public class HomeController : Controller{private  const  string appID = "wx158da7aeb0f4ecc9";//
       private  const string appsecret = "9b9ff146f68cd9530c62ccbbb15b397d";//
       private const string redirect_uri = "http://192.168.21.49/Home/CallBack";//回调地址private const string AccessTokenUrl = "https://open.weixin.qq.com/connect/oauth2/authorize";//授权地址private const string GetInfoUrl = "https://api.weixin.qq.com/sns/oauth2/access_token";//获取微信信息/// <summary>/// 首页/// </summary>/// <returns></returns>public ActionResult Index(){string url = string.Format("{0}?appid={1}&redirect_uri={2}&response_type=code&scope=snsapi_userinfo&state=1#wechat_redirect", AccessTokenUrl, appID, redirect_uri);ViewBag.url = url;return View();}/// <summary>/// 授权回调地址/// </summary>/// <param name="code"></param>/// <returns></returns>public ActionResult CallBack(string code){IDictionary<string, string> dic = new Dictionary<string, string>();dic.Add("appid", appID);dic.Add("secret", appsecret);dic.Add("code", code);dic.Add("grant_type", "authorization_code");var tokenJson = new Top.Api.Util.WebUtils().DoPost(GetInfoUrl, dic);ViewBag.Callback = tokenJson;return View();}}

@{ViewBag.Title = "Index";
}
<meta name="viewport" content="width=device-width,initial-scale=1 user-scalable=0" /><a href="@ViewBag.url"><h1>去授权</h1></a>

@{ViewBag.Title = "CallBack";
}
<meta name="viewport" content="width=device-width,initial-scale=1 user-scalable=0" />
<h2>@ViewBag.Callback</h2>