
        public static ShouQuanWeiXinUserInfo GetShouQuanMessage()
        {
            //先判斷是否有獲取到用戶受權的Code,HttpContext.Current.Session["ShouquanCode"]
            if (HttpContext.Current.Session["ShouquanCode"] == null|| HttpContext.Current.Session["ShouquanCode"].ToString()=="")
            {
                HttpContext.Current.Session["ShouquanCode"] = "123";
                //用戶受權的Code
                GetShouQuanCodeUrl(HttpContext.Current.Request.Url.AbsoluteUri);
            }
            else if(HttpContext.Current.Request.QueryString["code"] == null || HttpContext.Current.Request.QueryString["code"] == "")
            {
                //用戶受權的Code
                GetShouQuanCodeUrl(HttpContext.Current.Request.Url.AbsoluteUri);
            }
            else
            {
                var model = ShouQuanAccessToken(HttpContext.Current.Request.QueryString["code"]);
                var url =
                    $"https://api.weixin.qq.com/sns/userinfo?access_token={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，用戶受權的code方法以下：

 /// <summary>
        /// 從新獲取用戶受權的Code,能夠獲取用戶的基本信息（頭像，姓名，等等）(推薦用的方法）
        /// </summary>
        /// <param name="url">目標Url</param>
        /// <returns></returns>
        public static void GetShouQuanCodeUrl(string url)
        {
            string CodeUrl = "";
            //加密過的url
            string value = HttpUtility.UrlEncode(url);
            //用戶受權後的Code
            CodeUrl = $"https://open.weixin.qq.com/connect/oauth2/authorize?appid={Appid}&redirect_uri={value}&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect";
            System.Web.HttpContext.Current.Response.Redirect(CodeUrl);//先跳轉到微信的服務器，取得code後會跳回來這頁面的

        }

其中ShouQuanAccessToken方法

 /// <summary>
        //用戶受權以後，獲取受權的Access_Token與基本的Access_Token是不一樣的(推薦方法）
        /// </summary>
        /// <param name="code">用戶受權以後的Code</param>
        /// <returns></returns>
        public static OauthAccessToken ShouQuanAccessToken(string code)
        {
            var url = $"https://api.weixin.qq.com/sns/oauth2/access_token?appid={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;
        }

用戶實體

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公衆類以下

 /// <summary>
    /// Http鏈接操做幫助類
    /// </summary>
    public class HttpHelpers
    {
        #region 預約義方法或者變動
        //默認的編碼
        private Encoding encoding = Encoding.Default;
        //Post數據編碼
        private Encoding postencoding = Encoding.Default;
        //HttpWebRequest對象用來發起請求
        private HttpWebRequest request = null;
        //獲取影響流的數據對象
        private HttpWebResponse response = null;
        /// <summary>
        /// 根據相傳入的數據，獲得相應頁面數據
        /// </summary>
        /// <param name="item">參數類對象</param>
        /// <returns>返回HttpResult類型</returns>
        public HttpResult GetHtml(HttpItem item)
        {
            //返回參數
            HttpResult result = new HttpResult();
            try
            {
                //準備參數
                SetRequest(item);
            }
            catch (Exception ex)
            {
                return new HttpResult() { Cookie = string.Empty, Header = null, Html = ex.Message, StatusDescription = "配置參數時出錯：" + ex.Message };
            }
            try
            {
                #region 獲得請求的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處理
                        if (response.ContentEncoding != null && response.ContentEncoding.Equals("gzip", StringComparison.InvariantCultureIgnoreCase))
                        {
                            //開始讀取流並設置編碼方式
                            new GZipStream(response.GetResponseStream(), CompressionMode.Decompress).CopyTo(_stream, 10240);
                        }
                        else
                        {
                            //開始讀取流並設置編碼方式
                            response.GetResponseStream().CopyTo(_stream, 10240);
                        }
                        //獲取Byte
                        ResponseByte = _stream.ToArray();
                    }
                    if (ResponseByte != null & ResponseByte.Length > 0)
                    {
                        //是否返回Byte類型數據
                        if (item.ResultType == ResultType.Byte) result.ResultByte = ResponseByte;
                        //從這裏開始咱們要無視編碼了
                        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);
                            }
                        }
                        //獲得返回的HTML
                        result.Html = encoding.GetString(ResponseByte);
                    }
                    else
                    {
                        //獲得返回的HTML
                        //result.Html = "本次請求並未返回任何數據";
                        result.Html = "";
                    }
                }
                #endregion
            }
            catch (WebException ex)
            {
                //這裏是在發生異常時返回的錯誤信息
                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>
        /// 爲請求準備參數
        /// </summary>
        ///<param name="item">參數列表</param>
        private void SetRequest(HttpItem item)
        {
            // 驗證證書
            SetCer(item);
            //設置Header參數
            if (item.Header != null && item.Header.Count > 0) foreach (string key in item.Header.AllKeys)
                {
                    request.Headers.Add(key, item.Header[key]);
                }

