实例介绍
【实例简介】
【实例截图】
【核心代码】
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Net; using System.IO; using System.Text; using System.Xml; public partial class SendMessage : System.Web.UI.Page { string MyOpenID; string MyContent; protected void Page_Load(object sender, EventArgs e) { MyOpenID = "oV93gjl5slD3p29yS1dOijy-pqZ8"; MyContent = "这是一个客服消息"; UserName.Text = MyOpenID; Content.Text = MyContent; } protected void Button1_Click(object sender, EventArgs e) { string res = ""; string Access_Token = IsExistAccess_Token(); string posturl = "https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=" Access_Token; string postData = "{\"touser\":\"" UserName.Text "\",\"msgtype\":\"text\",\"text\":{\"content\":\"" Content.Text "\"}}"; res = GetPage(posturl, postData); Response.Write(res); } public 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; Response.Write(err); return string.Empty; } } /// <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 static 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 = HttpContext.Current.Server.MapPath("XMLFile.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(); 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; } return Token; } public static Access_token GetAccess_token() { string appid = "XXXXXXXXXXX"; string secret = "XXXXXXXXXXXX"; string strUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" appid "&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.ParseFromJson<Access_token>(content); mode.access_token = token.access_token; mode.expires_in = token.expires_in; } return mode; } }
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