/// <summary> /// 根据当前日期 判断Access_Token 是否超期 如果超期返回新的Access_Token 否则返回之前的Access_Token /// </summary> /// <param name="datetime"></param> /// <returns></returns> public string IsExistAccess_Token() { string Token = string.Empty; DateTime YouXRQ; // 读取XML文件中的数据,并显示出来 ,注意文件路径 string filepath = System.Web.HttpContext.Current.Server.MapPath("/XMLWXACCESS.xml"); StreamReader str = new StreamReader(filepath, System.Text.Encoding.UTF8); XmlDocument xml = new XmlDocument(); xml.Load(str); str.Close(); //str.Dispose(); Token = xml.SelectSingleNode("xml").SelectSingleNode("Access_Token").InnerText; YouXRQ = Convert.ToDateTime(xml.SelectSingleNode("xml").SelectSingleNode("Access_YouXRQ").InnerText); if (DateTime.Now > YouXRQ) { DateTime _youxrq = DateTime.Now; Access_token mode = GetAccess_token(); if (mode.access_token != null && mode.expires_in != null) { xml.SelectSingleNode("xml").SelectSingleNode("Access_Token").InnerText = mode.access_token; //_youxrq = _youxrq.AddSeconds(int.Parse(mode.expires_in)); _youxrq = _youxrq.AddSeconds(300); xml.SelectSingleNode("xml").SelectSingleNode("Access_YouXRQ").InnerText = _youxrq.ToString(); xml.Save(filepath); Token = mode.access_token; } } return(Token); //string _access_token = IsExistAccess_Token(); }
public Access_token GetAccess_token() { string aid = Utils.GetAppSetting("WeiXinAppid"); string secret = Utils.GetAppSetting("WeiXinCode"); string strUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + aid + "&secret=" + secret; Access_token mode = new Access_token(); HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(strUrl); req.Method = "GET"; using (WebResponse wr = req.GetResponse()) { HttpWebResponse myResponse = (HttpWebResponse)req.GetResponse(); StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8); string content = reader.ReadToEnd(); //Response.Write(content); //在这里对Access_token 赋值 Access_token token = new Access_token(); token = JsonHelper.JsonToObject <Access_token>(content); mode.access_token = token.access_token; mode.expires_in = token.expires_in; } return(mode); }