            // 設置代理 
            //SetProxy(item);

            if (item.ProtocolVersion != null) request.ProtocolVersion = item.ProtocolVersion;
            request.ServicePoint.Expect100Continue = item.Expect100Continue;
            //請求方式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返回類型
            request.ContentType = item.ContentType;
            //UserAgent客戶端的訪問類型，包括瀏覽器版本和操做系統信息
            request.UserAgent = item.UserAgent;
            // 編碼
            encoding = item.Encoding;
            //設置安全憑證
            request.Credentials = item.ICredentials;
            //設置Cookie
            SetCookie(item);
            //來源地址
            request.Referer = item.Referer;
            //是否執行跳轉功能
            request.AllowAutoRedirect = item.Allowautoredirect;
            //設置Post數據
            SetPostData(item);
            //設置最大鏈接
            if (item.Connectionlimit > 0) request.ServicePoint.ConnectionLimit = item.Connectionlimit;
        }

        /// <summary>
        /// 設置證書
        /// </summary>
        /// <param name="item"></param>
        private void SetCer(HttpItem item)
        {
            if (!string.IsNullOrWhiteSpace(item.CerPath))
            {
                //這一句必定要寫在建立鏈接的前面。使用回調的方法進行證書驗證。
                ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);
                //初始化對像，並設置請求的URL地址
                request = (HttpWebRequest)WebRequest.Create(item.URL);
                SetCerList(item);
                //將證書添加到請求裏
                request.ClientCertificates.Add(new X509Certificate(item.CerPath));
            }
            else
            {
                //初始化對像，並設置請求的URL地址
                request = (HttpWebRequest)WebRequest.Create(item.URL);
                SetCerList(item);
            }
        }

        /// <summary>
        /// 設置多個證書
        /// </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>
        /// 設置Cookie
        /// </summary>
        /// <param name="item">Http參數</param>
        private void SetCookie(HttpItem item)
        {
            if (!string.IsNullOrEmpty(item.Cookie)) request.Headers[HttpRequestHeader.Cookie] = item.Cookie;
            //設置CookieCollection
            if (item.ResultCookieType == ResultCookieType.CookieCollection)
            {
                request.CookieContainer = new CookieContainer();
                if (item.CookieCollection != null && item.CookieCollection.Count > 0)
                    request.CookieContainer.Add(item.CookieCollection);
            }
        }

