/// <summary>/// 生成二维码/// </summary>/// <returns></returns>/// 申请生成二维码的用户 CreatQrCodeUserpublic string CreateQrCodeImage(string CreatQrCodeUser){string WeixinQrCodePath = ConfigurationManager.AppSettings["WeixinQrCodePath"].TryToString(); //配置的文件地址string rootpath = System.AppDomain.CurrentDomain.BaseDirectory;//程序运行地址string path = rootpath + WeixinQrCodePath; //文件夹绝对路径string filename = Guid.NewGuid().TryString() + ".jpg";string absolutelyPath = path + "/" +filename; //生成的二维码绝对路径string returnPath = "";//文件返回的路径if (!Directory.Exists(path)){Directory.CreateDirectory(path);}int Sceneid = WeixinDA.GetQrcodeImgMaxSceneid(CreatQrCodeUser);//保存二维码生成的图片WeixinQrCode.SaveQrCodeImage(Sceneid.TryString(), absolutelyPath);//最终生成二维码string ResultCodeImg = path + "/" + filename; //最终合成图片的绝对路径returnPath = WeixinQrCodePath + "/" + filename;//最终合成图片的相对路径WeixinDA.SaveUserQrcodeImg(CreatQrCodeUser, Sceneid, returnPath);return returnPath;}

/// <summary>
/// 获取二维码图片Url,需要Format 0.ticket
/// </summary>
public const string WeiXin_QrCode_GetUrl = "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket={0}";

 /// <summary>/// 根据Ticket获取二维码图片保存在本地/// </summary>/// <param name="scene_id">二维码场景id</param>/// <param name="imgPath">图片存储路径</param>public static void SaveQrCodeImage(string scene_id, string imgPath){try{string Ticket = WeiXinCommom.CreateTicket(scene_id);if (Ticket == null)throw new ArgumentNullException("Ticket");//ticket需 urlEncodestring stUrl = string.Format(WeiXinCommom.WeiXin_QrCode_GetUrl, HttpUtility.UrlEncode(Ticket));WeiXinCommom.SaveUrlImage(stUrl, imgPath);}catch (Exception ex){LogHelper.WriteFileLog("qrcodeError", ex.Message);}}public const string WeiXin_Ticket_CreateUrl = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token={0}";public const string QrCodeTicket_Create_TempJsonStrin = "{\"expire_seconds\": 604800, \"action_name\": \"QR_SCENE\", \"action_info\": {\"scene\": {\"scene_id\": {0}}}}";/// <summary>/// 获取Ticket/// </summary>/// <returns></returns>public static string CreateTicket(string scene_id){string access_token = WeiXinCommom.GetAccsss_token(); ;if (string.IsNullOrEmpty(access_token))throw new ArgumentNullException("Access_Token");string url = string.Format(WeiXin_Ticket_CreateUrl, access_token);string postData = QrCodeTicket_Create_TempJsonStrin.Replace("{0}", scene_id);string result = PostData(url, postData);WeixinQrCode.Ticket ticket = JsonConvert.DeserializeObject<WeixinQrCode.Ticket>(result);if (ticket == null || string.IsNullOrEmpty(ticket.ticket)){FileLog.AddLog("ticket", "获取二维码ticket失败");return "";}return ticket.ticket;}/// <summary>/// Post数据/// </summary>/// <param name="posturl"></param>/// <param name="postData"></param>/// <returns></returns>public static string PostData(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){LogHelper.WriteFileLog("PostDataerror", string.Format("{0}", ex.Message));return string.Empty;}}