微信开发 消息推送实现代码

 //定义数据模型 public class Access_token { public Access_token() { // // TODO: 在此处添加构造函数逻辑 // } string _access_token; string _expires_in; /// /// 获取到的凭证 /// public string access_token { get { return _access_token; } set { _access_token = value; } } /// /// 凭证有效时间，单位：秒 /// public string expires_in { get { return _expires_in; } set { _expires_in = value; } } }

 public ActionResult index(string returnUrl) { GetAccess_token()； IsExistAccess_Token()； return View(); } public static Access_token GetAccess_token() { string AppUrl = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?"; string AppID = "应用组的CorpID";//在设置-》权限管理-》系统管理组 string AppSecret = "应用组的Secret";//在设置-》权限管理-》系统管理组 WebClient webClient = new WebClient(); Byte[] bytes = webClient.DownloadData(string.Format("{0}corpid={1}&corpsecret={2}", AppUrl, AppID, AppSecret)); string result = Encoding.GetEncoding("utf-8").GetString(bytes); JObject jObj = JObject.Parse(result); string token = jObj["access_token"].ToString(); string expires_in = jObj["expires_in"].ToString(); Access_token mode = new Access_token(); mode.access_token = token; mode.expires_in = expires_in; return mode; } /// 

 public static string IsExistAccess_Token() { string Token = string.Empty; DateTime YouXRQ; string strPath = "../../weixin/XMLFile.xml"; // 读取XML文件中的数据，并显示出来 //string filepath = System.Web.Hosting.HostingEnvironment.MapPath(strPath); string filepath = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, strPath); 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(); xml.SelectSingleNode("xml").SelectSingleNode("Access_Token").InnerText = mode.access_token; _youxrq = _youxrq.AddSeconds(int.Parse(mode.expires_in)); xml.SelectSingleNode("xml").SelectSingleNode("Access_YouXRQ").InnerText = _youxrq.ToString(); xml.Save(filepath); Token = mode.access_token; } object text = new { toparty = "1", agentid = "2", msgtype = "text", text = new { content = "项目名称："+来保网+"" } }; string wcr= btnSend(Token, text); return wcr; } public static string btnSend(string Token, object text) { string url = "https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=" + Token; WebRequest req = WebRequest.Create(url); JavaScriptSerializer aa = new JavaScriptSerializer(); string postData = aa.Serialize(text); byte[] requestBytes = Encoding.UTF8.GetBytes(postData); req.Method = "POST"; req.ContentType = "application/x-www-form-urlencoded"; req.ContentLength = requestBytes.Length; Stream requestStream = req.GetRequestStream(); requestStream.Write(requestBytes, 0, requestBytes.Length); requestStream.Close(); HttpWebResponse res = (HttpWebResponse)req.GetResponse(); StreamReader sr = new StreamReader(res.GetResponseStream(), Encoding.Default); string backstr = sr.ReadToEnd(); sr.Close(); res.Close(); WeChatReturn WCR = aa.Deserialize(backstr); return WCR.errmsg; }