        /// <summary>
        /// 設置Post數據
        /// </summary>
        /// <param name="item">Http參數</param>
        private void SetPostData(HttpItem item)
        {
            //驗證在獲得結果時是否有傳入數據
            if (request.Method.Trim().ToLower().Contains("post"))
            {
                if (item.PostEncoding != null)
                {
                    postencoding = item.PostEncoding;
                }
                byte[] buffer = null;
                //寫入Byte類型
                if (item.PostDataType == PostDataType.Byte && item.PostdataByte != null && item.PostdataByte.Length > 0)
                {
                    //驗證在獲得結果時是否有傳入數據
                    buffer = item.PostdataByte;
                }//寫入文件
                else if (item.PostDataType == PostDataType.FilePath && !string.IsNullOrWhiteSpace(item.Postdata))
                {
                    StreamReader r = new StreamReader(item.Postdata, postencoding);
                    buffer = postencoding.GetBytes(r.ReadToEnd());
                    r.Close();
                } //寫入字符串
                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>
        /// 設置代理
        /// </summary>
        /// <param name="item">參數對象</param>
        private void SetProxy(HttpItem item)
        {
            bool isIeProxy = item.ProxyIp.ToLower().Contains("ieproxy");
            if (!string.IsNullOrWhiteSpace(item.ProxyIp) && !isIeProxy)
            {
                //設置代理服務器
                if (item.ProxyIp.Contains(":"))
                {
                    string[] plist = item.ProxyIp.Split(':');
                    WebProxy myProxy = new WebProxy(plist[0].Trim(), Convert.ToInt32(plist[1].Trim()));
                    //建議鏈接
                    myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd);
                    //給當前請求對象
                    request.Proxy = myProxy;
                }
                else
                {
                    WebProxy myProxy = new WebProxy(item.ProxyIp, false);
                    //建議鏈接
                    myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd);
                    //給當前請求對象
                    request.Proxy = myProxy;
                }
            }
            else if (isIeProxy)
            {
                //設置爲IE代理
            }
            else
            {
                request.Proxy = item.WebProxy;
            }
        }
        /// <summary>
        /// 回調驗證證書問題
        /// </summary>
        /// <param name="sender">流對象</param>
        /// <param name="certificate">證書</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請求參考類
    /// </summary>
    public class HttpItem
    {
        /// <summary>
        /// 請求URL必須填寫
        /// </summary>
        public string URL { get; set; }
        string _Method = "GET";
        /// <summary>
        /// 請求方式默認爲GET方式,當爲POST方式時必須設置Postdata的值
        /// </summary>
        public string Method
        {
            get { return _Method; }
            set { _Method = value; }
        }
        int _Timeout = 100000;
        /// <summary>
        /// 默認請求超時時間
        /// </summary>
        public int Timeout
        {
            get { return _Timeout; }
            set { _Timeout = value; }
        }
        int _ReadWriteTimeout = 30000;
        /// <summary>
        /// 默認寫入Post數據超時間
        /// </summary>
        public int ReadWriteTimeout
        {
            get { return _ReadWriteTimeout; }
            set { _ReadWriteTimeout = value; }
        }
        /// <summary>
        /// 設置Host的標頭信息
        /// </summary>
        public string Host { get; set; }
        Boolean _KeepAlive = true;
        /// <summary>
        ///  獲取或設置一個值，該值指示是否與 Internet 資源創建持久性鏈接默認爲true。
        /// </summary>
        public Boolean KeepAlive
        {
            get { return _KeepAlive; }
            set { _KeepAlive = value; }
        }
        string _Accept = "text/html, application/xhtml+xml, */*";
        /// <summary>
        /// 請求標頭值 默認爲text/html, application/xhtml+xml, */*
        /// </summary>
        public string Accept
        {
            get { return _Accept; }
            set { _Accept = value; }
        }
        string _ContentType = "text/html";
        /// <summary>
        /// 請求返回類型默認 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>
        /// 客戶端訪問信息默認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>
        /// 返回數據編碼默認爲NUll,能夠自動識別,通常爲utf-8,gbk,gb2312
        /// </summary>
        public Encoding Encoding { get; set; }
        private PostDataType _PostDataType = PostDataType.String;
        /// <summary>
        /// Post的數據類型
        /// </summary>
        public PostDataType PostDataType
        {
            get { return _PostDataType; }
            set { _PostDataType = value; }
        }
        /// <summary>
        /// Post請求時要發送的字符串Post數據
        /// </summary>
        public string Postdata { get; set; }
        /// <summary>
        /// Post請求時要發送的Byte類型的Post數據
        /// </summary>
        public byte[] PostdataByte { get; set; }
        /// <summary>
        /// Cookie對象集合
        /// </summary>
        public CookieCollection CookieCollection { get; set; }
        /// <summary>
        /// 請求時的Cookie
        /// </summary>
        public string Cookie { get; set; }
        /// <summary>
        /// 來源地址，上次訪問地址
        /// </summary>
        public string Referer { get; set; }
        /// <summary>
