公众号第三方平台开发 component_verify_ticket和accessToken的获取

公众号第三方平台审核通过之后，微信的服务器会定时（10分钟一次）给"授权事件接收URL"发送component_verify_ticket，这里我们需要及时更新component_verify_ticket

就是下面这个链接

下面这里是我的处理函数

  private void ResponseRequest()
    {
        //WXBizMsgCrypt 这个类是腾讯提供的，下载地址是http://mp.weixin.qq.com/wiki/static/assets/a5a22f38cb60228cb32ab61d9e4c414b.zip
        //这里的构造函数我自己改写了，腾讯提供的构造函数需要提供三个参数的，具体请看微信提供的示例代码
        WXBizMsgCrypt wxcpt = new WXBizMsgCrypt();

        string sReqMsgSig = Request["msg_signature"];
        string sReqTimeStamp = Request["timestamp"];
        string sReqNonce = Request["nonce"];
        string sReqData = GetPost();

        LogTool.LogToDirDest(filePath, LogType.Debug, string.Format("{1} 接收到的信息:{0}", sReqData, pageUrl));

        string sMsg = "";  //解析之后的明文
        int ret = 0;
        ret = wxcpt.DecryptMsg(sReqMsgSig, sReqTimeStamp, sReqNonce, sReqData, ref sMsg);
        if (ret != 0)
        {
            LogTool.LogToDirDest(filePath, LogType.Error, string.Format("{1} 解析出错:{0}", ret, pageUrl));

        }
        else
        {
            LogTool.LogToDirDest(filePath, LogType.Debug, string.Format("{1} 解析后的内容:{0}", sMsg, pageUrl));

            var xDoc = XDocument.Parse(sMsg);

            List<XElement> q = (from c in xDoc.Elements() select c).ToList();

            var infoType = q.Elements("InfoType").First().Value;

            switch (infoType)
            {
                case "component_verify_ticket":
                    //q.Elements("ComponentVerifyTicket").First()
                    //这里就是component_verify_ticket的值，保存起来就可以了,处理完成后在页面上输出success,通知微信服务器已经接收到ticket
                    Response.Write("success");
                    Response.End();
                    break;
                case "unauthorized":
                    //当用户取消授权的时候，微信服务器也会向这个页面发送信息，在这里做一下记录
                    LogTool.LogToDirDest(filePath, LogType.Debug, string.Format("{1} {0} 已取消授权", q.Elements("AuthorizerAppid").First().Value, pageUrl));
                    Response.End();
                    break;
                default:
                    break;
            }
        }
    }

补充一下我的GetPost()函数

 public string GetPost()
    {
        try
        {
            System.IO.Stream s = Request.InputStream;
            int count = 0;
            byte[] buffer = new byte[s.Length];
            StringBuilder builder = new StringBuilder();
            while ((count = s.Read(buffer, 0, buffer.Length)) > 0)
            {
                builder.Append(Request.ContentEncoding.GetString(buffer, 0, count));
            }
            s.Flush();
            s.Close();
            s.Dispose();
            return builder.ToString();
        }
        catch (Exception ex)
        { throw ex; }
    }

利用上面获得的component_verify_ticket作为参数，向微信服务器发送请求即可接收到第三方平台的accessToken

        /// <summary>
        /// 获取第三方平台access_token
        /// </summary>
        /// <param name="component_appid"></param>
        /// <param name="component_appsecret"></param>
        /// <param name="component_verify_ticket"></param>
        /// <returns></returns>
        public static ResponseComponentToken Component_token(string component_verify_ticket)
        {
            var urlFormat = "https://api.weixin.qq.com/cgi-bin/component/api_component_token";
            object data = null;
            data = new
            {
                component_appid = Config.ServerAppID,
                component_appsecret = Config.ServerAppSecret,
                component_verify_ticket = component_verify_ticket
            };
            return CommonJsonSend.Send<ResponseComponentToken>("", urlFormat, data, timeOut: Config.TIME_OUT);
        }

如果请求成功，返回的json结果示例如下：

{
"component_access_token":"61W3mEpU66027wgNZ_MhGHNQDHnFATkDa9-2llqrMBjUwxRSNPbVsMmyD-yq8wZETSoE5NQgecigDrSHkPtIYA", 
"expires_in":7200
}

自己转换一下即可