public const string appId = "";//申请的微信给的appIdpublic const string appSecret = "";//申请的微信给的appsecretpublic const string redirecturl = "";//申请的微信的回调地址#region 微信登陆/// <summary>/// 微信授权页面/// </summary>/// <returns></returns>public virtual IActionResult WechatAuthorize(){var url = $"https://open.weixin.qq.com/connect/qrconnect?appid={appId}&redirect_uri={redirecturl}&response_type=code&scope=snsapi_login&state=STATE#wechat_redirect";return new RedirectResult(url);}/// <summary>/// 微信回调方法/// </summary>/// <returns></returns>public virtual IActionResult WechatLogin(){var code = Request.Query["code"];var dis = GetAuthorityWechatAccessToken(code);if (!dis.ContainsKey("openid") || !dis.ContainsKey("access_token"))return null;var userinfo = GetWechatUserInfo(dis["access_token"], dis["openid"]);return null;}/// <summary>/// 微信比QQ在获取Token的时候返回了OpenId和UnionId。/// </summary>/// <param name="code"></param>/// <returns></returns>public virtual Dictionary<string,string> GetAuthorityWechatAccessToken(string code){if (string.IsNullOrEmpty(code))return null;var url =string.Format("https://api.weixin.qq.com/sns/oauth2/access_token?appid={0}&secret={1}&code={2}&grant_type=authorization_code",appId, appSecret, code);HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;var json = WebRequestHelper.GetResponse(request, "utf-8");if (string.IsNullOrEmpty(json))return null;if (!json.Contains("access_token")){return null;}var dis = json.DeserializeJson<Dictionary<string, string>>();return dis;}/// <summary>/// 获取微信用户信息/// </summary>/// <param name="token"></param>/// <param name="openid"></param>/// <returns></returns>public virtual  Dictionary<string,object>GetWechatUserInfo(string token,string openid){var url = $"https://api.weixin.qq.com/sns/userinfo?access_token={token}&openid={openid}";HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;var json = WebRequestHelper.GetResponse(request, "utf-8");var dis = json.DeserializeJson<Dictionary<string, object>>();if (dis == null || dis.ContainsKey("errcode"))return null;return dis;}#endregion

//请求接口方法
public static string GetResponse(WebRequest request, string encoding){using (WebResponse response = request.GetResponse()){var stream = response.GetResponseStream();if (stream == null) return null;using (var reader = new StreamReader(stream, Encoding.GetEncoding(encoding))){return reader.ReadToEnd();}}}