        /// 證書絕對路徑
        /// </summary>
        public string CerPath { get; set; }
        /// <summary>
        /// 設置代理對象，不想使用IE默認配置就設置爲Null，並且不要設置ProxyIp
        /// </summary>
        public WebProxy WebProxy { get; set; }
        private Boolean isToLower = false;
        /// <summary>
        /// 是否設置爲全文小寫，默認爲不轉化
        /// </summary>
        public Boolean IsToLower
        {
            get { return isToLower; }
            set { isToLower = value; }
        }
        private Boolean allowautoredirect = false;
        /// <summary>
        /// 支持跳轉頁面，查詢結果將是跳轉後的頁面，默認是不跳轉
        /// </summary>
        public Boolean Allowautoredirect
        {
            get { return allowautoredirect; }
            set { allowautoredirect = value; }
        }
        private int connectionlimit = 1024;
        /// <summary>
        /// 最大鏈接數
        /// </summary>
        public int Connectionlimit
        {
            get { return connectionlimit; }
            set { connectionlimit = value; }
        }
        /// <summary>
        /// 代理Proxy 服務器用戶名
        /// </summary>
        public string ProxyUserName { get; set; }
        /// <summary>
        /// 代理 服務器密碼
        /// </summary>
        public string ProxyPwd { get; set; }
        /// <summary>
        /// 代理 服務IP,若是要使用IE代理就設置爲ieproxy
        /// </summary>
        public string ProxyIp { get; set; }
        private ResultType resulttype = ResultType.String;
        /// <summary>
        /// 設置返回類型String和Byte
        /// </summary>
        public ResultType ResultType
        {
            get { return resulttype; }
            set { resulttype = value; }
        }
        private WebHeaderCollection header = new WebHeaderCollection();
        /// <summary>
        /// header對象
        /// </summary>
        public WebHeaderCollection Header
        {
            get { return header; }
            set { header = value; }
        }
        /// <summary>
        //     獲取或設置用於請求的 HTTP 版本。返回結果:用於請求的 HTTP 版本。默認爲 System.Net.HttpVersion.Version11。
        /// </summary>
        public Version ProtocolVersion { get; set; }
        private Boolean _expect100continue = true;
        /// <summary>
        ///  獲取或設置一個 System.Boolean 值，該值肯定是否使用 100-Continue 行爲。若是 POST 請求須要 100-Continue 響應，則爲 true；不然爲 false。默認值爲 true。
        /// </summary>
        public Boolean Expect100Continue
        {
            get { return _expect100continue; }
            set { _expect100continue = value; }
        }
        /// <summary>
        /// 設置509證書集合
        /// </summary>
        public X509CertificateCollection ClentCertificates { get; set; }
        /// <summary>
        /// 設置或獲取Post參數編碼,默認的爲Default編碼
        /// </summary>
        public Encoding PostEncoding { get; set; }
        private ResultCookieType _ResultCookieType = ResultCookieType.String;
        /// <summary>
        /// Cookie返回類型,默認的是隻返回字符串類型
        /// </summary>
        public ResultCookieType ResultCookieType
        {
            get { return _ResultCookieType; }
            set { _ResultCookieType = value; }
        }
        private ICredentials _ICredentials = CredentialCache.DefaultCredentials;
        /// <summary>
        /// 獲取或設置請求的身份驗證信息。
        /// </summary>
        public ICredentials ICredentials
        {
            get { return _ICredentials; }
            set { _ICredentials = value; }
        }
    }
    /// <summary>
    /// Http返回參數類
    /// </summary>
    public class HttpResult
    {
        /// <summary>
        /// Http請求返回的Cookie
        /// </summary>
        public string Cookie { get; set; }
        /// <summary>
        /// Cookie對象集合
        /// </summary>
        public CookieCollection CookieCollection { get; set; }
        /// <summary>
        /// 返回的String類型數據 只有ResultType.String時才返回數據，其它狀況爲空
        /// </summary>
        public string Html { get; set; }
        /// <summary>
        /// 返回的Byte數組 只有ResultType.Byte時才返回數據，其它狀況爲空
        /// </summary>
        public byte[] ResultByte { get; set; }
        /// <summary>
        /// header對象
        /// </summary>
        public WebHeaderCollection Header { get; set; }
        /// <summary>
        /// 返回狀態說明
        /// </summary>
        public string StatusDescription { get; set; }
        /// <summary>
        /// 返回狀態碼,默認爲OK
        /// </summary>
        public HttpStatusCode StatusCode { get; set; }
    }
    /// <summary>
    /// 返回類型
    /// </summary>
    public enum ResultType
    {
        /// <summary>
        /// 表示只返回字符串 只有Html有數據
        /// </summary>
        String,
        /// <summary>
        /// 表示返回字符串和字節流 ResultByte和Html都有數據返回
        /// </summary>
        Byte
    }
    /// <summary>
    /// Post的數據格式默認爲string
    /// </summary>
    public enum PostDataType
    {
        /// <summary>
        /// 字符串類型，這時編碼Encoding可不設置
        /// </summary>
        String,
        /// <summary>
        /// Byte類型，須要設置PostdataByte參數的值編碼Encoding可設置爲空
        /// </summary>
        Byte,
        /// <summary>
        /// 傳文件，Postdata必須設置爲文件的絕對路徑，必須設置Encoding的值
        /// </summary>
        FilePath
    }
    /// <summary>
    /// Cookie返回類型
    /// </summary>
    public enum ResultCookieType
    {
        /// <summary>
        /// 只返回字符串類型的Cookie
        /// </summary>
        String,
        /// <summary>
        /// CookieCollection格式的Cookie集合同時也返回String類型的cookie
        /// </summary>
        CookieCollection
    }

