.net 微信模板消息DEMO 已测试好用

    /// <summary>
    /// 发送模板消息
    /// </summary>
    /// <param name="accessToken">AccessToken</param>
    /// <param name="data">发送的模板数据</param>
    /// <returns></returns>
    public static string SendTemplateMsg(string accessToken, string data)
    {
        string url = string.Format("https://api.weixin.qq.com/cgi-bin/message/template/send?access_token={0}", accessToken);
        HttpWebRequest hwr = WebRequest.Create(url) as HttpWebRequest;
        hwr.Method = "POST";
        hwr.ContentType = "application/x-www-form-urlencoded";
        byte[] payload;
        payload = System.Text.Encoding.UTF8.GetBytes(data); //通过UTF-8编码
        hwr.ContentLength = payload.Length;
        Stream writer = hwr.GetRequestStream();
        writer.Write(payload, 0, payload.Length);
        writer.Close();
        var result = hwr.GetResponse() as HttpWebResponse; //此句是获得上面URl返回的数据
        string strMsg = WebResponseGet(result);
        return strMsg;
    }

    public static string WebResponseGet(HttpWebResponse webResponse)
    {
        StreamReader responseReader = null;
        string responseData = "";
        try
        {
            responseReader = new StreamReader(webResponse.GetResponseStream());
            responseData = responseReader.ReadToEnd();
        }
        catch
        {
            throw;
        }
        finally
        {
            webResponse.GetResponseStream().Close();
            responseReader.Close();
            responseReader = null;
        }
        return responseData;
    }

    public string testSendTemplateMsg()
    {

        //Dictionary<string, string> oDictionary = new Dictionary<string, string>();
        //oDictionary.Add("touser", "oCbVgt5S-LwIzolY0eOlewEWZ3Yo");
        //oDictionary.Add("template_id", "a11BWcVHomXI-GNdC_kUGkn7Z_HwukuQM3cuPt-3wik");
        //oDictionary.Add("url", "http://weixin.qq.com/download");

        //Dictionary<string, string> ofirst = new Dictionary<string, string>();
        //ofirst
        //oDictionary.Add("data", "http://weixin.qq.com/download");

        string json = "{\"touser\":\"oCbVgt5S-LwIzolY0eOlewEWZ3Yo\",\"template_id\":\"a11BWcVHomXI-GNdC_kUGkn7Z_HwukuQM3cuPt-3wik\",\"url\":\"http://weixin.qq.com/download\",\"data\":{\"first\":{\"value\":\"故障提醒\",\"color\":\"#173177\"},\"performance\":{\"value\":\"CPU故障存在电压不稳\",\"color\":\"#173177\"},\"time\":{\"value\":\"2020-10-01 00:00:00\",\"color\":\"#173177\"},\"remark\":{\"value\":\"\",\"color\":\"#173177\"}}}";
       
        return SendTemplateMsg(Access_token(), json);
    }

public string Access_token()
{

        BLL.BLLEAccess_toen oBLLEAccess_toen = new BLL.BLLEAccess_toen();

        E_Access_toen oE_Access_toen = new E_Access_toen();
        oE_Access_toen = oBLLEAccess_toen.GetList<E_Access_toen>(u => u.ID != 0).OrderByDescending(u => u.ID).FirstOrDefault();
        if (oE_Access_toen != null)
        {
            DateTime t1 = DateTime.Parse(oE_Access_toen.Access_tokenTime.ToString());
            DateTime t2 = DateTime.Parse(DateTime.Now.ToString());
            System.TimeSpan t3 = t2 - t1;  //两个时间相减 。默认得到的是 两个时间之间的天数   得到：365.00:00:00 

            double getSeconds = t3.TotalSeconds; //将这个天数转换成秒数, 返回值是double类型的
            if (getSeconds > 7000)
            {
                //重新获得
                string urlstr = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appId + "&secret=" + appSecret;
                string Jsonstr = PostToHttpService(urlstr, "");
                JObject outputObj1 = JObject.Parse(Jsonstr);//将json转为数组


                E_Access_toen ooE_Access_toen = new E_Access_toen();
                ooE_Access_toen.Access_token = outputObj1["access_token"].ToString();
                ooE_Access_toen.Access_tokenTime = DateTime.Now;
                ooE_Access_toen.Guid = UtilsHelper.NewGuid();
                oBLLEAccess_toen.Add(ooE_Access_toen);
                return outputObj1["access_token"].ToString();
            }
            else
            {
                return oE_Access_toen.Access_token;
            }
        }
        else
        {
            //重新获得
            string urlstr = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appId + "&secret=" + appSecret;
            string Jsonstr = PostToHttpService(urlstr, "");
            JObject outputObj1 = JObject.Parse(Jsonstr);//将json转为数组


            E_Access_toen ooE_Access_toen = new E_Access_toen();
            ooE_Access_toen.Access_token = outputObj1["access_token"].ToString();
            ooE_Access_toen.Access_tokenTime = DateTime.Now;
            ooE_Access_toen.Guid = UtilsHelper.NewGuid();
            oBLLEAccess_toen.Add(ooE_Access_toen);
            return outputObj1["access_token"].ToString();

        }


    }

本文地址：https://blog.csdn.net/weixin_43044132/article/details/109245863