微信公共服务平台开发（.Net 的实现）2

成为了开发者之后微信平台会给您appid和secret，，在订阅号中是没有的，所以因该申请一下服务号

有了ACCESSTOKEN才能做添加菜单，上传/下载图片等功能

private string GetToken(){// 也可以这样写://return GetPage("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=你的appid&secret=你的secret", "");string res = "";HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=你的appid&secret=你的secret"); 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();List<ACCESSTOKEN> myACCESSTOKEN = Json.JSONStringToList<ACCESSTOKEN>(content);res = myACCESSTOKEN[0].access_token;}return 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;}}

不必在乎目的地，在乎的是沿途的风景以及看风景的心情，让心灵去旅行！

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