    /// <summary>HttpHelper的2次封裝函數 做者：
    /// </summary>
    public class MyHttpHelper
    {
        #region 公共函數
        /// <summary>返回 HTML 字符串的編碼結果</summary>
        /// <param name="str">字符串</param>
        /// <returns>編碼結果</returns>
        public static string HtmlEncode(string str)
        {
            if (string.IsNullOrEmpty(str))
            {
                return "";
            }

            return str.Length > 0 ? HttpUtility.HtmlEncode(str) : "";
        }

        /// <summary>返回 HTML 字符串的解碼結果</summary>
        /// <param name="str">字符串</param>
        /// <returns>解碼結果</returns>
        public static string HtmlDecode(string str)
        {
            if (string.IsNullOrEmpty(str))
            {
                return "";
            }

            return str.Length > 0 ? HttpUtility.HtmlDecode(str) : "";
        }

        /// <summary>
        /// 根據指定的編碼對RUl進行解碼
        /// </summary>
        /// <param name="str">要解碼的字符串</param>
        /// <param name="encoding">要進行解碼的編碼方式</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>根據指定的編碼對URL進行編碼</summary>
        /// <param name="str">要編碼的URL</param>
        /// <param name="encoding">要進行編碼的編碼方式</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>
        /// 根據 charSet 返回 Encoding
        /// </summary>
        /// <param name="charSet">"gb2312" or "utf-8",默認: "" ==  "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方式請求數據</summary>
        /// <param name="url">URL</param>
        /// <param name="param">user=123123 & pwd=1231313"</param>
        /// <param name="charSet">"gb2312" or "utf-8",默認: "" ==  "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),//編碼格式（utf-8,gb2312,gbk）     可選項 默認類會自動識別
                Method = "post",//URL     可選項 默認爲Get
                Postdata = param
            };


            //獲得HTML代碼
            HttpResult result = http.GetHtml(item);

            //取出返回的Cookie
            //string cookie = result.Cookie;

            //返回的Html內容
            string html = result.Html;
            if (result.StatusCode == System.Net.HttpStatusCode.OK)
            {
                return html;
            }

            //string statusCodeDescription = result.StatusDescription;
            return "";
        }
        #endregion

        #region Get
        /// <summary>HTTP Get方式請求數據</summary>
        /// <param name="url">URL</param>
        /// <param name="charSet">"gb2312" or "utf-8",默認: "" ==  "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"
            };


            //獲得HTML代碼
            HttpResult result = http.GetHtml(item);

            //取出返回的Cookie
            //string cookie = result.Cookie;

            //返回的Html內容
            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">內容</param>
        /// <returns>消息狀態</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);
            // 準備請求...  
            try
            {
                // 設置參數  
                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();
                //發送請求並獲取相應迴應數據  
                response = request.GetResponse() as HttpWebResponse;
                //直到request.GetResponse()程序纔開始向目標網頁發送Post請求  
                instream = response.GetResponseStream();
                sr = new StreamReader(instream, encoding);
                //返回結果網頁（html）代碼  
                string content = sr.ReadToEnd();
                string err = string.Empty;
                return content;
            }
            catch (Exception ex)
            {
                string err = ex.Message;
                return err;
            }
        }
        #endregion

    }

View Code

封裝的JsonHelpers類以下

 #region 通用

        /// <summary>檢查字符串是否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>檢查字符串是否json格式數組</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 ，刪除左右二邊的[]</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">類型</typeparam>
        /// <param name="jText">json字符串</param>
        /// <returns>類型數據</returns>
        public static T ToObject<T>(string jText)
        {
            return (T)JsonConvert.DeserializeObject(jText, typeof(T));
        }

        #endregion