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成功的走出第一步后，我们紧接着趁热打铁开始下一步：
成为了开发者之后微信平台会给您AppId和AppSecret，在订阅号中是没有的，所以因该申请一下服务号，
若没有请注意上一篇http://www.cnblogs.com/QLJ1314/p/3837952.html 成为开发者
有了ACCESSTOKEN才能做添加菜单，上传/下载图片等功能
所以这次还要借用一下大哥的代码了，上代码：
原文出处： http://blog.csdn.net/hemeng1980/article/details/19502455
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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; } } |
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原文地址：http://www.cnblogs.com/klsw/p/4790197.html
